Transparent Solid Glue and Manufacturing Method Thereof

Abstract

A transparent solid glue, in mass percentage comprises: 10.0%-50.0% of glycerol, 5.0%-20.0% of propylene glycol, 5.0%-30.0% of sticky substance, 1.0%-10.0% of stearic acid, 0-5.0% of vegetable oil, 0.5%-5.0% of protopine, 0.1%-5.0 of excipient, 0.1%-0.5% of preservative, and 5.0%-70.0% of deionized water, wherein the excipient is C.sub.12-16 saturated or unsaturated fatty acid salt. The prepared transparent solid glue has high initial viscosity; and the drying time is controllable so that the gluing position of the objects to be glued can be adjusted according to actual requirements, which is convenient to use, and the glue exhibits strong adhesion after completely drying. Meanwhile, the addition of protopine causes the pH of the solid glue to be between 10.49-10.99, and accordingly the solid glue is an environmentally friendly solid glue. Within a temperature range from −5° C. to 40° C., this solid glue is widely applicable to gluing paper, wood pieces, photographic paper, paperboards and etc.

Claims

1. A transparent solid glue, in mass percentage comprising: glycerol 10.0%-50.0%, propylene glycol 5.0%-20.0%, sticky substance 5.0%-30.0%, stearic acid 1.0%-10.0%, vegetable oil 0-5.0%, protopine 0.5%-5.0%, excipient 0.1%-5.0%, preservative 0.1%-0.5%, and deionized water 5.0%-70.0%, wherein the excipient is C.sub.12-16 saturated or unsaturated fatty acid salt.

2. The transparent solid glue of claim 1, wherein the excipient is at least one of sodium laurate, sodium myrastate, or sodium oleate.

3. The transparent solid glue of claim 2, wherein the excipient is sodium laurate.

4. The transparent solid glue of claim 1, wherein the vegetable oil is at least one of castor oil, palm-kernel oil, coconut oil, or corn oil.

5. The transparent solid glue of claim 4, wherein the vegetable oil is castor oil.

6. The transparent solid glue of claim 1, wherein the sticky substance is polyvinylpyrrolidone.

7. The transparent solid glue of claim 1, wherein the preservative is B20.

8. A method of making the transparent solid glue of claim 1, the method comprising: (1) adding a prescribed amount of deionized water in accordance with the prescribed ratio into a reaction vessel, then adding glycerol and propylene glycol in accordance with the prescribed ratio while stirring, and mixing until even; (2) adding sticky substance to the reaction vessel while stirring, stirring for 60-90 min, and soaking for a period of time until the sticky substance is completely dissolved to form a mixed solution in the reaction vessel; (3) feeding steam into the mixed solution while stirring until the temperature of the mixed solution rises to 60-80° C., adding vegetable oil and stearic acid while stirring, stirring for 5-10 min to generate higher fatty acids, then adding pre-prepared protopine solution, and stirring until even; (4) continuing heating so that the temperature of the mixed solution rises to 80-90° C., and continuing heating for 30-35 min; (5) adding the excipient into the mixed solution at 80-90° C., stirring until even, and continuing heating for 10-15 min; (6) keeping the temperature of the mixed solution at 80-90° C., adding the preservative, and stirring for 8-12 min; and (7) keeping the temperature of the mixed solution at 80-90° C., keeping still for 8-10 hr to defoam until the mixed solution becomes a bubble-free semi-transparent liquid, and then discharging the liquid to fill packaging.

Description

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0036] To enable a further understanding of the innovative and technological content of the invention herein refer to the detailed description of the invention and the accompanying embodiments below:

Embodiment 1

[0037] In this embodiment, a transparent solid glue in mass percentage comprises: 10.0% of glycerol, 5.0% of propylene glycol, 5.0% of PVP (purchased from U.S. ISP, similarly hereinafter), 10.0% of stearic acid, 5.0% of protopine, 5.0% of sodium laurate (purchased from Shanghai Sinopharm, similarly hereinafter), 0.5% of preservative (B20, purchased from Thor Specialty Chemical (Shanghai) Co., Ltd., similarly hereinafter), and 59.5% of deionized water.

[0038] A method of making the transparent solid glue of this embodiment, comprises:

[0039] (1) adding a prescribed amount of deionized water in accordance with the prescribed ratio into a reaction vessel, then adding glycerol and propylene glycol in accordance with the prescribed ratio while stirring, and mixing until even;

[0040] (2) adding PVP to the reaction vessel while stirring, stirring for 60 min, and soaking for a period of time until the PVP is completely dissolved to form a mixed solution in the reaction vessel;

[0041] (3) feeding steam into the mixed solution while stirring until the temperature of the mixed solution rises to 80° C., adding stearic acid while stirring, stirring for 5 min to generate higher fatty acids, then adding pre-prepared protopine solution, and stirring until even;

[0042] (4) continuing heating so that the temperature of the mixed solution rises to 80° C., and continuing heating for 30 min;

[0043] (5) adding the sodium laurate into the mixed solution at 80° C., stirring until even, and continuing heating for 10 min;

[0044] (6) keeping the temperature of the mixed solution at 90° C., adding the preservative, and stirring for 8 min; and

[0045] (7) keeping the temperature of the mixed solution at 80° C., keeping still for 10 hr to defoam until the mixed solution becomes a bubble-free semi-transparent liquid, and then discharging the liquid to fill packaging.

Embodiment 2

[0046] In this embodiment, a transparent solid glue in mass percentage comprises: 50.0% of glycerol, 20.0% of propylene glycol, 5.0% of PVP, 1.0% of stearic acid, 0.1% of castor oil, 4.0% of protopine, 0.1% of sodium laurate, 0.5% of preservative (B20), and 19.3% of deionized water.

[0047] A method of making the transparent solid glue of this embodiment, comprises:

[0048] (1) adding a prescribed amount of deionized water in accordance with the prescribed ratio into a reaction vessel, then adding glycerol and propylene glycol in accordance with the prescribed ratio while stirring, and mixing until even;

[0049] (2) adding PVP to the reaction vessel while stirring, stirring for 90 min, and soaking for a period of time until the PVP is completely dissolved to form a mixed solution in the reaction vessel;

[0050] (3) feeding steam into the mixed solution while stirring until the temperature of the mixed solution rises to 60° C., adding castor oil and stearic acid while stirring, stirring for 10 min to generate higher fatty acids, then adding pre-prepared protopine solution, and stirring until even;

[0051] (4) continuing heating so that the temperature of the mixed solution rises to 90° C., and continuing heating for 35 min;

[0052] (5) adding the excipient into the mixed solution at 90° C., stirring until even, and continuing heating for 15 min;

[0053] (6) keeping the temperature of the mixed solution at 80° C., adding the preservative, and stirring for 12 min; and

[0054] (7) keeping the temperature of the mixed solution at 90° C., keeping still for 8 hr to defoam until the mixed solution becomes a bubble-free semi-transparent liquid, and then discharging the liquid to fill packaging.

Embodiment 3

[0055] In this embodiment, a transparent solid glue in mass percentage comprises: 20.0% of glycerol, 10.0% of propylene glycol, 10.0% of PVP, 2.0% of stearic acid, 0.5% of castor oil, 1.0% of protopine, 0.5% of sodium laurate, 0.1% of preservative (B20), and 55.9% of deionized water.

[0056] A method of making the transparent solid glue of this embodiment, comprises:

[0057] (1) adding a prescribed amount of deionized water in accordance with the prescribed ratio into a reaction vessel, then adding glycerol and propylene glycol in accordance with the prescribed ratio while stirring, and mixing until even;

[0058] (2) adding PVP to the reaction vessel while stirring, stirring for 65 min, and soaking for a period of time until the PVP is completely dissolved to form a mixed solution in the reaction vessel;

[0059] (3) feeding steam into the mixed solution while stirring until the temperature of the mixed solution rises to 65° C., adding castor oil and stearic acid while stirring, stirring for 7 min to generate higher fatty acids, then adding pre-prepared protopine solution, and stirring until even;

[0060] (4) continuing heating so that the temperature of the mixed solution rises to 85° C., and continuing heating for 32 min;

[0061] (5) adding the sodium laurate into the mixed solution at 85° C., stirring until even, and continuing heating for 12 min;

[0062] (6) keeping the temperature of the mixed solution at 85° C., adding the preservative, and stirring for 10 min; and

[0063] (7) keeping the temperature of the mixed solution at 85° C., keeping still for 8.5 hr to defoam until the mixed solution becomes a bubble-free semi-transparent liquid, and then discharging the liquid to fill packaging.

Embodiment 4

[0064] In this embodiment, a transparent solid glue in mass percentage comprises: 10.0% of glycerol, 5.0% of propylene glycol, 5.0% of PVP, 5.8% of stearic acid, 1.0% of castor oil, 2.0% of protopine, 1.0% of sodium laurate, 0.2% of preservative (B20), and 70% of deionized water.

[0065] A method of making the transparent solid glue of this embodiment, comprises:

[0066] (1) adding a prescribed amount of deionized water in accordance with the prescribed ratio into a reaction vessel, then adding glycerol and propylene glycol in accordance with the prescribed ratio while stirring, and mixing until even;

[0067] (2) adding PVP to the reaction vessel while stirring, stirring for 70 min, and soaking for a period of time until the PVP is completely dissolved to form a mixed solution in the reaction vessel;

[0068] (3) feeding steam into the mixed solution while stirring until the temperature of the mixed solution rises to 70° C., adding castor oil and stearic acid while stirring, stirring for 7 min to generate higher fatty acids, then adding pre-prepared protopine solution, and stirring until even;

[0069] (4) continuing heating so that the temperature of the mixed solution rises to 87° C., and continuing heating for 34 min;

[0070] (5) adding the sodium laurate into the mixed solution at 87° C., stirring until even, and continuing heating for 13 min;

[0071] (6) keeping the temperature of the mixed solution at 87° C., adding the preservative, and stirring for 11 min; and

[0072] (7) keeping the temperature of the mixed solution at 87° C., keeping still for 9.5 hr to defoam until the mixed solution becomes a bubble-free semi-transparent liquid, and then discharging the liquid to fill packaging.

Embodiment 5

[0073] In this embodiment, a transparent solid glue in mass percentage comprises: 50.0% of glycerol, 20.0% of propylene glycol, 12.7% of PVP, 5.0% of stearic acid, 2.0% of castor oil, 3.0% of protopine, 2.0% of sodium laurate, 0.3% of preservative (B20), and 5.0% of deionized water.

[0074] A method of making the transparent solid glue of this embodiment, comprises:

[0075] (1) adding a prescribed amount of deionized water in accordance with the prescribed ratio into a reaction vessel, then adding glycerol and propylene glycol in accordance with the prescribed ratio while stirring, and mixing until even;

[0076] (2) adding PVP to the reaction vessel while stirring, stirring for 90 min, and soaking for a period of time until the PVP is completely dissolved to form a mixed solution in the reaction vessel;

[0077] (3) feeding steam into the mixed solution while stirring until the temperature of the mixed solution rises to 70° C., adding castor oil and stearic acid while stirring, stirring for 10 min to generate higher fatty acids, then adding pre-prepared protopine solution, and stirring until even;

[0078] (4) continuing heating so that the temperature of the mixed solution rises to 90° C., and continuing heating for 35 min;

[0079] (5) adding the sodium laurate into the mixed solution at 85° C., stirring until even, and continuing heating for 12 min;

[0080] (6) keeping the temperature of the mixed solution at 80° C., adding the preservative, and stirring for 12 min; and

[0081] (7) keeping the temperature of the mixed solution at 85° C., keeping still for 9 hr to defoam until the mixed solution becomes a bubble-free semi-transparent liquid, and then discharging the liquid to fill packaging.

Embodiment 6

[0082] In this embodiment, a transparent solid glue in mass percentage comprises: 30.0% of glycerol, 15.0% of propylene glycol, 20.0% of PVP, 6.0% of stearic acid, 3.0% of castor oil, 0.5% of protopine, 3.0% of sodium laurate, 0.1% of preservative (B20), and 22.4% of deionized water.

[0083] A method of making the transparent solid glue of this embodiment, comprises:

[0084] (1) adding a prescribed amount of deionized water in accordance with the prescribed ratio into a reaction vessel, then adding glycerol and propylene glycol in accordance with the prescribed ratio while stirring, and mixing until even;

[0085] (2) adding PVP to the reaction vessel while stirring, stirring for 80 min, and soaking for a period of time until the PVP is completely dissolved to form a mixed solution in the reaction vessel;

[0086] (3) feeding steam into the mixed solution while stirring until the temperature of the mixed solution rises to 70° C., adding stearic acid and castor oil while stirring, stirring for 8 min to generate higher fatty acids, then adding pre-prepared protopine solution, and stirring until even;

[0087] (4) continuing heating so that the temperature of the mixed solution rises to 85° C., and continuing heating for 35 min;

[0088] (5) adding the sodium laurate into the mixed solution at 85° C., stirring until even, and continuing heating for 15 min;

[0089] (6) keeping the temperature of the mixed solution at 90° C., adding the preservative, and stirring for 12 min; and

[0090] (7) keeping the temperature of the mixed solution at 90° C., keeping still for 9 hr to defoam until the mixed solution becomes a bubble-free semi-transparent liquid, and then discharging the liquid to fill packaging.

Embodiment 7

[0091] Differing from Embodiment 3, In this embodiment, a transparent solid glue in mass percentage comprises: 40.0% of glycerol, 5.0% of propylene glycol, 25.0% of PVP, 5.0% of stearic acid, 4.0% of castor oil, 4.0% of protopine, 4.0% of sodium laurate, 0.4% of preservative (B20), and 12.6% of deionized water.

Embodiment 8

[0092] In this embodiment, a transparent solid glue in mass percentage comprises: 20.0% of glycerol, 10.0% of propylene glycol, 10.0% of PVP, 7.0% of stearic acid, 5.0% of palm-kernel oil, 5.0% of protopine, 2.0% of sodium laurate, 0.4% of preservative (B20), and 40.6% of deionized water.

[0093] A method of making the transparent solid glue of this embodiment, comprises:

[0094] (1) adding a prescribed amount of deionized water in accordance with the prescribed ratio into a reaction vessel, then adding glycerol and propylene glycol in accordance with the prescribed ratio while stirring, and mixing until even;

[0095] (2) adding PVP to the reaction vessel while stirring, stirring for 90 min, and soaking for a period of time until the PVP is completely dissolved to form a mixed solution in the reaction vessel;

[0096] (3) feeding steam into the mixed solution while stirring until the temperature of the mixed solution rises to 60° C., adding palm-kernel oil and stearic acid while stirring, stirring for 10 min to generate higher fatty acids, then adding pre-prepared protopine solution, and stirring until even;

[0097] (4) continuing heating so that the temperature of the mixed solution rises to 90° C., and continuing heating for 35 min;

[0098] (5) adding the sodium laurate into the mixed solution at 90° C., stirring until even, and continuing heating for 15 min;

[0099] (6) keeping the temperature of the mixed solution at 80° C., adding the preservative, and stirring for 12 min; and

[0100] (7) keeping the temperature of the mixed solution at 90° C., keeping still for 8 hr to defoam until the mixed solution becomes a bubble-free semi-transparent liquid, and then discharging the liquid to fill packaging.

Embodiment 9

[0101] In this embodiment, a transparent solid glue in mass percentage comprises: 40.0% of glycerol, 15.0% of propylene glycol, 15.0% of PVP, 5.0% of stearic acid, 3.0% of castor oil, 2.0% of protopine, 3.0% of sodium myrastate (purchased from Shanghai Sinopharm), 0.4% of preservative (B20), and 16.6% of deionized water.

[0102] A method of making the transparent solid glue of this embodiment, comprises:

[0103] (1) adding a prescribed amount of deionized water in accordance with the prescribed ratio into a reaction vessel, then adding glycerol and propylene glycol in accordance with the prescribed ratio while stirring, and mixing until even;

[0104] (2) adding PVP to the reaction vessel while stirring, stirring for 90 min, and soaking for a period of time until the PVP is completely dissolved to form a mixed solution in the reaction vessel;

[0105] (3) feeding steam into the mixed solution while stirring until the temperature of the mixed solution rises to 70° C., adding castor oil and stearic acid while stirring, stirring for 10 min to generate higher fatty acids, then adding pre-prepared protopine solution, and stirring until even;

[0106] (4) continuing heating so that the temperature of the mixed solution rises to 90° C., and continuing heating for 35 min;

[0107] (5) adding the sodium myrastate into the mixed solution at 85° C., stirring until even, and continuing heating for 12 min;

[0108] (6) keeping the temperature of the mixed solution at 80° C., adding the preservative, and stirring for 12 min; and

[0109] (7) keeping the temperature of the mixed solution at 85° C., keeping still for 9 hr to defoam until the mixed solution becomes a bubble-free semi-transparent liquid, and then discharging the liquid to fill packaging.

Embodiment 10

[0110] In this embodiment, a transparent solid glue in mass percentage comprises: 20.0% of glycerol, 10.0% of propylene glycol, 10.0% of PVP, 8.0% of stearic acid, 5.0% of castor oil, 3.0% of protopine, 4.0% of sodium oleate, 0.5% of preservative (B20), and 39.5% of deionized water.

[0111] A method of making the transparent solid glue of this embodiment, comprises:

[0112] (1) adding a prescribed amount of deionized water in accordance with the prescribed ratio into a reaction vessel, then adding glycerol and propylene glycol in accordance with the prescribed ratio while stirring, and mixing until even;

[0113] (2) adding PVP to the reaction vessel while stirring, stirring for 75 min, and soaking for a period of time until the PVP is completely dissolved to form a mixed solution in the reaction vessel;

[0114] (3) feeding steam into the mixed solution while stirring until the temperature of the mixed solution rises to 75° C., adding castor oil and stearic acid while stirring, stirring for 10 min to generate higher fatty acids, then adding pre-prepared protopine solution, and stirring until even;

[0115] (4) continuing heating so that the temperature of the mixed solution rises to 80° C., and continuing heating for 35 min;

[0116] (5) adding the sodium oleate into the mixed solution at 85° C., stirring until even, and continuing heating for 12 min;

[0117] (6) keeping the temperature of the mixed solution at 80° C., adding the preservative, and stirring for 12 min; and

[0118] (7) keeping the temperature of the mixed solution at 85° C., keeping still for 9 hr to defoam until the mixed solution becomes a bubble-free semi-transparent liquid, and then discharging the liquid to fill packaging.

[0119] The solid glues prepared in the foregoing Embodiments 1-10 all conform to the Chinese standard QB/T2857-2007, with solid content: up to 45-60%; pH=10.49-10.99; strength: usually, 60-80 MPA (24 h) for A4 paper, 90-110 MPA for paperboards, and 120-150 MPA for photographic (HP) paper; and applicable ambient temperature: −5-40° C.

[0120] Transparency Tests

[0121] Method: cutting the solid glue into slices (1 mm thick), and measuring the light transmittance of the slices by a spectrophotometer at different wavelengths of (respectively: 450 nm, 750 nm, 980 nm) of incident light.

[0122] Results: the light transmittance of all the solid glues prepared in the Embodiments 1-10 is above 85%, and the light transmittance of the solid glues prepared in the Embodiments 1-8 is greater than that of the solid glues prepared in the Embodiment 9 and Embodiment 10.

[0123] Complete Drying Time Tests

[0124] Method: applying the solid glue onto 80 g A4 paper in a force of 500 g twice at 25° C. and under the humidity of 40-60, and then bonding the two pieces of paper. After a certain period of time, the two pieces of paper are separated. If fiber fracture occurs in the pieces of paper, another test is performed and the waiting time is reduced, and this process is repeated until the shortest time after which fiber fracture occurs is measured. Similarly, if no fiber fracture occurs in the pieces of paper when they are separated after a certain period of time, the waiting time is increased, and this process is repeated until the shortest time at which fiber fracture occurs is measured. Five parallel tests are performed for each solid glue.

[0125] Results: for the solid glue prepared in Embodiment 1, the time after which paper breaks is 10-11 min; for the solid glues prepared in Embodiments 3, 4 and 10, the time after which paper breaks is 11-13 min; for the solid glues prepared in Embodiments 6, 7, 8 and 9, the time after which paper breaks is 12-15 min; and for the solid glues prepared in Embodiments 2 and 5, the time after which paper breaks is 6-10 min. Thus, the complete drying time of the solid glue of the present invention is longer than that of the existing commercially available solid glue. Meanwhile, the complete drying time of the solid glue can be adjusted according to actual requirements.