ECOLOGICAL EMULSIFIABLE WATER REPELLENT AGENT WITH HIGH SOLID CONTENT COMPATIBLE WITH THERMOSET RESINS

Abstract

The current invention presents an ecological emulsifiable system (nanometric colloidal dispersion), with solid content higher than 90%, ecological, compatible with urea resins using linear and/or branched carbon saturated chains known for their water repellence, compatible with the bonding resins; adherence of plywood and agglomerate wood boards, formaldehyde known as urea resins, specifically urea acting as single binding, with water repellence property without changing the particle adherence provided to plywood or agglomerate wood boards, preserving the dimensional stability of plywood and/or. agglomerate wood board and not affecting the preserving metallic additives/salts by reducing the formaldehyde emission.

Claims

1. An emulsifiable water repellent agent for application on plywood and agglomerate wood boards characterized for including a system of self-emulsifiable nanometric colloidal dispersion, with 100% of linear saturated hydrocarbon based solids.

2. The emulsifiable water repellent agent for application on plywood and agglomerate wood boards according to claim 1, characterized for showing carbon chains defined by its composition between C18 to C42.

3. The emulsifiable water repellent agent for application on plywood and agglomerate wood boards according to claim 2, characterized for concentrating the biggest percentage of carbon chains in range of C34-32.

4. The emulsifiable water repellent agent for application on plywood and agglomerate wood boards according to claim 3, characterized for being hydrocarbons of vegetable and mineral origin.

5. The emulsifiable water repellent agent for application on plywood and agglomerate wood boards according to claim 4, characterized for using surfactant agents based on amine derivatives.

6. The emulsifiable water repellent agent for application on plywood and agglomerate wood boards according to claim 5, characterized for showing total compatibility with the formaldehyde resins, specifically urea formaldehyde.

7. The emulsifiable water repellent agent for application on plywood and agglomerate wood boards according to claim 6, characterized for showing control of emission of free formaldehyde in the formation of emulsion with the self-emulsifiable repellent agent.

8. The emulsifiable water repellent agent for application on plywood and agglomerate wood boards according to claim 7, characterized by a system of nanometric colloidal dispersion consisting of 100% solid repellent agent and urea formaldehyde resin.

9. The emulsifiable water repellent agent for application on plywood and agglomerate wood boards according to claim 3, characterized for presenting the following reactions: ##STR00003##

10. The emulsifiable water repellent agent for application on plywood and agglomerate wood boards according to claim 9, characterized for presenting repellence according to the principles of repellence action of the saturated chains in relation to water.

11. The emulsifiable water repellent agent for application on plywood and agglomerate wood boards according to claim 10, characterized by the bonding and adherence action of the plywood and agglomerate wood boards for following the adherence principles according to the bonding characteristics conceived by the urea formaldehyde resin, in accordance with the trials on the boards which show total compatibility without affecting the adherence.

12. An emulsifiable water repellent agent for application on plywood and agglomerate wood boards, characterized for: (i) including a system of self-emulsifiable nanometric colloidal dispersion, with 100% of linear saturated hydrocarbon based solids; (ii) showing carbon chains defined by its composition between C18 to C42 and concentrating the biggest percentage of carbon chains in range of C34-32; and (iii) presenting the following reactions: ##STR00004##

13. The emulsifiable water repellent agent for application on plywood and agglomerate wood boards according to claim 12, characterized for presenting repellence according to the principles of repellence action of the saturated chains in relation to water.

14. The emulsifiable water repellent agent for application on plywood and agglomerate wood boards according to claim 13, further characterized by the bonding and adherence action of the plywood and agglomerate wood boards for following the adherence principles according to the bonding characteristics conceived by the urea formaldehyde resin, in accordance with the trials on the boards which show total compatibility without affecting the adherence.

15. An emulsifiable water repellent agent for application on plywood and agglomerate wood boards, characterized for: (i) including a system of self-emulsifiable nanometric colloidal dispersion, with 100% of linear saturated hydrocarbon based solids; (ii) showing carbon chains defined by its composition between C18 to C42 and concentrating the biggest percentage of carbon chains in range of C34-32. (iii) presenting the following reactions: ##STR00005## and (iv) presenting repellence according to the principles of repellence action of the saturated chains in relation to water.

16. The emulsifiable water repellent agent for application on plywood and agglomerate wood boards according to claim 15, further characterized by the bonding and adherence action of the plywood and agglomerate wood boards for following the adherence principles according to the bonding characteristics conceived by the urea formaldehyde resin, in accordance with the trials on the boards which show total compatibility without affecting the adherence.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0024] FIG. 1 shows the graphic representation of the carbon distribution; and.

[0025] FIG. 2 shows the graphic representation of the differential scanning calorimetry—DSC.

DESCRIPTION OF INVENTION IN DETAILS

[0026] The present invention acts on the urea formaldehyde resin, agglutination, bonding or adhesive agents between the plywood or agglomerate wood boards.

[0027] The emulsion is based on linear and/or branched saturated hydrocarbon, vegetal origin derivatives including fatty acids from soy, corn, palm leaf, canola, cotton, sunflower, peanut, castor bean, rice and carnauba and/or of animal origin, comprised by triglycerides, nominally known as sebum fatty acids and/or mineral origin, originated from carbon chemistry, whose basic structure is methylene, with defined chemical composition, known as n-paraffin.

[0028] Besides these hydrocarbon chains, those of petrochemical origin have the same activity, obtained from the petroleum refinement, by getting naphtha, which are the sources of raw materials known as primary olefins, in the form of homopolymers, being the most known the ethylene and propylene homopolymers.

[0029] Those of vegetable origin known as vegetable polymers, such as sugar cane wax and the insect waxes are included here, known as beeswax.

[0030] In addition to Montana wax of mineral origin, the polyamide waxes are included as well.

[0031] Waxes then become the structure or main chain (according to the drawing) and thus defined by the composition of its linear saturated hydrocarbon chain, with a chain between C18 and C42.

[0032] The emulsion consists of a system of self-emulsifiable nanometric colloidal dispersion, which means that the system proposed to incorporate the resin is water free, but compatible with its polarity and cured together with urea formaldehyde resin, because of the proper ph which serves as a binding material without damaging the “tack” properties—resin adherence, incorporating the water repellence.

[0033] The urea formaldehyde resins are known and used a lot as wood binding, mainly because of cost factor and adherence factor in the assembly of plywood and agglomerate wood boards, hereinafter called MDF and MDP.

[0034] The present invention works specifically with the urea resin based on urea formaldehyde according to the examples and tests;

[0035] The emulsifiable nanometric colloidal dispersion system enters in reaction and compatibility with the urea formaldehyde resin in temperature range between 60 to 130° C., more precisely between 90 and 110° C., being fundamental that the ph of the emulsifiable nanometric colloidal dispersion system is exactly equal to the ph of resin, as well as the hydrophilic lipophilic balance (HLB) of the emulsifiable nanometric colloidal dispersion system is corrected exactly according to the HLB of the resin.

Wax Chromatography

Wax DSC (FIG. 2)

[0036] Emulsifiable wax testing with resin, pk and ph assembly.
Ideal PH from 7.8 to 8.2
HLB calculated for the emulsifiable wax;
HLB calculated from 10 to 12;
Formula with urea formaldehyde resin at 40/50 and 70% of NV and the different results;

Demonstration of the Emulsifiable Single System—Urea Formaldehyde Resin;

System FTIR—Fourier Transformed

GPC (Gas Chromatography) of the Water-Repellent Additive

Characteristics of the Water Repellent Additive

Gas Chromatography:

[0037]

TABLE-US-00002 QUANTIFICATION % N-Paraffin 76.00 C25-C29 46.00 C30-C34 28.00 C35-C39 7.00 BIGGER THAN C40 3.00

Carbon Distribution (FIG. 1)

[0038] The water repellent additive has a high content of n-paraffin of 60-80%, being its biggest concentration around an average of 30 to 50%, in the carbon range of 025-29. The amount of isoparaffin is in the range of 10-20%, being its concentration mostly in the range of carbon C30 to C49.

Differential Scanning Calorimetry—DSC (FIG. 2)

[0039] The analysis of differential scanning calorimetry in waxes shows the quality assurance of the present invention regarding the mixture standards performed and the product identity, proving the efficiency of the product in the characteristic of the invention.

[0040] The DSC of the water repellent additive shows a crystallization point around 60° C. with a melting point around 65° C.

Tests Performed with Water Repellent Additive on Boards

[0041] The data shown on tables 01 and 02 were obtained at specialized laboratory of a manufacturer of MDF and MDP boards.

[0042] The test is about the application of additive on MDF and MDP boards, in a ratio pre-set by the company, thus analyzing the swelling/absorption of water, on 15 mm and 18 mm boards, with the maximum pattern of 12%.

[0043] The initial additive ratio (dosage) for the 12 mm board was 0.35 and later decreasing to 0.32%; thus in both cases 0.35 and 0.32, the swelling were kept way below 12%, creating in the second dosage a reduction of consumption around 9.5%.

[0044] For the 18 mm boards, the dosage was 0.28; resulting in swelling smaller than 12%.

TABLE-US-00003 TABLE 01 Water Maximum Product repellent ratio Track 1 Track 2 Track 3 Track 4 Track 5 Track 6 Track 7 Average Pattern 15 STDM 0.35 9.06 9.16 8.15 8.15 8.36 8.63 8.97 8.64 12 15 STDM 0.35 11.68 9.27 8.65 9 9.11 9.32 10.24 9.61 12 15 STDM 0.35 8.91 8.33 8.48 9.44 9.42 9.2 9.13 8.99 12 15 STDM 0.35 9.01 9.23 8.98 9.27 8.75 9.31 8.57 9.02 12 15 STDM 0.35 9.58 10.66 10.05 10.45 10.01 10.28 10.24 10.18 12 15 STDM 0.32 9.28 9.86 9.89 9.58 10.34 10.07 9.49 9.79 12 15 STDM 0.32 10.38 12.23 12.28 11.23 10.45 12.28 10.3 11.31 12 15 STDM 0.32 10.33 10.32 10.05 11.97 8.91 11.84 10.2 10.52 12 15 STDM 0.32 9.88 11.11 9.88 9.83 9.74 10.73 10.98 10.31 12 15 STDM 0.32 10.95 12.43 9.93 11.56 10.6 12.79 10.27 11.22 12 15 STDM 0.32 9.52 7.31 10.73 10 8.29 11.29 9.72 9.57 12 15 STDM 0.32 9.58 9.29 7.5 7.62 7.28 7.88 8.35 8.21 12 15 STDM 0.32 7.59 8.32 9.1 7.8 8.04 8.18 9.05 8.3 12

TABLE-US-00004 TABLE 02 Water Maximum Product repellent ratio Track 1 Track 2 Track 3 Track 4 Track 5 Track 6 Track 7 Average Pattern 18 STDM 0.28 6.2 6.6 8.96 6.76 6.32 6.58 7.05 6.64 12 18 STDM 0.28 6.05 7.21 5.74 6.48 6.35 6.58 6.21 6.37 12 18 STDM 0.28 10.22 6.3 6.34 6.94 7.04 6.46 6.35 7.09 12 18 STDM 0.28 6.83 6.63 7.02 7.23 6.49 7.46 7.24 6.99 12 18 STDM 0.28 7.45 6.83 7.28 7.87 6.31 7.09 6.7 7.08 12 18 STDM 0.28 9.04 14.05 15.36 10.75 14.29 8.94 10.19 11.8 12 18 STDM 0.28 6.55 7.26 6.7 7.06 7.06 6.63 7.06 6.9 12 18 STDM 0.28 9.09 9.21 8.97 8.34 8.07 8.71 9 8.77 12 18 STDM 0.28 9.52 9.44 9.35 9.69 9.48 10.06 8.94 9.5 12