Variable color transparent lip balm and preparation method thereof

Abstract

The present invention provides a variable color transparent lip balm, consisting of following components by weight percent: 4.0 to 5.0% by weight of dibutyl lauroyl glutamide, 2.0 to 3.0% by weight of polyamide-3, 15.0 to 20.0% by weight of bis-stearyl ethylenediamine/neopentyl glycol/stearyl hydrogenated dimer dilinoleate copolymer, 46.65 to 49.60% by weight of C12-15 alkyl benzoate, 1.0 to 3.0% by weight of heptyl undecylenate, 9.0 to 11.0% by weight of C10-30 cholesterol/lanosterol esters, 10.0 to 15.0% by weight of hydrogenated C6-20 polyolefin, 1.5 to 2.5% by weight of dextrin isostearate, 0.05 to 0.1% by weight of eosin yellowish and 0 to 0.8% by weight of excipient. The transparent lip balm of the present invention has good transparency, and excellent variable color effect.

Claims

1. A variable color transparent lip balm, consisting of the following components by weight percent: 4.0% to 5.0% by weight of dibutyl lauroyl glutamide, 2.0% to 3.0% by weight of polyamide-3, 15.0% to 20.0% by weight of bis-stearyl ethylenediamine/neopentyl glycol/stearyl hydrogenated dimer dilinoleate copolymer, 46.65% to 49.60% by weight of C12-15 alkyl benzoate, 1.0% to 3.0% by weight of heptyl undecylenate, 9.0% to 11.0% by weight of C10-30 cholesterol/lanosterol esters, 10.0% to 15.0% by weight of hydrogenated C6-20 polyolefin, 1.5% to 2.5% by weight of dextrin isostearate, 0.05% to 0.1% by weight of eosin yellowish, and 0 to 0.8% by weight of excipient; wherein the sum of weight percent of all above components is 100%.

2. The variable color transparent lip balm of claim 1, wherein the excipient is an anti-oxidant, activator, preservative, aromatic or mixture thereof, which is allowed to be used on lips according to regulatory requirements.

3. The variable color transparent lip balm of claim 1, consisting of the following components by weight percent: 4.5% to 5.0% by weight of dibutyl lauroyl glutamide, 2.5% to 3.0% by weight of polyamide-3, 17.5% to 20.0% by weight of bis-stearyl ethylenediamine/neopentyl glycol/stearyl hydrogenated dimer dilinoleate copolymer, 48.13% to 49.60% by weight of C12-15 alkyl benzoate, 1.0% to 2.0% by weight of heptyl undecylenate, 9.0% to 10.0% by weight of C10-30 cholesterol/lanosterol esters, 10.0% to 12.5% by weight of hydrogenated C6-20 polyolefin, 1.5% to 2.0% by weight of dextrin isostearate, 0.07% to 0.1% by weight of eosin yellowish, and 0.8% by weight of excipient; wherein the sum of weight percent of all above components is 100%.

4. The variable color transparent lip balm of claim 3, wherein the excipient is an anti-oxidant, activator, preservative, aromatic or mixture thereof, which is allowed to be used on lips according to regulatory requirements.

5. The variable color transparent lip balm of claim 1, consisting of the following components by weight percent: 5.0% by weight of dibutyl lauroyl glutamide, 3.0% by weight of polyamide-3, 20.0% by weight of bis-stearyl ethylenediamine/neopentyl glycol/stearyl hydrogenated dimer dilinoleate copolymer, 49.60% by weight of C12-15 alkyl benzoate, 1.0% by weight of heptyl undecylenate, 9.0% by weight of C10-30 cholesterol/lanosterol esters, 10.0% by weight of hydrogenated C6-20 polyolefin, 1.5% by weight of dextrin isostearate, 0.1% by weight of eosin yellowish, and 0.8% by weight of excipient.

6. The variable color transparent lip balm of claim 5, wherein the excipient is an anti-oxidant, activator, preservative, aromatic or mixture thereof, which is allowed to be used on lips according to regulatory requirements.

7. A method for preparing the variable color transparent lip balm of claim 1, comprising the steps of: (1) stirring and mixing dibutyl lauroyl glutamide, polyamide-3, bis-stearyl ethylenediamine/neopentyl glycol/stearyl hydrogenated dimer dilinoleate copolymer, C12-15 alkyl benzoate, heptyl undecylenate, C10-30 cholesterol/lanosterol esters, hydrogenated C6-20 polyolefinand dextrin isostearate thoroughly, then heating the ingredients to 130-140° C., until all are completely melted and transparent; (2) stirring and adding eosin yellowish and excipient to the mixture of step (1) thoroughly at a temperature of 100° C., whereby a completely dissolved mixture is obtained; and (3) cooling the mixture obtained by step (2) to 95-100° C., injecting the mixture into a mould and demoulding the mixture when it has cooled to 4-12° C.

Description

DETAILED DESCRIPTION OF THE INVENTION

(1) The invention is further illustrated by the following examples without limiting the scope of the invention to these particular embodiments.

(2) All components are taken according to following weight percents, and all following components are commercially available.

(3) TABLE-US-00001 Group Component Example 1 Example 2 Example 3 A phase Dibutyl lauroyl glutamide 4.00 4.50 5.00 Polyamide -3 2.00 2.50 3.00 Bis-stearyl 15.00 17.50 20.00 ethylenediamine/neopentyl glycol/stearyl hydrogenated dimer dilinoleate copolymer(polyamide-8) C12-15 alkyl benzoate 46.65 48.13 49.60 Heptyl undecylenate 3.00 2.00 1.00 Hydrogenated C6-20 15.00 12.50 10.00 polyolefin Dextrin isostearate 2.50 2.00 1.50 C10-30 11.00 10.00 9.00 cholesterol/lanosterol esters B phase Eosin yellowish 0.05 0.07 0.10 Tocopheryl acetate 0.20 0.20 0.20 Bisabolol 0.50 0.50 0.50 Propyl hydroxybenzoate 0.10 0.10 0.10 Total 100.00 100.00 100.00

(4) Lip balm of each example described above is prepared respectively by steps of:

(5) 1. stirring and mixing raw materials of A phase thoroughly, then heating them to 130˜140, until they are completely melted and transparent;

(6) 2. adding and stirring materials of B phase into A phase thoroughly at a temperature of 100, whereby a completely dissolved mixture is obtained; and

(7) 3. cooling the mixture obtained by step 2 to 95˜100° C., then injecting it into a mould, after that demoulding is performed when it is cooled to 4˜12° C., then a variable color transparent lip balm is obtained.

(8) Testing and using effects of the lip balms obtained in Examples 1˜3 are shown in following table:

(9) TABLE-US-00002 Variable color effect Melting Breaking (Marked according point strength (g) to sensorial (Celsius Diameter of lip performance Trans- Test item degree) balm is 12.7 mm in actual use) parency Example 1 71 520 4.9 Good Example 2 74 570 5.0 Good Example 3 76 600 5.0 Good

(10) 1. Melting point, tested by the melting point determination method described in appendix VIC of Chinese Pharmacopeia, 2010 edition.

(11) 2. Breaking strength, tested by lip balm fracture apparatus. Generally, for lip balm with a diameter of 12.7 mm, its breaking strength will be in the range of 400-800 g, so as to ensure it won't be fractured in use.

(12) 3. Variable color effect, marked by sensorial and visual assessment in actual use. 5 scores means excellent, 4 scores means good, 3 scores means average, 2 scores means poor, and 1 score means very poor. data from 20 subjects are recorded, and an average value is taken.

(13) 4. Transparency, tested by visual assessment.

(14) According to the testing results shown in the above table, it can be seen that the lip balms of Examples 1 to 3 of the present invention behave excellently not only on good transparency but also on variable color effect, and they have suitable hardness and reliable melting point range, producing a high-value application.