IP Library › Granted Patent US 12,337,057
Granted Patent B2
US 12,337,057 · App. 18/066,105 · Granted Jun 24, 2025

Bio-based and biodegradable elastomer for cosmetic and personal care

Inventors: Anna K. Croom (Brooklyn, NY); Ronald V. Lerum (Leonia, NJ); John Gormley (Midland Park, NJ)
Assignee: GRANT INDUSTRIES, INC
A61K8/87A61K8/042A61Q17/04A61Q19/008A61K2800/10A61K2800/54
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Quick Facts
Patent No.
US 12,337,057
App. No.
18/066,105
Granted
Jun 24, 2025
Kind
B2
Abstract

A polyurethane elastomeric rubber composition containing a bio-based polyol cross-linked with a bio-based isocyanate using a urethanation catalyst such as a bismuth catalyst in the presence of a cosmetic emollient is disclosed. The cross-linked polyurethane elastomer rubber is in further aspect of the invention included in a gel after being milled in the presence of a bio-based emollient or mixture of bio-based emollients. The polyurethane elastomeric gel has good compatibility with cosmetic and natural oils and can be used as a gelling agent for these oils among other desirable cosmetic formulary roles.

Claims (17)

1. A cross-linked elastomer comprising a reaction product of a polyester and a multi-functional crosslinker, wherein the polyester is an esterified dilinoleic acid or a branched C 36 dicarboxylic acid/diol copolymer.

2. The cross-linked elastomer of claim 1 , wherein the multi-functional crosslinker is polyisocyanate.

3. The cross-linked elastomer of claim 1 , wherein the diol is propanediol or butanediol.

4. The cross-linked elastomer of claim 1 , where in the polyester is greater than 60% by weight of the total weight of the cross-linked elastomer.

5. The cross-linked elastomer of claim 1 , where in the polyester is greater than 75% by weight of the total weight of the cross-linked elastomer.

6. The cross-linked elastomer of claim 1 , wherein the cross-linked elastomer is silicone-free.

7. The cross-linked elastomer of claim 1 , wherein the branched C 36 dicarboxylic acid/diol copolymer is dilinoleic acid/propanediol copolymer or dilinoleic acid/butanediol copolymer.

8. A cosmetic and personal care composition comprising the cross-linked elastomer of claim 1 and a carrier fluid.

9. The cosmetic and personal care composition of claim 8 , further comprising a water phase and an oil phase.

10. The cosmetic and personal care composition of claim 8 , wherein the composition further comprises an active selected from the group consisting of selected from vitamins, sunscreens, plant extracts, fragrances and mixtures thereof.

11. The cosmetic and personal care composition of claim 8 , further comprising fragrances, colorants, preservatives, or mixtures thereof.

12. The cosmetic and personal care composition of claim 8 , wherein the composition is a foundation, a lotion, a cream, a shampoo, a serum, or a lip care formulation.

13. A gel composition comprising the cross-linked elastomer of claim 1 dispersed in a carrier fluid.

14. The gel composition of claim 13 , the cross-linked elastomer is in micronized form.

15. The gel composition of claim 14 , wherein the cross-linked elastomer in micronized form has a particle size from 1 to 100 microns.

16. The gel composition of claim 15 , wherein the particle size is less than 60 microns.

17. The gel composition of claim 13 , wherein the gel has a viscosity ranging from 15,000 cP to 1,000,000 cP.

Continuity (4)
Division 16992831 · Aug 13, 2020
Provisional Application 62976015 · Feb 13, 2020
Provisional Application 62893968 · Aug 30, 2019
Related Publication 20230122072A1 · Apr 20, 2023
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