Bio-based and biodegradable elastomer for cosmetic and personal care
AssigneeGrant Industries, Inc.
InventorsAnna K. CROOM, Ronald V. LERUM, John GORMLEY
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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.
Claims30
A cross-linked polyurethane elastomer rubber composition, comprising
- (a) a cross-linked polyurethane elastomer rubber;
- (b) a cosmetic emollient;
- and
- (c) a urethanation catalyst,
- wherein the cosmetic emollient forms a solvent matrix substantially surrounds the cross-linked polyurethane elastomer rubber.
A process for preparing a cross-linked polyurethane elastomer rubber composition, comprising:
- reacting a polyisocyanate with a prepolymer having at least two free hydroxyl groups in the presence of a urethanation catalyst and a cosmetic emollient under conditions sufficient to form a cross-linked polyurethane rubber.
Dependencies are inferred from the claim text.