Hair spray containing carboxylated polyurethane resins
US6106808A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1996 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Sep 20, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/594
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A hair spray composition comprising: PA1 (a) about 0.25% to about 6% by weight of a carboxylated polyurethane resin; PA1 (b) 0% to about 6% by weight of a second hair fixative resin; PA1 (c) 0% to about 80% by weight of an alcohol; and PA1 (d) about 15% to about 99% by weight water, PA1 wherein the carboxylated polyurethane resin has a weight average molecular weight of about 10,000 to about 25,000, and is a reaction product of a mixture comprising: PA2 (i) about 10% to about 90% by weight of the mixture of a polyoxyalkylene diol having a number average molecular weight of about 400 to about 20,000; PA2 (ii) about 0.01% to about 20% by weight of the mixture of an alkylene glycol; PA2 (iii) about 3% to about 80% by weight of the mixture of an organic diisocyanate; PA2 (iv) about 0.1% to about 12% by weight of the mixture of a 2,2-di(hydroxymethyl)-alkanoic acid; and PA2 (v) about 0.1% to about 0.5% by weight of the mixture of water, PA2 wherein a ratio of isocyanate groups to hydroxyl groups is about 0.55 to about 0.75 is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.