Tertiary amide-terminated polyamides in structured personal care compositions
US6503522B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2001 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Jun 27, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/52
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A structured, solid composition that contains at least one colorant, a liquid oil phase, and a gellant, wherein the gellant is a tertiary amide-terminated polyamide resin (ATPA) of the formula (1): wherein, n designates a number of repeating units such that terminal amide groups constitute from 10% to 50% of the total amide groups; R1 at each occurrence is independently selected from a C1-22 hydrocarbon group; R2 at each occurrence is independently selected from a C2-42 hydrocarbon group; R3 at each occurrence is independently selected from an organic group containing at least two carbon atoms in addition to hydrogen atoms, and optionally containing one or more oxygen and nitrogen atoms; and R3a at each occurrence is independently selected from hydrogen, C1-10 alkyl and a direct bond to R3 or another R3a such that the N atom to which R3 and R3a are both bonded is part of a heterocyclic structure defined in part by R3a—N—R3, the composition being in the form of a solid; the liquid oil phase and the ATPA resin forming a physiologically acceptable medium. The composition may be formulated into a cosmetic or other personal care product, for instance, a black mascara, eye li…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.