Method for making a cellular rubber, cellular rubbers obtained by the method, and cosmetic puffs made of the cellular rubber
US5434194A · kind A · utility
13Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1993 |
| Grant date | Jul 18, 1995 |
| Priority date | — |
| Expiry date | Mar 29, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2400/14
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method for making a cellular rubber is described, in which water is added to a high water absorption resin, followed by allowing the resulting mixture to stand and form a hydrous gel. The hydrous gel, with or without a foaming agent, is added to a rubber compound and subjected to foaming under conditions sufficient for vulcanization thereby obtaining a cellular rubber having a closed cell structure. Cosmetic puffs using the cellular rubber are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.