Foam composition comprising oil, thermoplastic elastomer and expandable particles
US6451865B1 · kind B1 · utility
11Cited by
20References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2000 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Feb 14, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2203/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A foam and pre-foam production process, and a foam and a pre-foam is described. The process comprises the steps of: forming a pre-foam composition comprising oil(s), thermoplastic elastomer(s) and heat expandable thermoplastic particles encapsulating heat expandable gas or liquified gas, the said particles being present in an amount which provides the required foam cell density. A heat treating step for the said composition to cause the particles to expand and produce a foam from the said composition is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.