Method of foaming a polymer composition using zeolite and foamed articles so made
US6538050B1 · kind B1 · utility
5Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Nov 1, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2327/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a method of foaming a polymer comprising the steps of providing a composition comprising said polymer and a zeolite in an amount of 0.3% or more based on the weight of said polymer and extruding said composition. The invention further relates to foamed articles and to the use of zeolites as foaming agents in the foaming of polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.