Blowing agent based on HFC-134a and cyclopentane for the expansion of polymers
US6624208B2 · kind B2 · utility
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5References
13Claims
0Family size
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Key dates
| Filing date | Feb 1, 2002 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Mar 8, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2203/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Composition that can be used as a polymer blowing agent, comprising from 60 to 98% of HFC-134a and from 2 to 40% of cyclopentane;polymeric composition comprising it, andprocess for manufacturing an expanded polymer using it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.