Making cross-linked styrene polymer foam
US4454086A · kind A · utility
22Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1982 |
| Grant date | Jun 12, 1984 |
| Priority date | — |
| Expiry date | Jun 18, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/83
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
High quality plastic foam and the like expanded products and articles are made by incorporating a blowing agent in an acid-containing alkenyl aromatic polymer, such as a copolymer of styrene and acrylic acid; extruding while cross-linking the polymer with a polyfunctional cross-linking agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.