Expandable polyolefin compositions and polyolefin foam preparation process
US4347329A · kind A · utility
35Cited by
8References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 1980 |
| Grant date | Aug 31, 1982 |
| Priority date | — |
| Expiry date | May 29, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/91
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The use, in an otherwise conventional polyolefin extrusion foaming process, of a stability control agent (e.g., stearamide, EAA copolymer, etc.) in conjunction with certain mixed blowing agent systems (e.g., 5-50 weight percent trichloromonofluoromethane and 50-95 weight percent dichlorodifluoromethane) provides closed-cell olefin polymer foam articles having increased maximum achievable cross-sections and good dimensional stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.