Expanded olefin polymer
US4214054A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1978 |
| Grant date | Jul 22, 1980 |
| Priority date | — |
| Expiry date | Oct 19, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2471/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A thermoplastic synthetic resin such as polyethylene or ethylene-vinyl acetate copolymer resin containing 0.1 to 10 wt. % of a specific additive selected from specific classes of compounds, namely saturated higher fatty acid amides, saturated higher aliphatic amines and complete esters of saturated higher fatty acids is found to be very suitable for production of expanded articles and can be easily formed into expanded articles with little shrinkage after expansion, free from creases on the surface or cracks on the cell walls, and having excellent characteristics such as good closed cellular characteristic, higher compressive strength, low density, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.