Ethylene-vinyl alcohol copolymers, moldings and laminates
US5134036A · kind A · utility
7Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 1991 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | May 9, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Ethylene-vinyl alcohol copolymers wherein ethylene content is 10-70 mol % diad syndiotacticity is not less than 55 mol %, and intrinsic viscosity [.eta.] is not less than 0.05 l/g when measured with a mixed solvent of 85 weight % of phenol and 15 weight % of water at 30 20 C., which show less decrease of resistance to gas permeation under high temperature and high humidity, while retaining resistance to get permeation under low humidity, transparency and melt moldability, and moldings and laminates formed thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.