Hose for automobile cooling system
US6592957B2 · kind B2 · utility
1Cited by
3References
20Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 30, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Apr 18, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31746
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to a multi-layer hose for automobile cooling systems which comprises at least two layers of inner layer and outer layer wherein:(1) the material for inner layer is a composition which contains a polymer containing a carboxyl group and/or its derivative group in the molecule and a dynamically crosslinked olefin thermoplastic elastomer, the content of the polymer containing a carboxyl group and/or its derivative group thereof in the molecule being 5-50% by weight based on the total weight of the composition and(2) the material for outer layer comprises a polyamide thermoplastic resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.