Thermoplastic-elastomer composite product, such as a pipe for conveying coolant in an air conditioning circuit, for example
US6068026A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 22, 1998 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Jan 22, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L2011/047
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A thermoplastic and elastomer composite product, in particular a pipe for conveying coolant fluid in a motor vehicle air conditioning circuit, the product comprising an inside layer made of a mixture of a polyamide 6 and at least one modifying agent such as a grafted poly(1,2-vinylbutadiene), a polyoctene, a brominated isobutylene-p-methylstyrene, a silane, or an ethylene and acrylic acid copolymer, and a layer of an elastomer such as a brominated butyl rubber modified by a grafted poly(1,2-vinylbutadiene), a silane, an ethylene and acrylic acid copolymer, or a copolymer of ethylene and of propylene grafted with maleic anhydride, there being total adhesion between the thermoplastic and the elastomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.