Composite element comprising a top layer and a base layer of thermoplastic polyurethanes, its preparation, and its use
US5288549A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1992 |
| Grant date | Feb 22, 1994 |
| Priority date | — |
| Expiry date | Mar 9, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31554
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A composite element which comprises an elastic, cellular top layer (A) and a rigid base layer (B) of thermoplastic polyurethanes, the polyurethane elastomer (B) of the base layer being prepared by reacting PA1 Ba) 1 mol of at least one essentially linear, relatively high-molecular-weight polyesterol or polyetherol, PA1 Bb) from 6 to 15 mol of an organic diisocyanate, preferably 4,4'-diphenylmethane diisocyanate, and PA1 Bc) from 5 to 14 mol of at least one alkanediol or dialkylene glycol, in the presence of PA1 Bd) from 0.05 to 0.3% by weight, based on the total weight of (Ba) to (Bc), of water, and, if desired, PA1 Be) a catalyst, and PA1 Bf) assistants and/or additives, is used as a cushioned fitting for vehicles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.