Molded polyurethane plastics, a process for their production and their use as shoe soles
US5112874A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1989 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Aug 24, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S528/906
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is directed to optionally cellular, molded polyurethane plastics having a solid surface and characterized by a content of about 0.1 to 8.0% by weight, based on the weight of the polyurethane plastic, of a polysiloxane which is chemically incorporated into the polyurethane structure. The present invention is also directed to a process for the production of these molded plastics by reacting in closed molds a reaction mixture containing PA0 a) a polyisocyanate component, PA0 b) a component containing at least one organic compound having at least two isocyanate-reactive groups and a molecular weight of 400 to about 20,000 and PA0 c) optionally a compound having at least two isocyanate-reactive groups and a molecular weight of 18 to 399, wherein a portion of component b) and/or c) contains at least one polysiloxane containing at least two isocyanate-reactive groups in an amount of about 0.1 to 8.0% by weight, based on the weight of the polyurethane plastic. Finally, the present invention is directed to the use of these polyurethane plastics shoe soles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.