Talc-based external mold release agent for polyurethane foams
US4131662A · kind A · utility
22Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1978 |
| Grant date | Dec 26, 1978 |
| Priority date | — |
| Expiry date | Jan 3, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/77
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The instant invention is directed to novel mold release agents for polyurethane resins and to the use thereof, particularly in the closed mold forming of polyurethane foams. The mold release agents disclosed herein are applied to the surface of the mold prior to molding and broadly comprise talc dispersed in an emulsion of water and an organic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.