Method of molding polyurethane articles in a mold coated with three mold release agents
US3935291A · kind A · utility
17Cited by
9References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 28, 1973 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | Aug 28, 1993 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/32
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of molding polyurethane articles using three mold release agents, the first being a halocarbon film, the second a hydrocarbon release agent and the third a polyvinyl alcohol release agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.