Method for using mold release
US3992502A · kind A · utility
11Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1972 |
| Grant date | Nov 16, 1976 |
| Priority date | — |
| Expiry date | Apr 28, 1992 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2010/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A polyurethane reaction mixture mold release comprising 1 to 5 percent by weight of a sodium or potassium soap of a carboxylic acid of 11 to 22 carbons in a diluent of alcohol or water, the mold release being applied to a mold, then addition of a polyurethane reaction mixture to form a shaped polyurethane of the microcellular type, stripping the shaped article from the mold, flushing with water at 40.degree. to 95.degree.C., drying, applying a paint coat of 3 to 10 mils over the polyurethane article to obtain a polyurethane decorative article having a paint coat resistant to peeling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.