Process for the production of molded products using internal mold release agents
US4868224A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1988 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Oct 21, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/098
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is directed to a process for producing a molded product comprising PA1 (A) reacting: PA2 (i) an organic polyisocyanate having an isocyanate group content of from 5 to 45% by weight, preferably from 15 to 35% by weight, and most preferably from 20 to 35% by weight, prepared by reacting: PA3 (a) an organic di- and/or polyisocyanate, and PA3 (b) an active hydrogen containing fatty acid ester prepared by reacting an alcohol or polyol with an aliphatic, saturated or unsaturated fatty acid, said ester being characterized in that at least one aliphatic acid which contains more than 8 carbon atoms is built into the molecule, said ester further characterized as having an acid number of from 0 to 100 and a hydroxyl number of from 0 to 150 with at least one of said numbers being greater than zero, said ester having an average molecular weight of from 500 to 5000, PA2 (ii) an isocyanate reactive component comprising: PA3 (a) from about 0.5 to about 10% by weight based on the weight of components (ii)(b) and (ii)(c), of a zinc carboxylate containing from 8 to 24 carbon atoms per carboxylate group, PA3 (b) from about 0.3 to 100% by weight, preferably from 0.5 to 95% by weig…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.