Internal mold release agents, their use for preparing molded articles using polyisocyanate-addition polymerization, and a process for preparing molded articles
US4764537A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1987 |
| Grant date | Aug 16, 1988 |
| Priority date | — |
| Expiry date | Sep 15, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are internal mold release agents for the preparation of molded articles using polyisocyanate addition polymerization, which are comprised of: PA1 (A) at least one ketimine, aldimine, enamine, cyclic Schiff base or a mixture of at least two of said compounds; PA1 (B) at least one metal salt of an organic carboxylic acid having from 8 to 24 carbon atoms; and PA1 (C) optionally including at least one carboxylic acid, organic sulphonic acid, mineral acid, or amidosulphonic acid, and their use in preparing molded articles comprised of polyurethane-plastics, polyurea-plastics, polyurethane-polyurea-plastics, polyurethane-polyurea-polyamide-plastics, or polyurea-polyamide-plastics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.