Laminated composite of a rigid polyurethane modified polyisocyanurate substrate and metal, plastic, cellulose, glass, ceramic or combinations thereof
US4886700A · kind A · utility
11Cited by
5References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 24, 1987 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Aug 24, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2992
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Laminated composites including method for the preparation thereof comprising forming in combination in a mold at least one layer of a rigid polyurethane modified polyisocyanurate by reacting in said mold, a reaction mixture of an organic di- or polyisocyanate, a cyclic alkylene carbonate and a polyether polyol in the presence of a soluble adduct amine-carbonate catalyst, and at least one layer of material selected from metal, plastic, cellulose, glass and ceramic or combinations thereof. The electrically conductive "metal clad" laminates are especially useful as printed circuit boards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.