Flame-retardant resin composition containing a bromostyrene prepolymer
US5223594A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1990 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | Nov 28, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S260/24
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A flame-retardant resin composition contains a prepolymer represented by the general formula: ##STR1## wherein R.sub.1 stands for a hydrogen atom or an unreactive saturated group; R.sub.2 stands for a reactive unsaturated group; m and n each stand for a positive number of 1 to 4 and X and Y are each a copolymerization ratio and are in the range of 0.3 to 0.7 with the proviso that the sum total of X and Y is 1, as an essential component. The flame retardant resin composition is curable with uniform crosslinking density and without substantial stress concentration and is suitable for producing a laminate for a multilayer printed wiring board having a high thermal impact resistance as well as excellent heat resistance and
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.