Phosphorus-containing flameproofing agents for epoxy resin materials
US5506313A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1994 |
| Grant date | Apr 9, 1996 |
| Priority date | — |
| Expiry date | Sep 7, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/0326
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to compounds of the formula (1) ##STR1## in which m is 0 or 1, R is a hydrogen atom or a group of formula ##STR2## T is either an (m+2)-valent aromatic group or a bisphenylene group, [Z] is a group of on average 1 to 10 structural units of the formula (3) EQU --Q--T(OR).sub.1+m-r (EB).sub.r (3), in which Q is a group of the formula (4) ##STR3## in which R.sup.0 is a phenyl radical substituted in a particular manner and R.sup.1 and R.sup.2 are C.sub.1 -C.sub.4 alkyl, and in which, furthermore, EB symbolizes a free valency of the group T, r has one of the values 0, 1 or 1+m and the structural units of the formula (3) are linked via their free valencies to the group [Z] such that the groups Q in each case alternate with groups T and the group [Z] overall is monovalent. As excellent flameproofing agents which are reactive towards epoxy compounds, the compounds are a useful formulation component for epoxy resin compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.