2(2-hydroxyphenyl)2H-benzotriazole compounds and homopolymers or copolymers thereof
US5099027A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1988 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Sep 15, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3475
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Polymerizable ethylenically unsaturated monomers comprising the reaction product of a 1,2-epoxy group-containing polymerizable ethylenically unsaturated monomer and a 2(2-hydroxyphenyl)2H-benzotriazole compound of the structure: ##STR1## where X is=to H, OR and NR.sub.2 where R=alkyl; Z'=H and C.sub.2 H.sub.4 OH; Z and Y=H when Z'=C.sub.2 H.sub.4 OH; when Z'=H, Y and Z=OH or Y=H and Z.times.OH are disclosed. The monomers are useful in preparing free radical initiated addition polymers. Polymers can also be prepared by first preparing a free radical initiated addition polymer derived from a 1,2-epoxy group-containing polymerizable ethylenically unsaturated monomer and subsequently reacting the polymer with the benzotriazole compound. Both types of polymer contain permanent polymer-bound ultraviolet light stabilizers and are useful as binders for exterior coatings, as resins for the manufacture of optical lenses, and as components for sunscreens and suntanning lotions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.