Polymeric stabilizers having low polydispersity
US6583245B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2001 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Jun 21, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F246/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a polymerizable composition, comprising a) at least one compound of formula (I)(RG)—A—(Stab)  (I),wherein(Stab) is a light stabilizer radical selected from the group consisting of sterically hindered amines, hydroxyphenyl-s-triazines, hydroxyphenyl-benzotriazols and o-hydroxy-benzophenones; A is a spacer group or a direct bond; and(RG) is a group containing at least one ethylenically unsaturated functional group; and either b1) a compound of formula (II)Y—X  (II), whereinX represents a group having at least one carbon atom and is such that the free radical derived from X is capable of initiating polymerization andY represents a group being such that the free radical Y· derived from it forms a stable free radical; or b2) a stable free radical Y· and a free radical source from which a radical is formed capable of initiating polymerization, or b3) a compound of formula (III)  and a catalytically effective amount of an oxidizable transition metal complex catalyst, whereinp represents a number greater than zero and defines the number of initiator fragments;q represents a number greater t…
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