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US 6,495,643 B1Granted
Polymerizable monomers and polymers
AssigneeCommonwealth Scientific and Industrial Research Organization
InventorsRichard Alexander Evans, Ezio Rizzardo, Graeme Moad
Life of this patent
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Abstract
The invention relates to compounds of the formulae: processes for their preparation, polymers, co-polymers or block co-polymers containing them or their use as monomers or co-monomers in free radical polymerization and in the manufacture of adhesives, dental composites or optical lenses.
Claims10
A polymer or co-polymer which is derived from at least one monomer of the formulae:
- wherein:
- R1 to R4 may be the same or different and are selected from hydrogen, halogen, optionally substituted alkyl, optionally substituted aryl, nitrile, hydroxy, alkoxy, acyloxy and ester;
- or
- R1 and R2 or R3 and R4 together form methylene;
- X is selected from sulfur, sulfoxide, sulfone and disulfide;
- Y is selected from sulfur, SO2, oxygen, N—H, N-alkyl, N-aryl, acyl and CR5R6 wherein R5 and
- R6 are the same as R1 to R4;
- and
- Z1 and Z2 are linking functionalities.
6 more elements
Dependencies are inferred from the claim text.