Polyphotoinitiators

Details Polyphotoinitiators Polyphotoinitiators

1983-08-31

1986-05-06

Lieberman, Allan M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522 35, 522136, 522144, 522148, 522149, 522904, 525105, 525479, C08F 246, C08L 5108

Patent

active

045872767

ABSTRACT:
Novel polymeric photocleavable photoinitiators are prepared by the hydrosilation reaction of an organosilicon hydride grafting agent which has a photoinitiating aromatic-aliphatic ketone derivative of at least one organo group, with a polymer having a plurality of unsaturated olefinic or acetylenic sites in the presence of a hydrosilation catalyst. Preferred polymers are butadiene or alkyl substituted butadiene polymers and copolymers and vinyl functional polyorganosiloxanes. The grafting agents have the formula (hv)--R.sup.8 --R.sup.5 --H wherein (hv) is a photoinitiating aromatic-aliphatic ketone group, R.sup.8 is selected from alkylene, alkenylene, alkylenoxy and oxy groups, and R.sup.5 is selected from ##STR1## the R.sup.6 groups are the same or different organo or halo groups and n is an integer.

REFERENCES:
patent: 4273907 (1981-06-01), Takamizawa et al.
patent: 4391963 (1983-07-01), Shirahata
patent: 4477326 (1984-10-01), Lin
Chemical Abstracts 97: 23997x, 1982.

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