Silicone polyphotoinitiators

Details Silicone polyphotoinitiators Silicone polyphotoinitiators

1985-03-28

1987-05-19

Bleutge, John C.

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

Synthetic resins

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

522 35, 522 36, 522 44, 522 99, 522172, 522904, 526279, 528 32, 430281, C08F 250, C08F 3008, C08G 7720, C08G 7740

Patent

active

046669531

ABSTRACT:
Polyorganosiloxanes having an average of more than two siloxane repeat units, at least one of which repeat units includes a photoinitiating group bound to the silicon atom thereof, the photoinitiating group having the formula ##STR1## where R.sup.1 and R.sup.2 are the same or different alkyl groups or R.sup.1 and R.sup.2 are alkylene groups linked to each other so that R.sup.1 and R.sup.2 together with the carbon atom to which both are attached comprise a cycloalkyl group, and R.sup.3 is H or hydrocarbyl.
Compositions of these polyorganosiloxanes and silicones or organic monomers with free radical curable groups are readily cured by irradiation with UV light.

REFERENCES:
patent: 4273907 (1981-06-01), Takamizawa
patent: 4284485 (1981-08-01), Berner
patent: 4308400 (1981-12-01), Felder
patent: 4391963 (1983-07-01), Shirahata
patent: 4467082 (1984-08-01), Shirahata
patent: 4477326 (1984-10-01), Lin
patent: 4507187 (1985-03-01), Jacobine
patent: 4534838 (1985-08-01), Lin et al.
patent: 4536265 (1985-08-01), Fabrizio
Roffey "Photopolymerization of Surface Coatings" 1982, p. 79.

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