Method for preparing silicone graft copolymers

Details Method for preparing silicone graft copolymers Method for preparing silicone graft copolymers

1979-05-23

1980-10-21

Briggs, Sr., Wilbert J.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

264 1, 351160H, 525478, 525479, C08L 5108, C08F 246, B29D 1100

Patent

active

042292735

ABSTRACT:
The invention relates to the preparation of graft copolymers from silicones. The method comprises subjecting an article such as a contact lens previously moulded from silicone resins to an UV irradiation step with radiations of wave-length from 1800 to 4000 angstroms, in the presence of oxygen, and in a subsequent step contacting said article with an unsaturated monomer compound at a temperature sufficient to ensure the grafting of said compound on the silicone resin.

REFERENCES:
patent: 3959102 (1976-05-01), Wajs et al.

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