Radiation-hardenable agent for the scratch-resistant coating of

Details Radiation-hardenable agent for the scratch-resistant coating of Radiation-hardenable agent for the scratch-resistant coating of

1988-06-07

1990-05-01

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...

528 32, 528 33, 528901, C08G 7720, C08G 7740, C08F28312

Patent

active

049218816

ABSTRACT:
A radiation-hardenable agent for the scratch-resistant coating of organic glasses consists of a cocondensate of vinyl trimethoxysilane or vinyl triethoxysilane and tetramethoxysilane or tetraethoxysilane, a reactive diluent which comprises at least 2 vinyl, acrylic or methacrylic groups per molecule and, if necessary, of a known photoinitiator. The agent can be prepared by forming the cocondensate in the presence of an amount of water which is at least equivalent to the methoxy or ethoxy groups present or in the presence of a small amount of a carboxylic acid, removing all volatile portions of the reaction mixture and mixing the oily siloxane remaining as residue with the other components.

REFERENCES:
patent: 4332844 (1982-06-01), Hamada et al.
patent: 4387240 (1982-06-01), Berg
patent: 4444973 (1984-04-01), Schonfelder et al.
patent: 4454295 (1984-06-01), Wittmann et al.
patent: 4626556 (1986-12-01), Nozue et al.

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