Photocurable compositions

Details Photocurable compositions Photocurable compositions

1979-07-05

1981-08-18

Briggs, Sr., Wilbert J.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415916, 20415918, 20415919, 20415923, 20415924, 260 459R, C08F 400, C08F 250

Patent

active

042844851

ABSTRACT:
The use of photo-initiators of the formula I or II ##STR1## in which n is 1 or 2, Ar is a monovalent or divalent aromatic radical, X is a tertiary amino group, a hydroxyl or ether group or a siloxy group, R.sup.1 and R.sup.2 are alkyl, substituted alkyl, alkenyl, cycloalkyl or phenylalkyl or together are alkylene or oxa- or aza-alkylene and R.sup.3 is a direct bond or a divalent aliphatic, cycloaliphatic or aromatic radical, in combination with light stabilizers from the category of the polyalkylpiperidine derivatives in the photopolymerization of ethylenically unsaturated compounds results in polymers with high stability to light and low yellowing.

REFERENCES:
patent: 3639321 (1972-02-01), Krefeld et al.
patent: 3982942 (1976-09-01), Lu
patent: 4048034 (1977-09-01), Martan
patent: 4089762 (1978-05-01), Fordsham
patent: 4139520 (1979-02-01), Ramey et al.
patent: 4169167 (1979-09-01), McDowell
patent: 4201642 (1980-05-01), Nowak

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