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US 4,026,705 AGranted
Photocurable compositions and methods
AssigneeGeneral Electric Company
InventorsJames V. Crivello, Siegfried H. Schroeter
Life of this patent
Estimating the term…
Abstract
Epoxy compositions are provided which can be cured with visible radiant energy based on the use of certain organic dyes in combination with diarylhalonium salts. Cationic polymerization of various olefinic and cyclic organic compounds and organosilicon cyclics also can be effected in a similar manner.
Claims13
A visible light curable epoxy resin composition consisting essentially of by weight
- (A) an epoxy resin,
- (B) from 0.1% to 10% of (A) of a photoinitiator consisting essentially of an aryliodonium salt of the formula, ##EQU1## (C) from 0.001% to 3%, based on the weight of (A), of a cationic dye, selected from the class consisting of Acridine orange, Acridine yellow, Phosphine R, Benzoflavin and Setoflavin T,
- where R is a monovalent aromatic organic radical, R.sup.1 is a divalent aromatic organic radical, M is a metal or metalloid and Q is a halogen radical, a is a whole number equal to 0 or 2, b is a whole number equal to 0 or 1, the sum of a + b is equal to 2 or the valence of I,
- c=d- e
- e= valence of M and is an integer equal to 2 to 7 inclusive, and
- d>
- e and is an integer having a value up to 8.
4 more elements
A visible light polymerizable composition consisting essentially of
- (D) a cationically polymerizable organic material, selected from the class consisting of cyclic organic ethers, cyclic organic esters, cyclic organic sulfides, organosilicon cyclics, lactams and lactones,
- (E) from 0.1% to 10% of (D) of a photoinitiator consisting essentially of an aryliodonium salt of the formula,
- [(R).sub.a (R.sup.1).sub.b I].sub.c .sup.+ [MQ.sub.d ].sup..sup.-(d-e),
- where R is a monovalent aromatic organic radical, R.sup.1 is a divalent aromatic organic radical, M is a metal or metalloid and Q is a halogen radical, a is a whole number equal to 0 or 2, b is a whole number equal to 0 or 1, the sum of a + b is equal to 2 or the valence of I,
- c=d-e
- e=valence of M and is an integer equal to 2 to 7 inclusive, and
- d e and is an integer having a value up to 8, and
- (F) from 0.001% to 3%, based on the weight of (D) of a cationic dye, selected from the class consisting of Acridine orange, Acridine yellow Phosphine R, Benzoflavin and Setoflavin T.
5 more elements
Dependencies are inferred from the claim text.