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US 4,308,118 AGranted
Deep section curable epoxy resin putty
AssigneeGeneral Electric Company
InventorCharles D. Dudgeon
Life of this patent
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Abstract
A composition uniquely adapted for use as a heat and ultraviolet light hardenable putty for filling metal surfaces comprises an epoxidic prepolymer, a catalyst precursor combination comprising an aromatic sulfonium salt of a complex halogenide and an aromatic iodonium salt of a complex halogenide, a copper salt catalyst activator, and a mineral filler in an amount sufficient to produce a paste-like consistency.
Claims18
A polymerizable composition comprising
- (i) an epoxidic prepolymer;
- (ii) an effective amount of a catalyst precursor combination therefore comprising (a) from 10 to 90 parts by weight of an aromatic sulfonium salt of a complex halogenide and (b) from 90 to 10 parts by weight of an aromatic iodonium salt of a complex halogenide;
- (iii) a small but effective amount of a copper salt catalyst activator;
- and
- (iv) a mineral filler in an amount at least sufficient to produce a paste-like consistency in said composition.
2 more elements
Dependencies are inferred from the claim text.