Sealing frit pastes
OwnerKimberly S. Fink, Joshua U. Otaigbeinventors
Life of this patent
Estimating the term…
Abstract
The present invention is directed to the preparation of frit pastes suitable for sealing together preformed glass parts, being especially suitable for sealing glass panels to funnels of cathode ray tubes. The pastes comprise a mixture of frit particles, a lacquer, and at least one additive in an amount of 0.0005-2% by weight total of the lacquer. The preferred additives are selected from the group of alkyl organic phosphate esters, a mixed titanium ortho ester complexes, and substituted sorbitols in the polyol acetal family.
Claims11
A frit paste formulation designed for sealing preformed glass parts comprising a mixture of lead-free glass frit particles in a lacquer with 0.0005-2% by weight total of said lacquer of an additive selected from the group consisting of a substituted sorbitol in the polyol acetal family, a fumed silica treated with dimethyldichlorosilane, a mixture of (i) a titanium ortho ester complex having the general formulate (RO).sub.n Ti, wherein n is about 4 and R represents an organic group which is compatible with the lacquer and frit, and (ii) an alkyl organic phosphate ester, one of the above additives in conjunction with a co-additive selected from the group consisting of hectorite clay;
- a polyacrylic acid;
- a polymeric fatty ester;
- castor oil;
- and a 50-55% by weight solution of a zinc salt of alkyl naphthalene sulfonic acid in alkyl glycol butyl ether;
- and a blend of two or more of the co-additives with one another.
A frit paste formulation designed for sealing preformed glass parts comprising a mixture of lead-free glass frit particles in a lacquer with 0.0005-2% by weight total of said lacquer of an additive selected from the group consisting of (1) a substituted sorbitol in the polyol acetal family;
- (2) a fumed silica treated with dimethyldichlorosilane;
- (3) a mixture of (i) a titanium ortho ester complex having the general formula (RO).sub.n Ti, wherein n is about 4 and R represents an organic group which is compatible with the lacquer and frit, and (ii) an alkyl organic phosphate ester;
- (4) a blend of two or more co-additives selected from the group consisting of hectorite clay;
- a polyacrylic acid;
- a polymeric fatty ester;
- and castor oil.
Dependencies are inferred from the claim text.