Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1982-10-26
1984-10-23
Ives, Patricia C.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428351, 428448, 428451, 428459, 428480, 428482, 430532, 430533, B32B 516, B32B 2706, G03C 178
Patent
active
044789076
ABSTRACT:
An aqueous copolyester dispersion suitable for the subbing of polyester film without use of organic solvents wherein the copolyester contains recurring ester groups derived from ethylene glycol and an acid mixture essentially consisting of 20 to 60 mole % of isophthalic acid, 6 to 10 mole % of sulphoisophthalic acid whose sulfo group is in salt from, 0.05 to 1 mole % of an aromatic polycarboxylic acid compound having at least three carboxylic acid groups, which compound is not capable of forming intramolecularly an anhydride and includes at least two carboxylated aromatic nuclei, and the balance of terephthalic acid; the copolyester has a glass transition temperature of at least 50.degree. C. and an intrinsic viscosity of from 0.15 to 0.45 dl/g when measured at 25.degree. C. in a mixture of phenol/o-dichlorobenzene (60/40 by volume).
REFERENCES:
patent: 4328283 (1982-05-01), Nakadate et al.
patent: 4350807 (1982-09-01), McConnell et al.
patent: 4394442 (1983-07-01), Miller
De Winter Walter F.
Marien August M.
Van Gossum Lucien J.
Van Thillo Etienne A.
AGFA-GEVAERT N.V.
Daniel William J.
Ives Patricia C.
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