Branched low molecular weight polyesters levelling agents for dy

Details Branched low molecular weight polyesters levelling agents for dy Branched low molecular weight polyesters levelling agents for dy

1977-09-30

1979-09-18

Lee, Lester L.

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

Treating textiles or fibers from synthetic resin or natural...

528173, 528293, 528294, 528295, D06P 162, D06P 352

Patent

active

041681452

ABSTRACT:
Dyeing with disperse dyes is made more uniform when there is used as a levelling agent a branched polyester which has an apparent average molecular weight of from about 600 to about 5,000, disperses itself in water, and is essentially an ester-linked combination of hydrocarbyloxy groups and carboxyl-derived acyl groups, the groups being linked together as a branched chain by the ester linkages and relative to the carboxy-derived acyl groups the polyester contains from about 5 to about 50 mol.% of COOH or COOM groups and less than 5 mol.% of SO.sub.3 M groups, wherein M denotes the cation of an alkali metal, the ammonium ion or the cationic radical of an organic amine, the number of branches on an interesterified group being not over three and at least 50 mol.% of the hydrocarbyloxy groups are in diethylene glycol or triethylene glycol groups.

REFERENCES:
patent: 3018272 (1962-01-01), Griffing et al.
patent: 3033824 (1962-05-01), Huffman
patent: 3528947 (1970-09-01), Lappin et al.
patent: 3657193 (1972-04-01), Caldwell
patent: 3882185 (1975-05-01), Rudlmann et al.

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