Dyed polyesters, process for their preparation and their use for

Details Dyed polyesters, process for their preparation and their use for Dyed polyesters, process for their preparation and their use for

1977-03-28

1978-09-26

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From ketone or ketene reactant

260873, 260 40R, 528292, 528295, 528298, 528289, C08L 6700, C08G 6312

Patent

active

041169239

ABSTRACT:
When reacting a dyestuff having hydroxy, acyloxy, carboxy or carbalkoxy groups with a polyester derived from terephthalic and/or isophthalic acid and, per mol of dicarboxylic acid, about 0.75 to 1.5 mol of a low-molecular alkanetriol with primary alcohol groups (methylol groups) or, instead of said polyester, with the corresponding starting materials or precondensates, a polyester with chemically linked dyestuff units is obtained which is useful for dyeing plastics, especially polyolefins. The dyed plastic materials are heat resistant, even when containing fluorescent dyestuff units, transparent and uniformly dyed.

REFERENCES:
patent: 3520950 (1970-07-01), Kramm
patent: 3644270 (1972-02-01), Valiaveedan
patent: 3652719 (1972-03-01), Cleary
patent: 3769229 (1973-10-01), Noetzel
patent: 3845075 (1974-10-01), Fuchs et al.
patent: 3918976 (1975-11-01), Arai et al.
patent: 3923726 (1975-12-01), Benz

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