Hydroxyethyl hydroxypropyl cellulose ether thickeners for aqueou

Details Hydroxyethyl hydroxypropyl cellulose ether thickeners for aqueou Hydroxyethyl hydroxypropyl cellulose ether thickeners for aqueou

1982-03-26

1983-11-15

Kight, III, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 44, 106 1434, 106170, 106197R, C08L 126, C08L 128

Patent

active

044156839

ABSTRACT:
Aqueous coating compositions are disclosed employing as a thickener an HEHPC ether having a haze point of at least about 70.degree. C., a gel point below 100.degree. C., a total molar substitution of about 2.5 to about 4.0 and having a ratio of hydroxypropyl molar substitution to hydroxyethyl molar substitution of about 1:2 to 2:1. The HEHPC thickeners as described exhibit good resistance to bacterial degradation, good color development and a haze point sufficiently high to allow normal formulation of the coating composition.

REFERENCES:
patent: 3388082 (1968-06-01), Rodgers, Jr. et al.
patent: 3652313 (1972-03-01), Nagata et al.
patent: 3709876 (1973-01-01), Glomski et al.
patent: 3741922 (1973-06-01), Glomski et al.
patent: 3749710 (1973-07-01), Koyanagi et al.
patent: 3769247 (1973-10-01), Glomski et al.
patent: 3873518 (1975-03-01), Strange et al.

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