Polyester resin composition

Details Polyester resin composition Polyester resin composition

1975-04-03

1976-11-09

Cockeram, H.S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 75M, 260 775TB, 427 27, C08G 1842, C08G 1880, B05D 106

Patent

active

039910342

ABSTRACT:
A polyester resin composition suitable for preparing a powder paint, obtained by mixing a polyester, which is obtained by depolymerizing a polyester having a high degree of polymerization with an intrinsic viscosity of about 0.4 or more with at least one of a substantially nonvolatile alcohol and an ester having at least one alcoholic hydroxyl group in the same molecule, melts at a temperature between about 45.degree. C and about 120.degree. C and has terminal hydroxyl groups and an average degree of polymerization ranging from about 5 to about 50, with a polyisocyanate blocked with an alkyl p-hydroxybenzoate by melting. The polyester resin composition can be readily pulverized, has no blocking property and has the fluidity at relatively low temperatures sufficient to facilitate pigmentation, and can form beautiful coatings. The coatings have good resistance to weathering, solvents, humidity and fouling, and excellent adhesion to a metal.

REFERENCES:
patent: 3317463 (1967-05-01), Schonfeld et al.
patent: 3666724 (1972-05-01), Hostettler
patent: 3684769 (1972-08-01), Abbott et al.
patent: 3808160 (1974-04-01), Steinmetz
patent: 3819586 (1974-06-01), Rudolph et al.

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