Hydroxyl-terminated polyether-esters

Details Hydroxyl-terminated polyether-esters Hydroxyl-terminated polyether-esters

1984-02-21

1985-03-05

Nielsen, Earl A.

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

Synthetic resins

From carboxylic acid or derivative thereof

528 76, 528354, 528358, 560 60, 560116, 560126, 560185, C08G 6310

Patent

active

045032165

ABSTRACT:
The present invention provides substantially difunctional hydroxyl-terminated polyether-esters and a process for preparing the same. The process comprises reacting ethylene carbonate with a substituted or unsubstituted epsilon-caprolactone in the presence of a catalytic amount of a specified catalyst at a temperature of at least about 200.degree. C. The catalyst comprises an alkali metal salt, a quaternary ammonium salt, or a mixture thereof. The products of the invention are pourable liquid urethane-forming polyols at room temperature.

REFERENCES:
patent: 2962524 (1960-11-01), Hostettler et al.
patent: 3301824 (1967-01-01), Hostettler et al.
patent: 3324070 (1967-06-01), Hostettler et al.
patent: 3379693 (1968-04-01), Hostettler et al.
patent: 3629374 (1971-12-01), Lundberg et al.
patent: 3795701 (1974-03-01), Jenkins et al.
patent: 4291155 (1981-09-01), Brochet

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