Polyetherester resins from diol diesters

Details Polyetherester resins from diol diesters Polyetherester resins from diol diesters

1996-03-20

1997-10-14

Acquah, Samuel A.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528272, 528275, 528281, 528296, 528300, 528302, 528303, 525 10, 525 11, 525437, 525444, 525445, 525447, 525448, 523500, C08F 2000, C08G 6302

Patent

active

056773960

ABSTRACT:
An improved process for making polyetherester resins is disclosed. The process comprises reacting a polyether with a diol diester in the presence of a catalyst that promotes random insertion of the diester into carbon-oxygen bonds of the polyether to produce the polyetherester resin. The process of the invention offers many advantages, including higher resin yields, reduced by-product generation, and the ability to make resins with low color and low acid numbers. The resins are useful for making polyetherester thermosets.

REFERENCES:
patent: 5319006 (1994-06-01), Yang et al.
patent: 5436313 (1995-07-01), Klang et al.
patent: 5436314 (1995-07-01), Yang et al.
patent: 5569737 (1996-10-01), Yang et al.
patent: 5610205 (1997-03-01), Yang et al.
patent: 5612444 (1997-03-01), Cai et al.

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