Process for making water-resistant polyetherester resins and the

Details Process for making water-resistant polyetherester resins and the Process for making water-resistant polyetherester resins and the

1998-01-13

1999-09-14

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...

528274, 528275, 528297, 528300, 528301, 528302, 528306, 525437, 525440, 525445, 525 11, 525 41, 525 42, 525 43, 524745, 524779, 521 82, C08F 2000

Patent

active

059524367

ABSTRACT:
A general approach to making water-resistant polyetherester resins and thermosets is disclosed. In one aspect, an unsaturated polyetherester resin prepared by inserting a carboxylic acid derivative into a polyether is co-cured with a vinyl monomer and a di- or polyisocyanate to give a water-resistant, thermoset that has excellent dimensional stability, flexibility, and strength properties. Processes for making low-viscosity resins that give thermosets with good water resistance are also described. In one process, an unsaturated polyetherester resin intermediate reacts with a mono-functional isocyanate or fatty alcohol to produce an easy-to-formulate, low-viscosity, low-molecular-weight capped resin.

REFERENCES:
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patent: 5319006 (1994-06-01), Yang et al.
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patent: 5436314 (1995-07-01), Yang et al.
patent: 5677396 (1997-10-01), Klang
patent: 5696225 (1997-12-01), Cai et al.

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