Method for the preparation of finely dispersed polyurethane urea

Details Method for the preparation of finely dispersed polyurethane urea Method for the preparation of finely dispersed polyurethane urea

1980-02-08

1982-03-23

Pertilla, Theodore E.

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

Synthetic resins

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

523336, 524591, 524310, 524839, 528 61, C08L 7506

Patent

active

043211739

ABSTRACT:
The invention disclosed herein relates to a method for the preparation of finely dispersed polyurethane ureas. The method comprises the steps of first preparing a chain extended polyurethane from at least one diisocyanate, at least one polydiol, and diol chain extenders. The chain-extender component of the reaction is comprised of low molecular weight diols having side chains or ether groups, unbranched low molecular weight diols and/or monofunctional compounds having an active hydrogen such as the amines, amides or alcohols. The chain extended polyurethane is then treated with a nonionic emulsifier and emulsified first with warm water, and then with cold water. A diamine or a mixture of diamines is then added to the emulsion.

REFERENCES:
patent: 2968575 (1961-01-01), Mallonee
patent: 3252848 (1966-05-01), Bursellino
patent: 3401133 (1968-09-01), Grace et al.
patent: 3655627 (1972-04-01), Hutzler et al.
patent: 3684639 (1972-08-01), Keberle et al.
patent: 4160686 (1979-07-01), Niederdellmann et al.

Affiliated with

Also associated with

Rating

Method for the preparation of finely dispersed polyurethane urea does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for the preparation of finely dispersed polyurethane urea, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the preparation of finely dispersed polyurethane urea will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1650051