Polymer-polyols and polyurethanes based thereon

Details Polymer-polyols and polyurethanes based thereon Polymer-polyols and polyurethanes based thereon

1978-06-26

1980-04-15

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521179, 260 334R, 528 75, 528 73, C08G 1814, C08G 1863, C08K 506

Patent

active

041984889

ABSTRACT:
Fluid, stable polymer-polyols are provided which consist of an organic polyol medium and an interpolymer of a minor amount of polymerized ethylenically unsaturated dicarboxylic acid anhydride, such as maleic acid anhydride, and a major amount of at least one different polymerized ethylenically unsaturated monomer, the interpolymer being in the form of particles that are stably dispersed in the polyol. Polyurethane foams produced from these polymer/polyols display improved load bearing and compression set when compared with polymer/polyols produced in a similar manner without the ethylenically unsaturated dicarboxylic acid anhydride; elastomers so produced have improved tensile modulus and tear properties.

REFERENCES:
patent: 3304273 (1967-02-01), Stamberger
patent: 3383351 (1968-05-01), Stamberger
patent: 3523093 (1970-08-01), Stamberger
patent: 3652639 (1972-03-01), Pizzini et al.
patent: 3823201 (1974-07-01), Pizzini et al.
patent: 3850861 (1974-11-01), Fabris et al.
patent: 3966521 (1976-06-01), Patton et al.
patent: 4119586 (1978-10-01), Shah
Kuryla et al., Polymer Polyols, Jour. Cellular Plastics, Mar. 1966, pp. 1-3.

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