Polymer-polyols and polyurethanes based thereon

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

C - Chemistry, Metallurgy

08

L

400/104, 402/136

C08L 35/00 (2006.01) C08F 283/06 (2006.01) C08F 291/08 (2006.01) C08G 18/40 (2006.01) C08G 18/48 (2006.01) C08G 18/62 (2006.01) C08G 18/63 (2006.01) C08L 31/02 (2006.01)

Patent

CA 1159193

ABSTRACT OF THE DISCLOSURE Fluid, stable polymer-polyols are provided which consist of an organic polyol medium and an inter- polymer 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. RELATED APPLICATIONS Priest, U. S. Patent No. 4,208,314. Simroth, U. S. Patent No. 4,104,236. Van Cleve et al. U. S. Patent No. 4,172,825.

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