Polyester resins for polyurethane foams

Details Polyester resins for polyurethane foams Polyester resins for polyurethane foams

C - Chemistry, Metallurgy

07

C

403/40, 260/479.

C07C 69/80 (2006.01) C08G 18/42 (2006.01) C08G 63/66 (2006.01)

Patent

CA 1177844

ABSTRACT OF THE DISCLOSURE The machine processing character as well as the stress-strain properties of polyester polyurethane foam are improved by the use of a cross-linking polyol, a viscosity increasing dicarboxylic acid or anhydride such as phthalic anhydride, and by the use of specific minor amounts of poly(oxyethylene) glycol, in the esteri- fication formula of foam grade polyester resins. A nonhydrophillic flexible polyester based polyurethane foam is produced.

393025

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