Flame retardant flexible urethane foams

Details Flame retardant flexible urethane foams Flame retardant flexible urethane foams

C - Chemistry, Metallurgy

08

K

403/24

C08K 5/47 (2006.01) C08G 18/48 (2006.01) C08G 18/62 (2006.01) C08J 9/00 (2006.01)

Patent

CA 1061949

FLAME RETARDANT FLEXIBLE URETHANE ABSTRACT The discoloration occurring during commercial production of large buns or slabs of low density, flexible and semiflexible polyetherurethane foams containing chlorine- containing polymers such as polyvinyl chloride, zinc oxide and antimony oxide, in which optionally part of the chlorine-containing polymer can be replaced with a chlo- rinated paraffin provided a proportionate reduction is made in the amount of the zinc oxide employed, is reduced or prevented by using a small amount of a zinc salt selected from the group consisting of and Image the Rs being the Image same or different, where R is -R', -OR', -halogen, -hydrogen, or a -nitro group, R' being a Cl to C10 alkyl, cycloalkyl, aralkyl, alkaryl or aryl group, preferably said zinc salt has the formula: Image .

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