Flame retardant flexible urethane foams

Details Flame retardant flexible urethane foams Flame retardant flexible urethane foams

1976-03-29

1977-04-19

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25BB, 260 25BE, 260 25AJ, 260 4575W, C08J 900

Patent

active

040187241

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 chlorinated 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 ##STR1## --halogen, --hydrogen, or a --nitro group, R' being a C.sub.1 to C.sub.10 alkyl, cycloalkyl, aralkyl, alkaryl or aryl group, preferably said zinc salt has the formula: ##STR2##

REFERENCES:
patent: 3714077 (1973-01-01), Cobbledick et al.
patent: 3884849 (1975-05-01), Molbert
patent: 3931060 (1976-01-01), Schubart et al.

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