Ortho-substituted phenyl phosphite additive composition

Details Ortho-substituted phenyl phosphite additive composition Ortho-substituted phenyl phosphite additive composition

1979-07-13

1981-08-04

Schain, Howard E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

252400A, 252400R, 252407, 260 23XA, 260 457PH, 260 4575W, 260 4585R, 260 4595J, 260 4595P, 260 4595S, C08K 507, C08K 552

Patent

active

042821410

ABSTRACT:
An additive composition for improving the color stability of a vinyl chloride polymer stabilized with environmentally acceptable stabilizers comprises a 1,3-diketone or 1,3-diketone Na, K., Li, Mg, Zn, Ba, Ca, Sn, or Sr salt and an organic phosphite having the formula ##STR1## wherein R.sub.1 is a phenyl, cycloalkyl, t-butyl, or t-amyl group, R.sub.2 and R.sub.3 are each a hydrogen atom or phenyl, cycloalkyl, or an alkyl group having one to five carbon atoms, R.sub.4 is a hydrogen atom or a methyl group, and each of R.sub.5 and R.sub.6 independently is a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group having 5 to 20 carbon atoms, an aryl group having 6 to 12 carbon atoms, or an ether-substituted group having 3 to 80 carbon atoms and 1 to about 40 ether oxygen atoms.

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