3,6-Di-t-butyl-2-naphthyl catechol phosphite and compositions th

Details 3,6-Di-t-butyl-2-naphthyl catechol phosphite and compositions th 3,6-Di-t-butyl-2-naphthyl catechol phosphite and compositions th

1983-05-27

1985-01-22

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

260937, 524117, C08K 534, C08K 552

Patent

active

044953208

ABSTRACT:
3,6-di-t-butyl-2-naphthyl catechol phosphite is readily prepared by the reaction of catechol phosphorodichloridite and 3,6-di-t-butylnathphol in the presence of a trialkyl amine in a solvent. The 3,6-di-t-butyl-2-naphthyl catechol phosphite is an excellent stabilizer for polymers, including polypropylene, and forms synergistic combinations with hydroxyphenylalkyleneyl isocyanurates that provide excellent resistance to polymer breakdown during processing.

REFERENCES:
patent: 2058343 (1936-10-01), Moran et al.
patent: 3796684 (1974-03-01), Dever et al.
patent: 4025486 (1977-05-01), Gilles
patent: 4184999 (1980-01-01), Olander
patent: 4187212 (1980-02-01), Zinke et al.
patent: 4341880 (1982-07-01), Toyoda et al.
patent: 4351759 (1982-09-01), Spivack
Levin et al., Chem. Abs., vol. 61, 1964, 9634e.

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