Dihydropyridine derivatives as stabilizers for vinyl chloride po

Details Dihydropyridine derivatives as stabilizers for vinyl chloride po Dihydropyridine derivatives as stabilizers for vinyl chloride po

1979-11-13

1982-03-02

Hayes, Lorenzo B.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

546321, C08K 534

Patent

active

043177689

ABSTRACT:
The instant invention relates to compounds of the general formula: ##STR1## wherein R.sub.1 represents an alkyl, alkenyl, phenyl or phenylalkyl radical, R.sub.2 represents an alkyl, alkenyl or alkynyl radical, a .omega.-halogenoethyl radical, an optionally substituted benzyl radical, a phenylalkenyl radical, an optionally substituted phenyl radical, a radical of the formula R.sub.4 --O--(CH.sub.2).sub.n -- wherein n is 2, 3, or 4 and R.sub.4 represents an optionally substituted alkyl radical or a phenyl radical, R.sub.3 represents a hydrogen atom, an alkyl, alkenyl or phenyl radical.
The compounds of formula I have been found to be useful as stabilizers for vinyl resins.

REFERENCES:
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patent: 3730943 (1973-05-01), Weisfeld et al.
patent: 3773773 (1973-11-01), Bossert
patent: 3799936 (1974-03-01), Meyer et al.
patent: 3829396 (1974-08-01), Oakes et al.
patent: 4057530 (1977-11-01), Pigerol et al.
patent: 4209439 (1980-06-01), Pigerol et al.
patent: 4214088 (1980-07-01), Abeler et al.
patent: 4239893 (1980-12-01), Pigerol et al.

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