Poly 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylesters usefu

Details Poly 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylesters usefu Poly 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylesters usefu

1988-03-29

1990-03-13

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524104, 524105, 546249, 546263, C07D21355, C08K 534

Patent

active

049083988

ABSTRACT:
Poly-dihydro-2,6-dimethylpyridine-3,5-dicarboxylesters of general formula (I) ##STR1## in which A, B, m, n, k, j, R, R.sup.1 and R.sup.2 have the meanings defined in the text, useful as thermal stabilizers for synthetic polymers, in particular for polyvinylchloride-based masses.
The compounds of formula (I) are preferably used in combination with the usual stabilizers based on organic metal derivatives. They can also be used combined with agents which exert a synergic action in maintaining a low color of manufactured articles subjected to heating, and in particular with betadicarbonyl compounds of formula (II):

REFERENCES:
patent: 3939171 (1976-02-01), Meyer et al.
patent: 4214088 (1980-07-01), Abeler et al.
patent: 4239893 (1980-12-01), Pigerol et al.
patent: 4317768 (1982-03-01), Pigerol et al.
patent: 4515916 (1985-05-01), Molt

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