Chlorinated thermoplastics stabilized with aminouracils

Details Chlorinated thermoplastics stabilized with aminouracils Chlorinated thermoplastics stabilized with aminouracils

1982-05-17

1987-04-07

Kight, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 91, 524 99, 524100, 524109, 524117, 524120, 524147, 524151, 524153, C08K 534

Patent

active

046562095

ABSTRACT:
The invention relates to thermoplastic molding compositions based on vinyl chloride polymers and containing, as stabilizer, 0.1 to 5% by weight of an aminouracil of the formula I ##STR1## wherein R.sup.1 is hydrogen, C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.8 cycloalkyl, phenyl, benzyl, C.sub.1 -C.sub.4 hydroxyalkyl, hydroxyphenyl, C.sub.2 -C.sub.8 alkoxyalkyl, C.sub.2 -C.sub.8 alkylthioalkyl, C.sub.6 -C.sub.10 cycloalkoxyalkyl, C.sub.6 -C.sub.10 cycloalkylthioalkyl, C.sub.8 -C.sub.14 aralkoxyalkyl, C.sub.8 -C.sub.14 aralkylthioalkyl, C.sub.7 -C.sub.14 aryloxyalkyl, C.sub.7 -C.sub.14 arylthioalkyl, --NHR.sup.4, in which R.sup.4 is hydrogen, phenyl or chlorine-substituted phenyl, and R.sup.2 and R.sup.3, each independently of the other, are C.sub.2 -C.sub.21 alkyl, C.sub.6 -C.sub.12 aryl or C.sub.7 -C.sub.19 aralkyl, while one of R.sup.2 and R.sup.3 may also be hydrogen.
The addition of such aminouracils gives vinyl chloride polymers which are very well protected against heat-induced degradation. The aminouracils cause no haze in the polymer to be protected.

REFERENCES:
patent: 3436362 (1969-04-01), Hayer et al.
patent: 4352903 (1982-10-01), Abeler
C.A. 46, 10196a (1952).

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