The invention relates to the use of compositions containing urea derivatives of cyanoacetic acid and urea as stabilisers for chlorine-containing thermoplastic plastics. Said derivatives are compounds of general formula (A), NC—CH
2
—CO—N(R
1
)—CO—NH—R
2
, where R
1
and R
2
=independently, a branched or unbranched, linear or cyclic, alkyl group with 1 to 18 C atoms, an aryl group with 6 to 18 C atoms, optionally substituted by one or more alkyl groups with 1 to 6 C atoms.
本发明涉及使用含有
氰乙酸尿素衍
生物和
尿素的组合物作为含
氯热塑性塑料的稳定剂。所述衍
生物是一般式(A)的化合物,NC—
CH2—CO—N(R1)—CO—NH—R2,其中R1和R2=独立地,具有1至18个碳原子的分支或非分支的线性或环状烷基,具有6至18个碳原子的芳基,可选地被一个或多个具有1至6个碳原子的烷基取代。