STABILISING SYSTEM FOR HALOGEN-CONTAINING POLYMERS Russian patent published in 2009 - IPC C08K3/16 C08K3/24 C08K3/32 C08K5/06 C08K5/42 C08K13/02 C08L27/06 

FIELD: chemistry.

SUBSTANCE: method of polyvinylchloride stabilisation involves adding thermostabilising amount of mix including at least A) 0.01 to 10 weight parts of one polyalkylene glycol selected out of group including tetraethylene glycol, tetraporopylene glycol and tetraglicerine, per 100 weight parts of polyvinylchloride, and B) 0.001 to 5 weight parts of at least one metal chloride per 100 weight parts of polyvinylchloride, to indicated polymer. Additionally the mix includes at least one more additive or stabiliser. Heat-resistant polymer composition includes polyvinylchloride and thermostabilising amount of mix: A) 0.01 to 10 weight parts of at least one polyalkylene glycol of the general formula per 100 weight parts of polyvinylchloride, where: R¹ and R² are independently selected out of group including hydrogen and alkyl; R³ and R⁴ are independently selected out of group including hydrogen and alkyl; n is 4; B) 0.01 to 5 weight parts of at least one metal chloride per 100 weight parts of polyvinylchloride.

EFFECT: application of nitrogen-free thermostabilising mix with high efficiency, preventing heavy metal ion presence in the mix.

14 cl, 11 ex