Polysilylesters having a polyalkylpiperidine as part of the poly

Details Polysilylesters having a polyalkylpiperidine as part of the poly Polysilylesters having a polyalkylpiperidine as part of the poly

1978-11-28

1981-02-10

Welsh, Maurice J.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525106, 525431, 525452, 528 27, C08G 7726

Patent

active

042502683

ABSTRACT:
Condensation polymers or addition polymers which contain sterically hindered polyalkylpiperidine groups are proposed as light stabilizers for plastics. The polymers concerned are relatively low-molecular polymers and a difunctional derivative of a polyalkylpiperidine is additionally used for the manufacture of these. The piperidine radical can be present in the main chain or as a side group of the polymeric stabilizer. Polymeric stabilizers of this type do not tend to migrate out of the plastic or to be removed by extraction; they are therefore very permanent in use.

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patent: 4021432 (1977-05-01), Holt et al.

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