Substituted 1-oxy-4-acyloxypiperidine and 1-oxy-4-acylaminopiperidine stabilizers
申请人:CIBA-GEIGY AG
公开号:EP0512951A1
公开(公告)日:1992-11-11
Substituted 1-oxy-4-acyloxypiperidines or 1-oxy-4-acylaminopiperidines of formula I
wherein R₁, R₂, R₃ and R₄ are independently hydrogen, alkyl or substituted alkyl, R₅ is hydrogen, alkyl, cycloakyl, allyl or benzyl, X is -O- or -NE-, E is hydrogen, akyl or cycloakyl, A is an n-valent aliphatic or aromatic hydrocarbon radical, and n is 1 to 4 are effective in providing melt flow stabilization to polymeric materials during processing.
Substituted 1-oxy-4-acyloxypiperidine and 1-oxy-4-acylaminopiperidine
申请人:Ciba-Geigy Corporation
公开号:US05185448A1
公开(公告)日:1993-02-09
Substituted 1-oxy-4-acyloxypiperidines or 1-oxy-4-acylaminopiperidines of formula I ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently hydrogen, alkyl or substituted alkyl, R.sub.5 is hydrogen, alkyl, cycloalkyl, allyl or benzyl, X is --O-- or --NE--, E is hydrogen, alkyl or cycloalkyl, A is an n-valent aliphatic or aromatic hydrocarbon radical, and n is 1 to 4 are effective in providing melt flow stabilization to polymeric materials during processing.