Oligomeric malonates, useful as light stabilizers for plastics
申请人:ICI AMERICAS INC.
公开号:EP0219333A2
公开(公告)日:1987-04-22
Oligomeric derivatives of the dialkyl esters of polyalkyl 1,5-dioxa-9-azaspiro-[5.5]undecane-3,3-dicarboxylic acid are useful light stabilizers for synthetic polymer resins such as polyolefins, and in particular, polypropylene.
Stabilisation of polymeric organic materials by using synergistic mixtures comprising sterically hindered cyclic amines and derivatives of 3-pyrazolidinone or 1,2,4-triazolidine-3,5-dione
申请人:CIBA-GEIGY AG
公开号:EP0517658A1
公开(公告)日:1992-12-09
The present invention relates to synergistic mixtures for stabilising polymeric organic materials against light, heat and oxidation; said synergistic mixtures contain sterically hindered cyclic amines and particular derivatives of 3-pyrazolidinone or 1,2,4-triazolidine-3,5-dione. In addition, the present invention relates to some new derivatives of 3-pyrazolidinone or 1,2,4-triazolidine-3,5-dione.
Malonate compounds useful as light stabilizers for plastics
申请人:CYTEC TECHNOLOGY CORP.
公开号:EP0222512B1
公开(公告)日:1996-07-31
Stabilizing mixtures for organic polymers
申请人:——
公开号:US20030189192A1
公开(公告)日:2003-10-09
Stablizing mixtures for organic polymers comprising: (a) at least one compound belonging to the group of 3-pyrazolidinones; (b) at least one compound belonging to the group of organic phosphites or phosphonites; (c) at least one compound belonging to the group of sterically hindered phenols; and, optionally, (d) at least one compound belonging to the group of sterically hindered amines. The above mixtures can be used as stabilizers of organic polymers to degradation caused by oxygen, heat and/or light.