发明名称 |
Gamma crystalline modification of 2,2',2-nitriloÝtriethyl-tris-(3,3',5,5'-tetra-tert-butyl-1, 1'-biphenyl-2,2'-diyl)phosphite¨ |
摘要 |
The gamma crystalline modification of 2,2',2''-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diyl)phosphite] is obtained by crystallizing or recrystallizing said compound from an alkanol of 4 to 8 carbon atoms. The gamma crystalline form is an effective process stabilizer for polyolefins, particularly polypropylene. |
申请公布号 |
AU7194394(A) |
申请公布日期 |
1995.03.14 |
申请号 |
AU19940071943 |
申请日期 |
1994.08.03 |
申请人 |
CIBA-GEIGY AG |
发明人 |
STEPHEN D. PASTOR;SAI P SHUM;PAUL A ODORISIO |
分类号 |
C07B63/00;C07F9/6574;C08K5/51;C08K5/52;C08K5/527;C08L23/02;C09K15/32 |
主分类号 |
C07B63/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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