发明名称 |
MANUFACTURE OF HIGH MOLECULAR POLYSILOXANE BY POLYSILOXANE POLYMERIZATION OR REARRANGEMENT UNDER PRESENCE OF CATALYST COMPRISING POROUS INORGANIC CARRIER COATED WITH POLYMER FILM HAVING SULFONIC GROUPS OR PHOSPHORIC GROUPS |
摘要 |
Polysiloxanes of relatively low molecular weight are catalytically polymerized/rearranged into high molecular weight polysiloxanes in the presence of a cationic catalyst comprising a porous, inorganic mineral particulate support having an average pore diameter in excess of 20 ANGSTROM and a pore volume ranging from 0.2 to 2 ml/g, said porous support being coated with less than 15 mg/m2 of a film of polymeric material comprising pendant sulfonic or phosphonic acid functions, and said polymeric material being characterized by an ion exchange capacity of less than 2 milliequivalents per gram. |
申请公布号 |
JPS5821427(A) |
申请公布日期 |
1983.02.08 |
申请号 |
JP19820078488 |
申请日期 |
1982.05.12 |
申请人 |
ROONU PUURAN SUPESHIARITE SHIMIIKU |
发明人 |
ADORIAN DOROMAARU;KUROODO MIE |
分类号 |
C08G77/00;B01J31/08;B01J31/10;C08G77/08 |
主分类号 |
C08G77/00 |
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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