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2. 发明专利

JPH0395190A PRODUCTION OF ALPHA,OMEGA-DICHLOROORGANOPOLYSILOXANE 失效
公开(公告)号：JPH0395190A
公开(公告)日：1991-04-19
申请号：JP23424889
申请日：1989-09-08
申请人： KAO CORP
发明人： UCHIDA HIROAKI , KABE YOSHIO , YOSHINO KOJI
IPC分类号： B01J27/10 , B01J27/13 , C07B61/00 , C07F7/12
摘要： PURPOSE:To obtain the subject polysiloxane having a definite and uniform siloxane chain length and useful as an intermediate for silicones by reacting dihydrogen organopolysiloxane with carbon tetrachloride in the presence of a metal chloride. CONSTITUTION:The objective polysiloxane of formula II is produced by reacting an alpha,omega-dihydrogen organopolysiloxane of formula I (R and R are H, alkyl, alkenyl, aryl or halogenoalkyl; (n) is 3-10) with preferably 100-500mol% (based on the compound of formula I) of carbon tetrachloride in the presence of preferably 0.01-10mol% (based on the compound of formula I) of a metal chloride (preferably palladium chloride) preferably at 10-40 deg.C.

3. 发明专利

JPH03263430A POLYSILOXANE AND PRODUCTION THEREOF 失效
公开(公告)号：JPH03263430A
公开(公告)日：1991-11-22
申请号：JP6225090
申请日：1990-03-13
申请人： KAO CORP
发明人： UCHIDA HIROAKI , YOSHINO KOJI , KABE YOSHIO
IPC分类号： C08G77/24 , C08G77/06 , C08G77/14 , C08G77/16 , C08G77/22 , C08G77/42 , C08G77/44
摘要： PURPOSE:To obtain the subject polysiloxane useful as an elongation block for synthesizing branched polysiloxanes having specific structures, by selectively acyloxylating only one end of an alpha,omega-dihydropolysiloxane having a specific structure. CONSTITUTION:Only one end of a single alpha,omega-dihydropolysiloxane of formula I (R is alkyl or alkenyl directly bonded to Si; n is >=0) is selectively acyloxylated to obtain an alpha-hydro-omega-acyloxypolysiloxane of formula II. The compound of formula II is partially hydrolyzed into alpha-hydro-omega-hydropolysiloxane of formula III and subsequently condensed with chlorosilane to provide the objective polysiloxane of formula IV (m is 0, 1; x is 2, 3; m+x=3).

4. 发明专利

JPH0395191A ALPHA-CHLORO-OMEGA-HYDROGEN ORGANOPOLYSILOXANE AND ITS PRODUCTION 失效
公开(公告)号：JPH0395191A
公开(公告)日：1991-04-19
申请号：JP23424989
申请日：1989-09-08
申请人： KAO CORP
发明人： UCHIDA HIROAKI , KABE YOSHIO , YOSHINO KOJI
IPC分类号： C07F7/12 , C08G77/22 , C08G77/385
摘要： NEW MATERIAL:The compound of formula I (R1 and R2 are H, alkyl, alkenyl, aryl or halogenoalkyl; (n) is 3, 4 or 6-8). EXAMPLE:1-Chloro-9-hydrogendecamethylpentasiloxane. USE:An intermediate for silicones. PREPARATION:The objective compound of formula I wherein (n) is 3-10 is produced by reacting an alpha,omega-hydrogen organopolysiloxane of formula II ((n') is 3-10) with preferably 1/3mol (based on 1mol of the compound of formula II) of carbon tetrachloride in the presence of preferably 1-4mol% (based on the compound of formula II) of a radical initiator (preferably benzoyl peroxide) preferably at 50-120 deg.C.

5. 发明专利

JPH03263431A SILICON-CONTAINING DENDRIMER 失效
公开(公告)号：JPH03263431A
公开(公告)日：1991-11-22
申请号：JP6224990
申请日：1990-03-13
申请人： KAO CORP
发明人： UCHIDA HIROAKI , KABE YOSHIO , YOSHINO KOJI
IPC分类号： C08G77/44 , C08G77/42
摘要： PURPOSE:To provide the subject dendrimer having silicon-containing functional groups and a large functional group density per molecular units, capable of having a space therein when several generations are overlapped, having physical properties characteristic to silicon compounds and useful as a gelling agent, etc. CONSTITUTION:A dendrimer of the formula [X Y (Z )Ni is the same in one generation; X Y (Z )Nt is the same; I is multifunctional nucleus; Z is a functional group bonded to the nucleus and the first generation X group; Nc is the number of functional groups bonded to the nucleus; X is an i generation repeating unit functional group bonded to Y and (i+1) generation X group; Ni is at least two corresponding to the number of multifunctional head portions of Y ; N is at least two corresponding to the number of multifunctional head portions of Y ; X is the monofunctional tail portion of the final generation repeating unit Y ; Z is an end group bonded to Y ; Nt is an end group bonded to Y ; Nt is the number of Z groups; i is the number of specific generations continued from 1 to t-1; either one of I-Z is a Si-containing functional group].

6. 发明专利

JPH0390089A NEW CYCLIC ORGANOPOLYSILOXANE AND PRODUCTION THEREOF 失效
公开(公告)号：JPH0390089A
公开(公告)日：1991-04-16
申请号：JP22621389
申请日：1989-08-31
申请人： KAO CORP
发明人： UCHIDA HIROAKI , KABE YOSHIO , YOSHINO KOJI
IPC分类号： C07F7/08 , C07F7/21 , C08G77/38
摘要： NEW MATERIAL:Compounds of formula I (R -R are each alkyl, alkenyl, aryl or halogenated alkyl; n is 7-9). EXAMPLE:Pentadecamethylcyclooctasiloxane. USE:A silylation agent and a raw material of a silicone oil and a silicone rubber. PREPARATION:Palladium carbon is acted on an alpha,omega-dihydrodieneorganopolysiloxane represented by formula II (m is 5-7) to obtain an alpha,omega- dihydroxyorganopolysiloxane shown by formula III. With the resultant compound dichlorosilane expressed by formula IV is then reacted.

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