公开(公告)号：US5939507A

公开(公告)日：1999-08-17

申请号：US62914

申请日：1998-04-20

申请人： Tadashi Okawa

发明人： Tadashi Okawa

IPC分类号： C08G77/08 ,  C08G77/12 ,  C08G77/06

CPC分类号： C08G77/12

摘要： A method for manufacturing a siloxane compound described by formula R.sup.1.sub.m Si{OSi(CH.sub.3).sub.2 H}.sub.(4-m) comprising reacting a silane compound or condensation product of a silane compound described by formula R.sup.1.sub.m Si(OR.sup.2).sub.(4-m), where R.sup.1 is selected from the group consisting of hydrogen and substituted or unsubstituted monovalent hydrocarbon groups, R.sup.2 is hydrogen, alkyl groups and alkoxyalkyl groups, and m is an integer from 0 to 3, with 1,1,3,3-tetramethyldisiloxane in an aqueous solution of an acid in which the acid concentration is 1.0 wt % or less, and the molar ratio of the aqueous solution to the 1,1,3,3-tetramethyldisiloxane is in the range of 0.5 to 1.5. The method is particularly useful for manufacturing siloxane compounds having dimethylhydrodosiloxy groups.

摘要翻译： 制备式R1mSi {OSi（CH3）2H}（4-m）所述硅氧烷化合物的方法，包括使硅烷化合物或由式R1mSi（OR2）（4-m）所述的硅烷化合物的缩合产物，其中R 1 选自氢和取代或未取代的一价烃基，R 2是氢，烷基和烷氧基烷基，m是0-3的整数，其中1,1,3,3-四甲基二硅氧烷在水溶液 的酸的浓度为1.0重量％以下，水溶液与1,1,3,3-四甲基二硅氧烷的摩尔比在0.5〜1.5的范围内。 该方法对于制备具有二甲基氢二硅氧基的硅氧烷化合物特别有用。

公开(公告)号：US5874602A

公开(公告)日：1999-02-23

申请号：US049366

申请日：1998-03-27

申请人： Ryuko Manzouji ,  Tadashi Okawa

发明人： Ryuko Manzouji ,  Tadashi Okawa

IPC分类号： C07F7/08

CPC分类号： C07F7/0836

摘要： A process for preparing a compound having the formula ##STR1## is disclosed, said process comprising hydrolyzing an organosilicon compound of the formula ##STR2## wherein X is a radically polymerizable group-functional organic group, R.sup.1 is independently selected from monovalent hydrocarbon groups that are free of aliphatic unsaturation, R.sup.2 is independently selected from the group consisting of hydrogen and a monovalent hydrocarbon group and m is an integer having a value of 1 to 3.

摘要翻译： 公开了制备具有式“IMAGE”的化合物的方法，所述方法包括水解式IMA的有机硅化合物，其中X是可自由基聚合的基团官能的有机基团，R 1独立地选自单价烃基， 不含脂肪族不饱和键，R2独立地选自氢和一价烃基，m为1〜3的整数。

公开(公告)号：US5486635A

公开(公告)日：1996-01-23

申请号：US428938

申请日：1995-04-25

申请人： Tadashi Okawa

发明人： Tadashi Okawa

IPC分类号： C08G77/06 ,  C08G77/08 ,  C07F7/08

CPC分类号： C08G77/06 ,  C08G77/08

摘要： There is disclosed a method for preparing a diorganopolysiloxane having a functional group at only one end of the molecular chain and having the formulaR(R.sub.2 SiO).sub.p Bwherein R is an independently selected monovalent hydrocarbon group, B is selected from the group consisting of a hydrogen atom and an organosilyl group having the formula--SiR.sub.2 R'in which R is as defined above, R' is selected from the group consisting of a hydrogen atom and an organic functional group and p is an integer having a value of at least 1, said method comprising:(I) polymerizing(A) a cyclic trisiloxane, using(C) a lithium compound catalyst, said polymerization reaction taking place in the presence of(D) a compound selected from the group consisting of a nitrile compound and an ester compound and(E) a polar solvent which does not contain activated hydrogen; and(II) terminating the nonequilibrium polymerization reaction product obtained from step (I) using(F) a compound selected from the group consisting of an acid and an organohalogenosilane.

摘要翻译： 公开了一种在分子链的一端制备具有官能团的二有机聚硅氧烷的方法，其具有式R（R 2 SiO）pB，其中R是独立选择的一价烃基，B选自氢 原子和具有式-SiR 2 R'的有机甲硅烷基，其中R如上所定义，R'选自氢原子和有机官能团，p是具有至少1的整数，所述 方法包括：（I）使用（C）锂化合物催化剂使（A）环状三硅氧烷聚合，所述聚合反应在（D）选自腈化合物和酯化合物的化合物存在下进行 和（E）不含活性氢的极性溶剂; 和（II）使用（F）选自酸和有机卤代硅烷的化合物来终止由步骤（I）获得的非平衡聚合反应产物。

公开(公告)号：US5364896A

公开(公告)日：1994-11-15

申请号：US974053

申请日：1992-11-10

申请人： Tadashi Okawa ,  Shuji Yamada

发明人： Tadashi Okawa ,  Shuji Yamada

IPC分类号： C07F7/08 ,  C08K5/5419 ,  C08L83/04 ,  C08K5/54

CPC分类号： C07F7/0836 ,  C08K5/5419

摘要： The triorganosiloxydiphenylsilanols of the present invention are novel silicone compounds that are useful as plasticizers for silicone rubbers. The present invention also relates to a method for preparing these compounds in high yield and purity and a method for preparing filled curable organosiloxane compositions using the present compounds as plasticizers.

摘要翻译： 本发明的三有机硅氧基二苯基硅烷醇是可用作硅橡胶增塑剂的新型有机硅化合物。 本发明还涉及以高产率和纯度制备这些化合物的方法以及使用本发明化合物作为增塑剂制备填充的可固化有机硅氧烷组合物的方法。

公开(公告)号：US5254606A

公开(公告)日：1993-10-19

申请号：US758030

申请日：1991-09-12

申请人： Ryuzo Mikami ,  Tadashi Okawa

发明人： Ryuzo Mikami ,  Tadashi Okawa

IPC分类号： C08G77/445 ,  C09D183/10 ,  C08K5/54

CPC分类号： C09D183/10 ,  C08G77/445

摘要： A graft type silicone-modified polyester forms a base for a surface-protective agent which has excellent water-repellency properties as well as retention of said properties after exposure to the environment.

摘要翻译： 接枝型硅氧烷改性聚酯形成表面保护剂的底物，其具有优异的防水性能以及在暴露于环境之后保留所述性能。

公开(公告)号：US5223596A

公开(公告)日：1993-06-29

申请号：US919516

申请日：1992-07-24

申请人： Tadashi Okawa ,  Shuji Yamada

发明人： Tadashi Okawa ,  Shuji Yamada

IPC分类号： C08G77/04 ,  C08G77/06 ,  C08G77/08 ,  C08G77/38 ,  C08G77/388 ,  C08G77/44

CPC分类号： C08G77/388 ,  C08G77/38 ,  C08G77/44

摘要： A diphenylsiloxane-dimethylsiloxane copolymer that contains at least one organofunctional group at its molecular chain terminals, wherein said organofunctional group is bonded to the silicon atom across a divalent organic group and wherein said organofunctional group is selected from the set comprising the amino group, epoxy group, carboxyl group, and hydroxyl group and a method for the preparation of the copolymer.

公开(公告)号：US5183912A

公开(公告)日：1993-02-02

申请号：US832152

申请日：1992-02-06

申请人： Tadashi Okawa

发明人： Tadashi Okawa

IPC分类号： C07F7/18 ,  C07F7/08 ,  C08G77/04 ,  C08G77/38

CPC分类号： C07F7/0858 ,  C08G77/045 ,  C08G77/38

摘要： An organopentasiloxane having the formulaA--R.sup.1 --SiMe.sub.2 (OSiMe.sub.2).sub.3 OSiR.sup.2 .sub.(3-n) (OR.sup.2).sub.nwherein Me denotes a methyl radical; A is a group selected from the group consisting of methacryloxy, glycidoxy and amino; R.sup.1 is a divalent organic group selected from the group consisting of an alkylene group having at least 2 carbon atoms and an alkyleneoxyalkylene group; R.sup.2 is independently selected from monovalent hydrocarbon groups free of aliphatically unsaturated bonds; and n is an integer having a value of 1 to 3, and methods for the preparation thereof, are disclosed.

公开(公告)号：US5177160A

公开(公告)日：1993-01-05

申请号：US745773

申请日：1991-08-16

申请人： Ryuzo Mikami ,  Makoto Yoshitake ,  Tadashi Okawa

发明人： Ryuzo Mikami ,  Makoto Yoshitake ,  Tadashi Okawa

IPC分类号： C08G63/695 ,  C08G77/445

CPC分类号： C08G63/6954 ,  C08G77/445

摘要： An organopolysiloxane graft-type polyester is prepared by reacting, in the presence of an effective amount of a hydrosilylation catalyst, a polyester containing at least one alkenyl group and having no unsaturated terminal groups, said polyester having a number average molecular weight of about 500 to about 5,000, and an organopolysiloxane containing one hydrosilyl group. The organopolysiloxane graft-type polyester has excellent compatibility with polyesters and can improve the surface smoothness and hydrophobic property of the polyester when modified therewith.

摘要翻译： 有机聚硅氧烷接枝型聚酯通过在有效量的氢化硅烷化催化剂存在下含有至少一个烯基并且不具有不饱和端基的聚酯反应来制备，所述聚酯的数均分子量为约500〜 约5,000，和含有一个氢化甲硅烷基的有机聚硅氧烷。 有机聚硅氧烷接枝型聚酯与聚酯具有优异的相容性，并且可以在改性时改善聚酯的表面平滑性和疏水性。

公开(公告)号：US5175328A

公开(公告)日：1992-12-29

申请号：US890744

申请日：1992-05-28

申请人： Tadashi Okawa ,  Shuji Yamada

发明人： Tadashi Okawa ,  Shuji Yamada

IPC分类号： C08G77/06 ,  C08G77/12 ,  C08G77/48 ,  C08G77/50

CPC分类号： C08G77/12 ,  C08G77/50

摘要： There is disclosed a novel method for the preparation of an organopolysiloxane which has two or three diorganohydrogensiloxy groups at one and only one end of the molecular chain terminal. The method of the invention is particularly useful in that it produces high yields of the desired organopolysiloxane. The method comprises causing a condensation reaction between (A) a hydrogen or lithium terminated polysiloxane and (B) an organopolysiloxane having two or three diorganohydrogensiloxy groups at one terminal of the molecular chain and a halogen at the other terminal of the molecular chain.

公开(公告)号：US5169920A

公开(公告)日：1992-12-08

申请号：US687352

申请日：1991-04-18

申请人： Tadashi Okawa

发明人： Tadashi Okawa

IPC分类号： C08G77/06 ,  C08G77/08

CPC分类号： C08G77/08 ,  C08G77/06

摘要： The molecular weight of diphenylsiloxane-dimethylsiloxane copolymers can be controlled and the desired copolymers obtained in high yield when mixtures of hexaphenylcyclotrisiloxane and hexamethylcyclotrisiloxane are polymerized in a suitable aprotic solvent using a specified class of lithium silanolates as the polymerization initiator and a low molecular weight silanol-terminated polydiorganosiloxane as a molecular weight regulator, and the polymerization reaction is terminated when from 85 to 100 percent of the cyclosiloxanes are converted to said copolymer and prior to any substantial equilibration of the copolymer.