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1. 发明授权

US6136996A Catalysts for polycondensation and redistribution of organosiloxane polymers 失效
标题翻译：有机硅氧烷聚合物的缩聚和再分布的催化剂
公开(公告)号：US6136996A
公开(公告)日：2000-10-24
申请号：US573218
申请日：1995-12-13
申请人： Slawomir Rubinsztajn , Patricia P. Anderson , Dennis P. Thompson
发明人： Slawomir Rubinsztajn , Patricia P. Anderson , Dennis P. Thompson
IPC分类号： C07F7/08 , C08G77/08 , C08G77/10 , C08G77/395 , C08G79/02
CPC分类号： C08G77/395 , C08G77/08 , C08G77/10
摘要： A mixture of a short chain linear phosphazene having the formula:X.sub.3-p (HO).sub.p P(NPX2).sub.m NP(O)X.sub.2,where X is a halogen selected from the group consisting of F, Cl, Br, and I, and m is an integer ranging from 0 to 6 and p is 0 or 1; anda linear sifoxane having a viscosity ranging from 1 to 5,000 centistokes is a catalyst for the polymerization, condensation, or redistribution of siloxanes; the process of making the catalyst and the process of using the catalyst.
摘要翻译：具有下式的短链线性磷腈的混合物：X3-p（HO）pP（NPX2）mNP（O）X2，其中X是选自F，Cl，Br和I的卤素，m 为0〜6的整数，p为0或1; 并且粘度范围为1至5,000厘沲的线性硅氧烷是用于硅氧烷的聚合，缩合或再分布的催化剂; 制备催化剂的方法和使用催化剂的方法。

2. 发明授权

US5420221A Process for the production of linear organosiloxane polymers by disproportionation 失效
标题翻译：通过歧化生产线性有机硅氧烷聚合物的方法
公开(公告)号：US5420221A
公开(公告)日：1995-05-30
申请号：US92450
申请日：1993-07-15
申请人： John S. Razzano , Dennis P. Thompson , Patricia P. Anderson , Slawomir Rubinstajn
发明人： John S. Razzano , Dennis P. Thompson , Patricia P. Anderson , Slawomir Rubinstajn
IPC分类号： C07F7/08 , C08G77/04 , C08G77/06 , C08G77/08 , C08G77/10 , C08G77/12
CPC分类号： C08G77/12 , C07F7/0874 , C08G77/045 , C08G77/08 , C08G77/10
摘要： A process disclosed for the production of organosiloxanes which is based on the use of a judiciously selected catalyst, e.g., a phosphorus-nitrogen homopolymeric or oligomeric compound, a derivative thereof, a complex thereof, sulfuric acid, a fluorinated alkane sulfonic acid, a kaolin clay, or a mixture of any of the foregoing, to disproportionate or to condense and disproportionate a mixture of two different organosiloxanes which have different molecular weights, without, at the same time, increasing the cyclics content of the mixture.
摘要翻译：用于生产有机硅氧烷的方法，其基于使用明智选择的催化剂，例如磷 - 氮均聚或低聚化合物，其衍生物，其络合物，硫酸，氟化烷烃磺酸，高岭土粘土或任何上述物质的混合物，使不同比例的或不相称的两种不同分子量的不同有机硅氧烷的混合物不相称或不成比例，而不会同时增加混合物的循环含量。

3. 发明授权

US5408025A Synthesis of low silanol content, triorgano-stopped silicone fluids 失效
标题翻译：合成低硅烷醇含量，三有机阻止的硅氧烷流体
公开(公告)号：US5408025A
公开(公告)日：1995-04-18
申请号：US91898
申请日：1993-07-15
申请人： Dennis P. Thompson , Patricia P. Anderson , Donald Slick
发明人： Dennis P. Thompson , Patricia P. Anderson , Donald Slick
IPC分类号： C08G77/06 , C08G77/08 , C08G77/16
CPC分类号： C08G77/16 , C08G77/06 , C08G77/08 , Y02P20/582
摘要： Linear triorganosiloxy-terminated polydiorganosiloxanes having a silanol content of less than about 200 ppm are prepared by condensing linear higher molecular weight polydiorganopolysiloxanediols having one Si-bonded hydroxyl group in each terminal unit and a silanol content of preferably greater than about 1000, in two separate stages, one using a fixed bed of a solid form of a conventional equilibration catalyst, and the other using a condensation/disproportionation catalyst, e.g., a phosphonitrilic halide or an oligomer thereof or a reaction product thereof with water, an alcohol, an acid, or a siloxane or silane, until the polydiorganosiloxane has reached the desired low content of silanol groups, e.g., below 200 ppm, by weight. The two stages can be carried out in either order, and a conventional monofunctional chain terminating agent can be present in either or both stages. The process preferably does not increase the cyclic byproduct content.
摘要翻译：具有小于约200ppm的硅烷醇含量的线性三有机甲硅烷氧基封端的聚二有机硅氧烷通过在两个单独的阶段中将具有一个Si键合的羟基的线性较高分子量的聚二有机基聚硅氧烷二醇与每个末端单元中的硅烷醇含量优选大于约1000 使用固体形式的常规平衡催化剂的固定床，另一种使用缩合/歧化催化剂，例如膦酰氯或其低聚物或其与水，醇，酸或其盐的反应产物硅氧烷或硅烷，直到聚二有机硅氧烷达到所需的低含量硅烷醇基团，例如低于200ppm重量。两个阶段可以以任何顺序进行，常规的单官能链终止剂可以在两个或两个阶段中存在。该方法优选不增加循环副产物含量。

4. 发明授权

US5534608A Synthesis of low silanol content, triorgano-stopped silicone fluids 失效
公开(公告)号：US5534608A
公开(公告)日：1996-07-09
申请号：US380267
申请日：1995-01-30
申请人： Dennis P. Thompson , Patricia P. Anderson , Donald Slick
发明人： Dennis P. Thompson , Patricia P. Anderson , Donald Slick
IPC分类号： C08G77/06 , C08G77/08 , C08G77/16
CPC分类号： C08G77/16 , C08G77/06 , C08G77/08 , Y02P20/582
摘要： Linear triorganosiloxy-terminated polydiorganosiloxanes having a silanol content of less than about 200 ppm are prepared by condensing linear higher molecular weight polydiorganopolysiloxanediols having one Si-bonded hydroxyl group in each terminal unit and a silanol content of preferably greater than about 1000, in two separate stages, one using a fixed bed of a solid form of a conventional equilibration catalyst, and the other using a condensation/disproportionation catalyst, e.g., a phosphonitrilic halide or an oligomer thereof or a reaction product thereof with water, an alcohol, an acid, or a siloxane or silane, until the polydiorganosiloxane has reached the desired low content of silanol groups, e.g., below 200 ppm, by weight. The two stages can be carried out in either order, and a conventional monofunctional chain terminating agent can be present in either or both stages. The process preferably does not increase the cyclic byproduct content.

5. 发明授权

US5616673A Process for production of low viscosity low silanol content silicone fluids 失效
标题翻译：生产低粘度低硅烷醇含量硅油的方法
公开(公告)号：US5616673A
公开(公告)日：1997-04-01
申请号：US572232
申请日：1995-12-13
申请人： Patricia P. Anderson , Dennis P. Thompson
发明人： Patricia P. Anderson , Dennis P. Thompson
IPC分类号： C08G77/06 , C08G77/08 , C08G77/12
CPC分类号： C08G77/12 , C08G77/06 , C08G77/08
摘要： Use of a certain class of acid washed clays enables a fixed bed process for the production of very low viscosity low silanol content silicone fluids to be produced in a fixed bed single reactor process.
摘要翻译：使用一定类型的酸洗粘土使固定床工艺能够在固定床单反应器工艺中生产非常低粘度的低硅烷醇含量硅氧烷流体。

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