Method for preparing polyorganosiloxanes (pos) by polycondensation/redistribution of oligosiloxanes in the presence of a strong base and strong bases used
    11.
    发明申请
    Method for preparing polyorganosiloxanes (pos) by polycondensation/redistribution of oligosiloxanes in the presence of a strong base and strong bases used 审中-公开
    在强碱和强碱的存在下,通过缩聚/再分布低聚硅氧烷制备聚有机硅氧烷(pos)的方法

    公开(公告)号:US20050080215A1

    公开(公告)日:2005-04-14

    申请号:US10497756

    申请日:2002-12-13

    摘要: The invention concerns the synthesis of silicone by anionic polymerisation of cyclic organosiloxane oligomers in the presence of a slightly nucleophilic strong base. The invention aims at providing novel strong base catalysts, more efficient in terms of solubility in the silicones, with hydrolysis stability strength and polymerising capacity. To achieve this, the invention provides for the use of ylides derived from aminophosphonium such as for example that of formula: [Me3N)3P—CHMe2]+, MeO or derived from phosphoranylidenes such as that of formula: [Me3P—HC=Pme3]+, t-BuO. The invention also concerns strong base catalysts as novel products.

    摘要翻译: 本发明涉及通过在轻微亲核的强碱存在下通过环状有机硅氧烷低聚物的阴离子聚合来合成硅氧烷。 本发明旨在提供新的强碱催化剂,在硅氧烷中的溶解度方面更有效,具有水解稳定性强度和聚合能力。 为了实现这一点,本发明提供了使用衍生自氨基鏻的内鎓盐,例如式:[Me 3 N)3 P-CHMe 2] +,MeO或衍生自如下式的亚正膦的衍生物:[Me 3 P-HC = Pme 3] +,t-BuO。 本发明还涉及作为新产品的强碱催化剂。

    Boron/nitrogen preceramic polymers and boron nitride ceramic materials
produced therefrom
    13.
    发明授权
    Boron/nitrogen preceramic polymers and boron nitride ceramic materials produced therefrom 失效
    BORON / NITROGEN PRECERAMIC POLYMERS和BORON NITRIDE CERAMIC MATERIALS PRODUCER THEREFROM

    公开(公告)号:US5071935A

    公开(公告)日:1991-12-10

    申请号:US418193

    申请日:1989-10-06

    CPC分类号: C08G79/08

    摘要: Organometallic boron/nitrogen polymers, precursors of boron nitride, include recurring structural units of the formulae (I) and (II): ##STR1## wherein X is N-R.sup.3, Y is NR.sup.1 R.sup.2 and Z is N-R, in which R, R.sup.1, R.sup.2 and R.sup.3, which may be identical or different, are each a hydrogen atom, an optionally substituted hydrocarbon radical, or an organosilyl or hydrogenoorganosilyl radical and are prepared by reacting (a) at least one cyclic compound (compound A) containing recurring structural units of the formula (1): ##STR2## wherein A is a halogen atom and R is a hydrogen atom, an optionally substituted hydrocarbon radical, or an organosilyl or hydrogenoorganosilyl radical, with (b) at least one compound including at least one boron atom to which two halogen atoms are directly bonded (compound B), and (c) at least one compound containing at least one NH.sub.2 group compound C); the resulting organometallic polymers are facilely pyrolyzed into boron nitride ceramic materials.

    摘要翻译: 有机金属硼/氮聚合物,氮化硼的前体包括式(I)和(II)的重复结构单元:其中X是N-R 3,Y是NR 1 R 2,和 Z是NR,其中R,R 1,R 2和R 3可以相同或不同,各自为氢原子,任选取代的烃基或有机甲硅烷基或氢有机甲硅烷基,并且通过使(a)至少一种 含有式(1)的重复结构单元的环状化合物(化合物A):其中A是卤素原子,R是氢原子,任选取代的烃基或有机甲硅烷基或氢有机甲硅烷基,其中 (b)至少一种包含至少一个与两个卤原子直接键合的硼原子的化合物(化合物B),和(c)至少一种含有至少一个NH 2基团化合物C)的化合物; 所得到的有机金属聚合物易于热解成氮化硼陶瓷材料。

    METHOD FOR PREPARING FUNCTIONALIZED POLYORGANOSILOXANE RESINS BY REDISTRIBUTION IN THE PRESENCE OF AT LEAST ONE TRIFLIC ACID DERIVATIVE
    15.
    发明申请
    METHOD FOR PREPARING FUNCTIONALIZED POLYORGANOSILOXANE RESINS BY REDISTRIBUTION IN THE PRESENCE OF AT LEAST ONE TRIFLIC ACID DERIVATIVE 审中-公开
    通过重新分配在至少一种三聚酸衍生物存在下制备官能化聚硅氧烷树脂的方法

    公开(公告)号:US20080255322A1

    公开(公告)日:2008-10-16

    申请号:US12142384

    申请日:2008-06-19

    IPC分类号: C08G77/38

    CPC分类号: C08G77/08 C08G77/10

    摘要: The present invention relates to a process for preparing functionalized polyorganosiloxane (POS) resins comprising units M: (R3SiO1/2) Q: (SiO4/2) and M′: (YaR3−aSiO1/2) and optionally D: (R2SiO2/2) and/or D′: (RYSiO2/2) and T: (RSiO3/2) and/or T′: (YSiO3/2), with, in these units: R=C1-C10 alkyl or a C8-C12 aryl and Y a functional group (e.g.: Si—H),by redistribution of POS resins using POSf bearing functional units M′ and/or D′ and/or in the presence of an acid catalyst of the trifluoromethane-sulfonimide (TFSI) type.The present invention also relates to the aforementioned catalyst system.

    摘要翻译: 本发明涉及一种制备官能化聚有机硅氧烷(POS)树脂的方法,其包含单元M:(R 3 SiO 2 1/2)Q:(SiO 4 / 2)和M':(Y a a R 3-a SiO 1/2)和任选的D:(R' 和/或D':(RYSiO 2/2)和T:(RS 3 O 3/2) / /> T':(YSiO 3/2/2),在这些单元中:R = C 1 -C 10 >烷基或C 8 -C 12芳基,Y是官能团(例如:Si-H),通过使用POSf承载功能单元M'重新分配POS树脂, /或D'和/或在三氟甲烷 - 磺酰亚胺(TFSI)型的酸催化剂存在下进行。 本发明还涉及上述催化剂体系。

    Tire rubber composition comprising a coupling agent having a polythiosulfenamide function
    16.
    发明申请
    Tire rubber composition comprising a coupling agent having a polythiosulfenamide function 有权
    轮胎橡胶组合物,其包含具有聚亚硫酰胺功能的偶联剂

    公开(公告)号:US20050032949A1

    公开(公告)日:2005-02-10

    申请号:US10870999

    申请日:2004-06-21

    摘要: An elastomeric composition usable for the manufacture of tires, based on at least (i) a diene elastomer, (ii) an inorganic filler as reinforcing filler and (iii), as (inorganic filler/diene elastomer) coupling agent, a organosilicon compound which is at least bifunctional and can be grafted on to the elastomer by means of a sulfur group having a polythiosulfenamide function, of formula: ≡Si-A-Sx—NR1R2,  (I) in which: A is a divalent bond group, whether straight-chain or branched, which makes it possible to join the polythiosulfenamide group to a silicon atom of the organosilicon compound; x is an integer or fractional number of from 2 to 4; R1 represents hydrogen or a monovalent hydrocarbon group; R2 represents a monovalent hydrocarbon group selected from among C3-C8 alkyls, whether straight-chain or branched, C5-C10 cycloalkyls, C6-C18 aryls and (C6-C18)aryl-(C1-C8)alkyls; R1 and R2 possibly forming together and with the nitrogen atom to which they are bonded a single hydrocarbon ring. Tires and tire treads comprising a composition of this type.

    摘要翻译: 可用于制造轮胎的弹性体组合物,至少基于(i)二烯弹性体,(ii)作为增强填料的无机填料和(iii)作为(无机填料/二烯弹性体)偶联剂的有机硅化合物, 至少是双官能的,并且可以通过具有式:Si-A-Sx-NR 1 R 2,(I)的具有聚亚硫酰胺官能团的硫基接枝到弹性体上,其中:A是 无论是直链还是支链的二价键基团,这使得可以将多亚硫酰胺基团连接到有机硅化合物的硅原子; x是2到4的整数或小数; R 1表示氢或一价烃基; R 2表示选自C 3 -C 8烷基,无论是直链还是支链,C5-C10环烷基,C6-C18芳基和(C6-C18)芳基 - (C1-C8)烷基的一价烃基; R 1和R 2可以一起形成,并与它们所键合的氮原子形成单个烃环。 包括这种类型的组合物的轮胎和轮胎胎面。

    Organosilicon compounds
    17.
    发明授权
    Organosilicon compounds 失效
    有机硅化合物

    公开(公告)号:US5214176A

    公开(公告)日:1993-05-25

    申请号:US340778

    申请日:1989-04-20

    CPC分类号: G02F1/3619 C07F7/0821

    摘要: Novel organosilicon compounds having a second order hyperpolarizability coefficient .beta. greater than zero, well suited for use in the field of nonlinear optics, e.g., in telecommunication devices, have the general formula: ##STR1## which n is an integer ranging from 1 to 20; R.sub.1 is an electron donating group; R.sub.2 is an electron accepting group; R.sub.3 is an alkyl radical having from 1 to 8 carbon atoms, a hydrogen atom, an aryl radical, or an R.sub.1 or R.sub.2 radical; and R.sub.4 is an alkyl radical having from 1 to 8 carbon atoms, a hydrogen atom, an aryl radical, or an R.sub.1 radical when R.sub.3 is not an R.sub.2 radical or an R.sub.2 radical when R.sub.3 is not an R.sub.1 radical.

    摘要翻译: 具有二阶超极化率系数β大于零的新型有机硅化合物,非常适合用于非线性光学领域,例如在电信设备中,具有以下通式:其中n是1至20的整数; R1是给电子基团; R2是电子接受基团; R3是具有1至8个碳原子的烷基,氢原子,芳基或R1或R2基团; 当R 3不是R 1基团时,当R 3不是R 2基团或R 2基团时,R 4是具有1至8个碳原子的烷基,氢原子,芳基或R 1基团。

    Low carbon/high purity boron nitride
    19.
    发明授权
    Low carbon/high purity boron nitride 失效
    低碳/高纯度氮化硼

    公开(公告)号:US5021371A

    公开(公告)日:1991-06-04

    申请号:US482073

    申请日:1990-02-20

    摘要: Highly pure boron nitride ceramic material, devoid of silicon values and having low carbon content, is prepared by pyrolyzing, under an atmosphere of ammonia, the product of the reaction between (i) at least one B-trihalogeno-borazole having the formula: ##STR1## and (ii) at least one primary amine having the formula:H.sub.2 N--Rin which formulae X is a halogen atom and R is an optionally substituted hydrocarbon radical having from 1 to 6 carbon atoms.

    摘要翻译: 通过在氨气氛下热解(i)至少一种具有下列结构式的β-三卤代 - 硼唑之间的反应产物,制备无纯硅含量低的碳氮化硼陶瓷材料: 和(ii)至少一种具有下式的伯胺:其中式X是卤素原子,R是具有1至6个碳原子的任选取代的烃基。