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    • 3. 发明授权
    • Liquid polysiloxanes
    • 液体聚硅氧烷
    • US5674938A
    • 1997-10-07
    • US358583
    • 1994-12-13
    • Holger RautschekRosemarie GuehneHarald Schickmann
    • Holger RautschekRosemarie GuehneHarald Schickmann
    • B01D19/04B29C33/64C08G77/02C08G77/04C08G77/06C08G77/08C08G77/10C08G77/44C08J3/02C08J3/18C09K8/035C08K3/00
    • B01D69/10B29C33/64C08G77/06C08G77/08C09K8/035
    • Liquid polysiloxanes are used in defoamant preparations, as diffusion-resistant plasticizer oils, separation agents, or impregnation agents. The liquid polysiloxanes are obtained by reacting: (1) 100 parts by weight of the hydrolysis product of dimethyldichlorosilane having a viscosity of less than 200 mm.sup.2 /sec at 25.degree. C.; (2) 1-100 parts by weight of a polydiorganosiloxane having a viscosity of less than 200 mm.sup.2 /sec at 25.degree. C., of formula (I) R.sup.3.sub.c SiO.sub.(4-c)/2, (I) where each R.sup.3 is independently a substituted or unsubstituted hydrocarbon group with 1-30 carbon atoms, and c has mean value 1.9-3.0; and (3) 0.1-20 parts by weight of one or more compounds (a)-(d), where (a) is a silicon compound of formula (II) R.sup.4.sub.d SiX.sub.(4-d), (II) where R.sup.4 is a substituted or unsubstituted hydrocarbon group with 1-10 carbon atoms, X is a hydrolyzable group, and d is a number between 0 and 1; (b) is a partial hydrolyzate of (a); (c) is a silicone resin comprised essentially of units of (CH.sub.3).sub.3 SiO.sub.1/2 and SiO.sub.2, in a ratio in the range of 2:1 to 1:2; and (d) is a pyrogenic or precipitated hydrophilic silicic acid with a BET surface area of 50-400 m.sup.2 /g; in the presence of a catalytically effective amount of a catalyst which accelerates the reaction of compounds (1)-(3).
    • 液体聚硅氧烷用作消泡剂制剂,作为扩散性增塑剂油,分离剂或浸渍剂。 液体聚硅氧烷是通过以下方法获得的:(1)在25℃下粘度小于200mm 2 /秒的100重量份的二甲基二氯硅烷的水解产物。 (2)1-100重量份在25℃下粘度小于200mm 2 / sec的式(I)R 3 c SiO(4-c)/ 2,(I)的聚二有机硅氧烷,其中每个R 3独立地为 取代或未取代的具有1-30个碳原子的烃基,c的平均值为1.9-3.0; 和(3)0.1-20重量份的一种或多种化合物(a) - (d),其中(a)是式(II)的硅化合物R4dSiX(4-d),(II)其中R4是 具有1-10个碳原子的取代或未取代的烃基,X是可水解基团,d是0和1之间的数; (b)是部分水解产物(a); (c)是基本上由(CH3)3SiO + E,fra1 / 2 + EE和SiO2的单元组成的有机硅树脂,其比例为2:1至1:2; 和(d)是BET表面积为50-400m2 / g的热原或沉淀亲水性硅酸; 在催化有效量的催化剂的存在下,加速化合物(1) - (3)的反应。
    • 8. 发明授权
    • Suspension for the solvent-free production of silicone resin-bonded
papers based on sheet silicates
    • 悬浮液用于无硅胶树脂粘合纸的无溶剂生产
    • US6017995A
    • 2000-01-25
    • US73910
    • 1998-05-07
    • Guenter BeuschelHolger Rautschek
    • Guenter BeuschelHolger Rautschek
    • D21H13/36D21H13/44D21H17/13D21H17/59D21H21/34D21H23/04C08L83/00
    • D21H13/44D21H17/13D21H17/59D21H23/04
    • A suspension for the solvent-free production of silicone resin-bonded papers based on sheet silicates, which consists of:(a) 100 parts by weight of a sheet silicate,(b) 100 to 10,000 parts by weight of water,(c) 0.1 to 5 parts by weight of at least one silane of formula (I):(R'O).sub.a SiR.sub.4-a (I) in which R denotes substituted or unsubstituted hydrocarbon radicals having 1 to 20 carbon atoms and R' denotes C.sub.1-10 -alkyl, aryl, alkylaryl or hydrogen and a assumes a value from 1 to 3, and/or the partial hydrolysis product thereof,(d) 1 to 50 parts by weight of a pulverulent silicone resin of formula (II):(R'O).sub.b SiR.sub.C O.sub.(4-b-c)/2 (II) in which R and R.sup.1 have the abovementioned meaning and b assumes a value from 0 to 0.5 and c a value from 0.7 to 1.3, with the proviso that at least 5 parts by weight of the silicone resin of formula (II) are used per part by weight of the compound of formula (I),(e) 0.01 to 20 parts by weight of a compound catalyzing the hydrolysis and/or condensation of the compounds of formulae (I) and/or (II) and(f) optionally further known additives.
    • 一种用于无溶剂生产基于片状硅酸盐的有机硅树脂粘合纸的悬浮液,其由以下组成:(a)100重量份的片状硅酸盐,(b)100至10,000重量份的水,(c) 0.1至5重量份的至少一种式(I)的硅烷:(R'O)aSiR 4-a(I)其中R表示取代或未取代的具有1至20个碳原子的烃基,R'表示C1-10 - 烷基,芳基,烷基芳基或氢,并且其值为1至3,和/或其部分水解产物,(d)1至50重量份的式(II)的粉状有机硅树脂:(R' O)bSiRCO(4-bc)/ 2(II),其中R和R 1具有上述含义,b表示0至0.5的值,ca值为0.7至1.3,条件是至少5重量份 式(II)的有机硅树脂按每重量份式(I)化合物使用,(e)0.01至20重量份催化水解和/或冷凝的化合物 式(I)和/或(II)和(f)任选的另外已知的添加剂。