Curable silicone release composition and release sheet
    1.
    发明授权
    Curable silicone release composition and release sheet 失效
    可固化的硅氧烷防粘组合物和脱模片

    公开(公告)号:US5942591A

    公开(公告)日:1999-08-24

    申请号:US879053

    申请日:1997-06-19

    CPC分类号: C09D183/04

    摘要: A solventless curable silicone release composition contains (A) a branched organopolysiloxane having a vinyl group attached to a silicon atom at an end of its molecular chain, (B) an organohydrogenpolysiloxane having at least three SiH groups in a molecule, and (C) a platinum group metal catalyst. The composition is easily applicable to a thin gage and cures into a releasable silicone coating ensuring light release at high speeds. A release sheet having the cured coating formed thereon has improved release characteristics.

    摘要翻译: 无溶剂固化性有机硅剥离组合物含有(A)在其分子链末端具有与硅原子相连的乙烯基的支链有机聚硅氧烷,(B)分子中具有至少三个SiH基的有机氢聚硅氧烷,(C) 铂族金属催化剂。 该组合物易于应用于薄规格并固化成可释放的硅氧烷涂层,确保高速下的光释放。 具有形成在其上的固化涂层的剥离片具有改善的剥离特性。

    Organopolysiloxane composition
    2.
    发明授权
    Organopolysiloxane composition 有权
    有机聚硅氧烷组合物

    公开(公告)号:US06277941B1

    公开(公告)日:2001-08-21

    申请号:US09448282

    申请日:1999-11-24

    IPC分类号: C08G7708

    CPC分类号: C09D183/04 C08L2666/44

    摘要: An organopolysiloxane composition comprising (1) 100 parts by weight of an organopolysiloxane having at least two unsaturated groups per molecule, (2) 0.1-30 parts by weight of a liquid organohydrogenpolysiloxane having at least two hydrogen atoms attached directly to silicon atoms (≡Si—H bonds) per molecule, (3) 0.1-6.0 parts by weight of an addition reaction control agent prepared by mixing (a) an acetylene alcohol and (b) a silylated acetylene alcohol in a (b)/(a) ratio ranging from greater than 5 to no greater than 100 on a weight basis, and (4) a catalytic amount of a platinum metal catalyst.

    摘要翻译: 一种有机聚硅氧烷组合物,其包含(1)100重量份的每分子具有至少两个不饱和基团的有机聚硅氧烷,(2)0.1-30重量份具有至少两个氢原子的液态有机氢聚硅氧烷,其直接与硅原子(= Si -H键),(3)0.1-6.0重量份加成反应控制剂,其通过将(a)乙炔醇和(b)甲硅烷基化乙炔醇以(b)/(a)比范围 以重量计大于5至不大于100,和(4)催化量的铂金属催化剂。

    Curable organopolysiloxane composition
    3.
    发明授权
    Curable organopolysiloxane composition 失效
    固化有机聚硅氧烷组合物

    公开(公告)号:US5691434A

    公开(公告)日:1997-11-25

    申请号:US756917

    申请日:1996-12-02

    CPC分类号: C08L83/06 C09D183/06

    摘要: There is provided a curable organopolysiloxane composition comprising (A) an organopolysiloxane containing, in its molecule, at least two groups represented by the general formula (1): CH.sub.2 .dbd.CH--(CH.sub.2).sub.a --(OC.sub.b H.sub.2b).sub.c --O--(1) wherein a is an integer of 1 to 8, b is an integer of 2 to 4, and c is an integer of 0 to 3; (B) an organohydrogenpolysiloxane containing, in its molecule, at least two hydrogen atoms each bonded to a silicon atom; (C) an addition-reaction retarder; and (D) a platinum family metal catalyst. The composition is fast in curing speed and superior in curing stability.

    摘要翻译: 提供了一种可固化的有机基聚硅氧烷组合物,其包含(A)在其分子中含有由通式(1)表示的至少两个基团的有机聚硅氧烷:有机聚硅氧烷:CH 2 = CH-(CH 2)a - (OC b H b b)c O-(1)其中 a为1〜8的整数,b为2〜4的整数,c为0〜3的整数。 (B)在其分子中含有至少两个各自键合到硅原子上的氢原子的有机氢聚硅氧烷; (C)加成反应缓凝剂; 和(D)铂族金属催化剂。 组合物的固化速度快,固化稳定性优异。

    Novel radiation-curable polymeric composition containing a
diorganopolysiloxane with (meth)acryloxy end groups
    4.
    发明授权
    Novel radiation-curable polymeric composition containing a diorganopolysiloxane with (meth)acryloxy end groups 失效
    含有具有(甲基)丙烯酰氧基端基的二有机聚硅氧烷的新型可辐射固化聚合物组合物

    公开(公告)号:US5075349A

    公开(公告)日:1991-12-24

    申请号:US529927

    申请日:1990-05-29

    CPC分类号: C09J4/06 C08F290/068

    摘要: A radiation-curable surface-releasing agent is proposed which is capable of giving surface releasability to a substrate surface by irradiation with electron beams or ultraviolet light exhibiting outstandingly low peeling resistance against peeling of pressure-sensitive adhesive tapes applied and bonded to the release-treated surface and very small migration of the releasing ingredient toward the adhesive surface. The surface-releasing agent is a composition comprising a linear diorganopolysiloxane having, only at one of the molecular chain ends, at least one (meth)acryloxy groups and a poly(meth)acrylate compound such as trimethylol propane tri(meth)acrylate, diethylene glycol di(meth)acrylate, pentaerithritol tri(meth)acrylate and the like.

    摘要翻译: 提出了一种可辐射固化的表面释放剂,其能够通过用电子束或紫外线照射给基材表面提供表面可剥离性,该紫外线表现出显着低的抗剥离性,从而剥离施加并结合到脱模处理过的粘合带 表面和释放成分向粘合剂表面的非常小的迁移。 表面释放剂是包含直链二有机聚硅氧烷的组合物,其仅在一个分子链末端具有至少一个(甲基)丙烯酰氧基和聚(甲基)丙烯酸酯化合物,如三(甲基)丙烯酸三羟甲基丙酯,二亚乙基 乙二醇二(甲基)丙烯酸酯,季戊四醇三(甲基)丙烯酸酯等。

    Silicone block polymers and their preparation
    9.
    发明授权
    Silicone block polymers and their preparation 失效
    硅酮嵌段聚合物及其制备方法

    公开(公告)号:US5202404A

    公开(公告)日:1993-04-13

    申请号:US673469

    申请日:1991-03-22

    摘要: Silicone block polymers are obtained by cohydrolysis of a both end reactive diorganopolysiloxane and a silane or a partial hydrolyzate thereof or curing a both end reactive diorganopolysiloxane and an organopolysiloxane at room temperature or elevated temperatures. They have improved flexibility, stain resistance, thermal shock resistance, and water repellency and are suitable to form hard coatings, moistureproof coatings and topcoats.

    摘要翻译: 硅酮嵌段聚合物通过在室温或升高的温度下通过双端活性二有机聚硅氧烷和硅烷或其部分水解产物的共水解或固化两端反应性二有机聚硅氧烷和有机聚硅氧烷获得。 它们具有改善的柔韧性,耐污染性,耐热冲击性和防水性,并且适用于形成硬涂层,防潮涂料和面漆。

    Method for improving mold releasability of a polymeric material
    10.
    发明授权
    Method for improving mold releasability of a polymeric material 失效
    提高聚合物材料脱模性的方法

    公开(公告)号:US4617335A

    公开(公告)日:1986-10-14

    申请号:US758149

    申请日:1985-07-23

    CPC分类号: C08K5/5415

    摘要: The invention provides an efficient method for releasing a shaped body of a polymeric material such as a foamed polyurethane resin from a mold in which the body has been molded without the problem of adhesion to the mold. The inventive method comprises admixing the polymeric material with a specific organopolysiloxane represented by the structural formulaR.sup.1.sub.3 Si--O--SiR.sup.2.sub.2 --O).sub.m (SiR.sup.2 A--O).sub.n SiR.sup.1.sub.3,in which A is a substituent group represented by the general formula --C.sub.x H.sub.2x --O--R, R being a monovalent hydrocarbon group having 8 to 30 carbon atoms but free from terminal unsaturation and x being zero or a positive integer not exceeding 4, R.sup.1 is a monovalent hydrocarbon group or the same group as A, R.sup.2 is a hydrogen atom or the same group as R.sup.1, and m and n are each zero or a positive integer with the proviso that at least one group denoted by A is contained in a molecule of the organopolysiloxane.

    摘要翻译: 本发明提供了一种用于从模具中释放聚合物材料如发泡聚氨酯树脂的成形体的有效方法,其中已经模制了本体,而没有粘附到模具的问题。 本发明的方法包括将聚合物材料与由结构式R 13 Si-O-SiR 22 -O)m(SiR 2 A-O)n SiR 13表示的特定有机聚硅氧烷混合,其中A是由通式-C x H 2 x -OR表示的取代基, R为碳原子数为8〜30,不含末端不饱和单价烃基,x为零或不超过4的正整数,R1为单价烃基或与A相同的基团,R2为氢原子或相同 基团为R 1,m和n各自为零或正整数,条件是由A表示的至少一个基团包含在有机聚硅氧烷的分子中。