Reduction of silicone foam density using buffers
    11.
    发明授权
    Reduction of silicone foam density using buffers 失效
    使用缓冲液降低硅氧烷泡沫密度

    公开(公告)号:US5011865A

    公开(公告)日:1991-04-30

    申请号:US503355

    申请日:1990-04-02

    申请人: Donald S. Johnson

    发明人: Donald S. Johnson

    摘要: A method is provided for preparing a silicon foam having reduced density of about 5 to about 6 pounds per cubic foot, comprising the step of agitating a mixture of ingredients comprising (A) a silicon composition, comprising by weight: (1) 100 parts of a vinyl-terminated polydiorganosiloxane (2) about 0.5 to about 5 parts by weight of an aqueous buffer solution having a pH in the range of about 9 to about 10; and (3) about 25 to about 140 parts per million of a platinum catalyst; (B) about 2.5 to about 20 parts of a substantially linear hydride polysiloxane (C) about 0.1 to about 15 parts of a cyclic hydride polysiloxane; and (D) about 0.1 to about 5 parts of a hydroxyl source selected from the group consisting of water, organic alcohol, or a mixture of the foregoing.

    Method of making torsional vibration damper having a roll spun housing
    12.
    发明授权
    Method of making torsional vibration damper having a roll spun housing 失效
    制造具有辊纺壳体的扭转振动阻尼器的方法

    公开(公告)号:US4953778A

    公开(公告)日:1990-09-04

    申请号:US363621

    申请日:1989-06-08

    摘要: A viscous torsional vibration damper of the kind operating on the shear film principle has a roll spun annular channel shaped housing providing an annular working chamber within which is mounted an annular complementary inertia mass ring and a viscous damping fluid substantially fills shear film spaces between the working surfaces of the inertia ring and confronting working surfaces of the housing within the chamber. Working surface area of the housing within the working chamber has a spinning roll burnished finish. A roll formed rabbet provides a shoulder seat on one wall of the housing with an edge portion of a closure sealed thereto. Laser welding permanently secures the closure to the housing.

    摘要翻译: 在剪切膜原理上操作的粘性扭转振动阻尼器具有提供环形工作室的辊旋式环形通道形壳体,其中安装有环形互补的惯性质量环,并且粘性阻尼流体基本上填充工作中的剪切膜空间 惯性环的表面和壳体在腔室内的相对工作表面。 工作室内的工作表面积有一个纺纱辊抛光面。 辊式成形的椽子在壳体的一个壁上提供一个肩座,其中密封在其上的封闭件的边缘部分。 激光焊接将封盖永久地固定在外壳上。

    Accelerator for anhydride-cured epoxy resins
    13.
    发明授权
    Accelerator for anhydride-cured epoxy resins 失效
    酸酐固化环氧树脂加速剂

    公开(公告)号:US4398013A

    公开(公告)日:1983-08-09

    申请号:US311269

    申请日:1981-10-14

    申请人: Donald S. Johnson

    发明人: Donald S. Johnson

    IPC分类号: C08G59/42 C08G59/68

    CPC分类号: C08G59/42 C08G59/68

    摘要: An improved process for curing a polyepoxide composition with a polycarboxylic acid or polycarboxylic acid anhydride is described wherein the addition of a diphenyliodonium salt accelerator provides for shortened curing reaction times at lower reaction temperatures or at room temperatures if the composition is exposed to a source of ultraviolet radiation.

    摘要翻译: 描述了用聚羧酸或多元羧酸酐固化聚环氧化物组合物的改进方法,其中加入二苯基碘鎓盐促进剂在较低的反应温度或室温下提供缩短的固化反应时间,如果该组合物暴露于紫外线源 辐射。

    Reduction of silicone foam density using buffers
    15.
    发明授权
    Reduction of silicone foam density using buffers 失效
    使用缓冲液降低硅氧烷泡沫密度

    公开(公告)号:US5071885A

    公开(公告)日:1991-12-10

    申请号:US570236

    申请日:1990-08-20

    申请人: Donald S. Johnson

    发明人: Donald S. Johnson

    IPC分类号: C08J9/02 C08L83/04

    摘要: A method is provided for preparing a silicone foam having reduced density of about 5 to about 6 pounds per cubic foot, comprising the step of agitating a mixture of ingredients comprising (A) a silicone composition, comprising by weight: (1) 100 parts of a vinyl-terminated polydiorganosiloxane (2) about 0.5 to about 5 parts by weight of an aqueous buffer solution having a pH in the range of about 9 to about 10; and (3) about 25 to about 140 parts per million of a platinum catalyst; (B) about 2.5 to about 20 parts of a substantially linear hydride polysiloxane (C) about 0.1 to about 15 parts of a cyclic hydride polysiloxane; and (D) about 0.1 to about 5 parts of a hydroxyl source selected from the group consisting of water, organic alcohol, or a mixture of the foregoing.

    摘要翻译: 提供了一种制备具有约5至约6磅/立方英尺的密度降低的硅氧烷泡沫的方法,其包括搅拌包含(A)有机硅组合物的成分的混合物的步骤,该有机硅组合物包含:(1)100份 乙烯基封端的聚二有机硅氧烷(2)约0.5至约5重量份的pH在约9至约10范围内的缓冲水溶液; 和(3)约25至约140ppm的铂催化剂; (B)约2.5至约20份基本上为线性的氢化物聚硅氧烷(C)约0.1至约15份的环状氢化物聚硅氧烷; 和(D)约0.1至约5份选自水,有机醇或上述混合物的羟基源。

    Reduction of silicone foam density using buffers
    16.
    发明授权
    Reduction of silicone foam density using buffers 失效
    使用缓冲液降低硅氧烷泡沫密度

    公开(公告)号:US5017624A

    公开(公告)日:1991-05-21

    申请号:US597253

    申请日:1990-10-15

    申请人: Donald S. Johnson

    发明人: Donald S. Johnson

    IPC分类号: C08J9/02

    CPC分类号: C08J9/02 C08J2383/04

    摘要: A method is provided for preparing a silicone foam having reduced density of about 5 to about 6 pounds per cubic foot, comprising the step of agitating a mixture of ingredients comprising (A) a silicon composition, comprising by weight: (1) 100 parts of a vinyl-terminated polydiorganosiloxane (2) about 0.5 to about 5 parts by weight of an aqueous buffer solution having a pH in the range of about 9 to about 10; and (3) about 25 to about 140 parts per million of a platinum catalyst; (8) about 2.5 to about 20 parts of a substantially linear hydride polysiloxane (C) about 0.1 to about 15 parts of a cyclic hydride polysiloxane; and (D) about 0.1 to about 5 parts of a hydroxyl source selected from the group consisting of water, organic alcohol, or a mixture of the foregoing.

    摘要翻译: 提供了一种用于制备密度为约5至约6磅/立方英尺的密度降低的硅氧烷泡沫的方法,包括搅拌包含(A)硅组合物的成分混合物的步骤,该组合物包含:(1)100份 乙烯基封端的聚二有机硅氧烷(2)约0.5至约5重量份的pH在约9至约10范围内的缓冲水溶液; 和(3)约25至约140ppm的铂催化剂; (8)约2.5至约20份基本上为线性的氢化物聚硅氧烷(C)约0.1至约15份的环状氢化物聚硅氧烷; 和(D)约0.1至约5份选自水,有机醇或上述混合物的羟基源。

    Method for making aromatic cyclic polyformal
    18.
    发明授权
    Method for making aromatic cyclic polyformal 失效
    制备芳族环状聚甲醛的方法

    公开(公告)号:US4163833A

    公开(公告)日:1979-08-07

    申请号:US905635

    申请日:1978-05-15

    申请人: Donald S. Johnson

    发明人: Donald S. Johnson

    IPC分类号: C08G4/00 C08G65/40

    摘要: There is provided, a method for making cyclic poly-formal substantially free of linear polyformal by agitating a plural phase mixture of an aqueous alkali metal salt solution of bisphenol in contact with methylene halide and a phase transfer catalyst. The cyclic polyformal can be used to make wire coating compositions.

    摘要翻译: 提供了通过搅拌与二卤甲烷接触的双酚的碱金属盐水溶液和相转移催化剂的多相混合物来制备基本上不含线性聚甲醛的环状聚甲醛的方法。 环状聚甲醛可用于制造线涂组合物。