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    Preparation of aqueous methylsilsesquioxane dispersions
    2.
    发明授权
    Preparation of aqueous methylsilsesquioxane dispersions 失效
    水性甲基纤维素分散体的制备

    公开(公告)号：US3637560A

    公开(公告)日：1972-01-25

    申请号：US3637560D

    申请日：1967-03-13

    Applicant: DOW CORNING

    Inventor： CEKADA JOSEPH JR

    IPC: C08G77/38 ,  C08G31/12 ,  C08G51/24

    CPC classification number: C08G77/38

    Abstract: STABLE AQUEOUS DISPERSIONS OF METHYLSILSESQUIOXANE ARE PREPARED BY CONTACTING AN ALKALI OR ALKALINE EARTH METAL MONOMETHYLSILICONATE WITH AN ACID CATION EXCHANGE RESIN AND EMPLOYING AN ANIONIC OR CATIONIC SURFACTANT. THE DISPERSION MAY SUBSEQUENTLY BE NEUTRALIZED. THESE DISPERSIONS ARE USEFUL FOR IMPARTING DULLING, ANTISLIP, AND ANTISOILING CHARACTERISTICS TO FABRICS.

    Method for releasing polyurethane foam from a mold
    4.
    发明授权
    Method for releasing polyurethane foam from a mold 失效
    从模具中释放聚氨酯泡沫的方法

    公开(公告)号：US3624190A

    公开(公告)日：1971-11-30

    申请号：US3624190D

    申请日：1967-06-16

    Applicant: DOW CORNING

    Inventor： CEKADA JOSEPH JR ,  REININK EDWIN E

    IPC: C08G77/04 ,  G01S1/02 ,  G01S1/24 ,  G01S19/35 ,  B29D27/04 ,  C08G22/04 ,  C08G22/46

    CPC classification number: G01S1/24 ,  B29C33/64 ,  B29K2075/00 ,  B29K2105/04 ,  C08G77/04 ,  G01S1/02 ,  Y10S264/14

    Abstract: The deposition of a diorganopolysiloxane in liquid form on the surface of a mold is used in making polyurethane foam articles. The diorganopolysiloxane is a release agent for polyurethane foam when applied on a mold surface which has been treated with a conventional release agent. The steps of the method include depositing a conventional mold release agent on the surface of a mold, applying the diorganopolysiloxane over the conventional mold release agent, placing a polyurethane foam composition in the mold, allowing the foam to rise, curing the polyurethane foam and demolding the polyurethane foam product. the diorganopolysiloxanes have siloxane units of R(CH3)SiO, at least 50 mol percent,

    UP TO 40 MOL PERCENT, AND R''(CH3) SiO, up to 10 mol percent, wherein R is an alkyl radical of three to 30 carbon atoms and R'' is methyl, ethyl, phenyl, benzyl and R''''O(C H2 O) (CH2)3-and the diorganopolysiloxane can be end blocked by hydroxyl groups or triorganosiloxy groups.

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