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    • 4. 发明授权
    • Method of preparing cross-linked polydiorganosiloxane using organic
isocyanates and products prepared therefrom
    • 使用有机异氰酸酯制备交联聚二有机硅氧烷及其制备的产品的方法
    • US4234697A
    • 1980-11-18
    • US4522
    • 1979-01-18
    • Gary R. HomanChi-Long Lee
    • Gary R. HomanChi-Long Lee
    • C08G18/00C08G18/61C08G77/00C08G77/28C08K5/29C08J9/00
    • C08G18/61C08K5/29
    • A crosslinked polydiorganosiloxane is prepared by mixing a mercapto-functional polydiorganosiloxane endblocked with organosiloxy units of formulae ##STR1## an organic diisocyanate, a catalyst, such as a tertiary organic amine and water. The resulting product is a sponge if the water is added in the liquid state or a non-porous elastomer if the water in the gas state is allowed to penetrate a blend of the polydiorganosiloxane, organic diisocyanate and tertiary organic amine. Density of sponge prepared by this method can range from about 35 kilograms per cubic meter to about 750 kilograms per cubic meter. A blend of the mercapto-functional polydiorganosiloxane, organic diisocyanate and tertiary organic amine can be used to make sponge by adding water in the liquid state or a non-porous elastomer by exposing it to air.
    • 交联的聚二有机硅氧烷是通过将封端的有机甲硅烷氧基单元与有机二异氰酸酯,催化剂如叔有机胺和水混合而制备的巯基官能聚二有机硅氧烷。 如果允许气体状态的水渗透聚二有机硅氧烷,有机二异氰酸酯和叔有机胺的共混物,则所得产品是水,以液体状态加入海绵或无孔弹性体。 通过该方法制备的海绵的密度可以在约35千克每立方米至约750千克每立方米的范围内。 巯基官能聚二有机硅氧烷,有机二异氰酸酯和叔有机胺的共混物可用于通过将液体状态的水或无孔弹性体暴露于空气中来制造海绵。
    • 9. 发明授权
    • Oxygen-curable mercaptoorganosiloxane compositions containing both redox
and iron carbonyl compounds and method of forming higher molecular
weight products therefrom
    • 含有氧化还原铁羰基化合物的氧可固化的巯基有机硅氧烷组合物和由其形成较高分子量产物的方法
    • US4293676A
    • 1981-10-06
    • US99253
    • 1979-12-03
    • Gary R. HomanChi-Long Lee
    • Gary R. HomanChi-Long Lee
    • B01J31/20C08G75/04C08K3/18C08K3/22C08K3/30C08K5/56C08L83/00C08L83/04C08L83/08C08G77/06
    • C08K3/30C08K3/18C08K3/22C08K5/56
    • Compositions, stable in the absence of oxygen, are formed by mixing the following substantially in the absence of oxygen:(A) 100 parts by weight of at least one mercapto-functional organosiloxane containing at least two mercapto-functional substituents per molecule;(B) a catalytic amount of an iron carbonyl compound catalyst selected from the group consisting of Fe(CO).sub.5, Fe.sub.2 (CO).sub.9, Fe.sub.3 (CO).sub.12, dicyclopentadienyldiiron tetracarbonyl, butadieneiron tricarbonyl and cyclohexadieneiron tricarbonyl, preferably from 0.1 to 6 parts by weight of catalyst per 100 parts by weight of part (A);(C) optionally, at least one filler; and(D) 0.1 to 6 parts by weight per 100 parts by weight of a redox compound such as copper (II) sulfate or iron (III) oxide.The compositions polymerize or cure to form higher molecular weight products upon exposure to oxygen. The use of a redox compound appears to increase the cross-link density of the cured composition and results in harder resins and more durable elastomers. An important novel feature of the redox compounds is that their use enables one to formulate compositions which cure to low-modulus elastomers possessing excellent unprimed adhesion to many common substrates such as glass, metal and concrete. Such low-modulus elastomeric compositions are very desirable for use as building sealants.
    • 通过在不存在氧的情况下基本上混合以下物质形成组合物:(A)100重量份至少一种每分子含有至少两个巯基官能的取代基的巯基官能的有机硅氧烷; (B)催化量的选自Fe(CO)5,Fe 2(CO)9,Fe 3(CO)12,二环戊二烯基二铁四羰基,二羰基二羰基三羰基和三羰基环己二烯基铁的羰基羰基化合物催化剂,优选为0.1〜6 (A)100重量份的催化剂重量份; (C)任选的至少一种填料; 和(D)每100重量份氧化还原化合物如硫酸铜(II)或氧化铁(III)0.1至6重量份。