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    • 6. 发明授权
    • High-temperature oil-resistant elastomers
    • 耐高温耐高温弹性体
    • US5231143A
    • 1993-07-27
    • US889661
    • 1992-05-27
    • Tonson Abraham
    • Tonson Abraham
    • C08C19/02C08F8/04C08F236/04C08F236/16
    • C08F236/16C08C19/02C08F236/04C08F8/04
    • High-temperature oil-resistant elastomers are prepared from butadiene alkenylpyridine copolymers, butadiene-acrylate copolymers, and copolymers of butadiene with 1,3-dienes containing fluorine. The unsaturated olefinic backbone and pendant unsaturation derived from the hydrocarbon diene of each of the copolymers is hydrogenated to a high degree by a catalyst which improves the heat resistance of the copolymer without hydrogenation of the polar groups thereof which would lower the oil-resistance of the copolymer. A complexing agent for the hydrogenation catalyst prevents poisoning of the catalyst by the polar groups of the copolymers thereby enabling the catalyst to complex with unsaturated sites along the olefinic copolymer backbone to achieve high levels of hydrogenation thereof.
    • 丁二烯烯基吡啶共聚物,丁二烯 - 丙烯酸酯共聚物,丁二烯与含有氟的1,3-二烯的共聚物制备高温耐油弹性体。 衍生自各共聚物的烃二烯的不饱和烯烃主链和侧链不饱和基团通过催化剂氢化至高度,该催化剂改善了共聚物的耐热性,而无需极性基团的氢化,这将降低其耐油性 共聚物。 用于氢化催化剂的络合剂防止了共聚物的极性基团使催化剂中毒,从而使得催化剂能够沿着烯烃共聚物主链与不饱和部位络合,以实现其高水平的氢化。
    • 9. 发明授权
    • Polychloroprene-tackifying resin dispersions
    • 聚氯丁二烯增粘树脂分散体
    • US3912676A
    • 1975-10-14
    • US36527573
    • 1973-05-30
    • DU PONT
    • BRIZZOLARA DONALD FRANCISGARRETT ROBERT ROTH
    • C08F2/00C08F2/22C08F220/00C08F220/04C08F236/00C08F236/16C08F236/18C08F283/00C09J113/02C09J121/02C08L93/00C08L61/06
    • C09J113/02C08F236/18C08F283/00
    • A process is provided for making novel chloroprene-unsaturated carboxylic acid copolymer latexes having tackifying resin intimately dispersed therein, the latexes having characteristics making them especially suitable for use in nonsolvent adhesives. The process includes the steps of (1) preparing a waterimmiscible solution containing the chloroprene monomer, an alpha, beta-unsaturated carboxylic acid monomer, and a tackifying resin, (2) emulsifying this solution in water containing polyvinyl alcohol, and (3) copolymerizing the monomers in the emulsion so formed; the chloroprene-carboxylic acid mixture of step (1) containing 0.4-10 mole percent of the carboxylic acid based on the total of chloroprene plus carboxylic acid and the tackifying resin being present in said mixture in the proportion of 5-75 parts, and the polyvinyl alcohol (PVA) being present in step (2) in the proportion of 2-10 parts, all of said proportions being by weight per 100 parts of total chloroprene plus carboxylic acid monomer.
    • 提供了一种制备具有紧密分散在其中的增粘树脂的新型氯丁二烯 - 不饱和羧酸共聚物胶乳的方法,该胶乳具有使其特别适用于非溶剂粘合剂的特性。 该方法包括以下步骤:(1)制备含有氯丁二烯单体,α,β-不饱和羧酸单体和增粘树脂的水不混溶溶液,(2)将该溶液乳化在含有聚乙烯醇的水中,和(3 )使如此形成的乳液中的单体共聚; 基于氯丁二烯加羧酸的总量和增粘树脂以5-75份的比例存在于所述混合物中的步骤(1)的氯丁二烯 - 羧酸混合物含有0.4-10摩尔%的羧酸,以及 聚乙烯醇(PVA)以2-10份的比例存在于步骤(2)中,所有比例均为每100份氯丁二烯加羧酸单体重量。