Process for producing liquid dibasic acid anhydrides
    1.
    发明授权
    Process for producing liquid dibasic acid anhydrides 失效
    生产液体二元酸酐的方法

    公开(公告)号:US4283343A

    公开(公告)日:1981-08-11

    申请号:US105247

    申请日:1979-12-19

    IPC分类号: C07D307/89 C07C61/24

    CPC分类号: C07C61/24

    摘要: A dibasic acid anhydride which is liquid at 0.degree. C., or even at -20.degree. C., is produced by heat-treating in the presence of a stereoisomerization catalyst a structural isomeric mixture obtained by shifting the double bond of methyl-tetrahydrophthalic anhydride. The liquid dibasic acid anhydride is useful as a curing agent for epoxy resins.

    摘要翻译: 在0℃或甚至-20℃下为液态的二元酸酐通过在立体异构化催化剂存在下进行热处理来制备,该结构异构体混合物通过将甲基四氢邻苯二甲酸酐的双键 。 液体二元酸酐可用作环氧树脂的固化剂。

    Process for isomerizing methyl-delta-4-tetrahydrophthalic anhydride
    2.
    发明授权
    Process for isomerizing methyl-delta-4-tetrahydrophthalic anhydride 失效
    异构化甲基-Δ4-四氢邻苯二甲酸酐的方法

    公开(公告)号:US4226779A

    公开(公告)日:1980-10-07

    申请号:US34502

    申请日:1979-04-30

    IPC分类号: C07C61/22 C07D307/89

    CPC分类号: C07C61/22

    摘要: A process for isomerizing methyl-delta-4-tetrahydrophthalic anhydride, which comprises heat-treating it at 60.degree. to 300.degree. C. for 0.1 to 30 hours in the presence of at least one nitrogen-containing compound selected from the group consisting of (a) a quaternary ammonium compound and (b) a compound having a nitrogen atom bonded to the carbon atom of the carbonyl group (e.g., an amide, imide, carbamate, urea or semicarbazide compound). The product is liquid at room temperature, and especially suitable for use as a curing agent for epoxy resins.

    摘要翻译: 一种使甲基-Δ4-四氢邻苯二甲酸酐异构化的方法,其包括在至少一种选自以下的含氮化合物存在下,在60℃至300℃下热处理0.1-30小时( a)季铵化合物和(b)具有与羰基的碳原子键合的氮原子的化合物(例如酰胺,酰亚胺,氨基甲酸酯,脲或氨基脲化合物)。 该产品在室温下为液体,特别适合用作环氧树脂的固化剂。

    Epoxy resin composition
    3.
    发明授权
    Epoxy resin composition 失效
    环氧树脂组合物

    公开(公告)号:US4451637A

    公开(公告)日:1984-05-29

    申请号:US463024

    申请日:1983-02-01

    IPC分类号: C08G59/00 C07C61/29 C08G59/42

    CPC分类号: C07C61/29 C08G59/4223

    摘要: A heat-curable epoxy resin composition comprising (A) an epoxy resin and (B) an acid anhydride curing agent liquid at 20.degree. C. composed of, based on acid anhydride equivalents, of 10 to 70% of a tetrabasic acid anhydride represented by the following formula ##STR1## wherein R.sub.1 represents hydrogen or a methyl group, andR.sub.2 represents hydrogen or a lower alkyl group,and 30 to 90% of a liquid alicyclic dibasic acid anhydride.

    摘要翻译: 一种可热固化的环氧树脂组合物,其包含(A)环氧树脂和(B)在20℃下由基于酸酐当量组成的酸酐固化剂液体,其为10至70%的四碳酸酐,由 其中R 1表示氢或甲基,R 2表示氢或低级烷基,和30〜90%的液体脂环族二元酸酐。

    Hydrogenated norbornene ring-opening polymerization product, a process
for production thereof and uses thereof
    4.
    发明授权
    Hydrogenated norbornene ring-opening polymerization product, a process for production thereof and uses thereof 失效
    氢化降冰片烯开环聚合产物,其制备方法和用途

    公开(公告)号:US5681900A

    公开(公告)日:1997-10-28

    申请号:US537866

    申请日:1996-01-22

    CPC分类号: C08G61/08

    摘要: A resin obtained by subjecting a norbornene type monomer having an aromatic ring structure (e.g. 5-phenyl-2-norbornene) to ring-opening polymerization and hydrogenating 95% or more of the unsaturated bonds in the backbone structure of the resulting polymer by the use of a catalyst composed of a combination of a transition metal compound and an alkyl metal compound, while leaving 80% or more of the aromatic ring structures, which resin has not only a high refractive index but also characteristics of a hydrogenated norbornene ring-opening polymerization product, i.e., excellent heat resistance, transparency, low birefringent properties, weather resistance, light resistance, low water absorption properties, moisture resistance, small dielectric constant, small dielectric loss, chemical resistance, etc., said resin being usable in optical materials, medical tools and materials, tools and materials for treating electronic parts, etc.

    摘要翻译: PCT No.PCT / JP94 / 01244 Sec。 371日期1996年1月22日 102(e)日期1996年1月22日PCT提交1994年7月28日PCT公布。 出版物WO95 / 04096 日期1995年2月9日通过使具有芳环结构的降冰片烯型单体(例如5-苯基-2-降冰片烯)进行开环聚合,并在其主链结构中氢化95%以上的不饱和键而得到的树脂 通过使用由过渡金属化合物和烷基金属化合物的组合组成的催化剂,同时留下80%或更多的芳族环结构,该树脂不仅具有高折射率,而且具有氢化特性 降冰片烯开环聚合产物,即优异的耐热性,透明性,低双折射性,耐候性,耐光性,低吸水性,耐湿性,介电常数小,介电损耗小,耐化学腐蚀等特性。 可用于光学材料,医疗工具和材料,用于处理电子部件的工具和材料等。

    Ring-opening hydrogenated copolymer and process for producing the same
    5.
    发明授权
    Ring-opening hydrogenated copolymer and process for producing the same 失效
    开环氢化共聚物及其制备方法

    公开(公告)号:US5580934A

    公开(公告)日:1996-12-03

    申请号:US476489

    申请日:1990-06-07

    IPC分类号: C08G61/08 C08F232/08 C08F8/04

    CPC分类号: C08G61/08

    摘要: There are disclosed a polycyclic norbornene or its derivative hydrogenated copolymer which containsa repeating unit represented by the following formula [I] or the alkyl-substituted derivative thereof (A),a repeating unit represented by the following formula [II] or the alkyl-substituted derivative thereof (B) and, as desired,5-85% by mole of at least one repeating unit (C) selected from a repeating unit represented by the following formula [III], the alkyl-substituted derivative thereof, a repeating unit represented by the following formula [IV], the alkyl-substituted derivative and the alkylidene-substituted derivative thereof, and a process for producing the polycyclic norbornene or its derivative ring-opening hydrogenated copolymer ##STR1## wherein ------ represents either a single bond or a double bond.

    摘要翻译: PCT No.PCT / JP88 / 01331 Sec。 371日期1990年6月7日 102(e)日期1990年6月7日PCT提交1988年12月26日PCT公布。 出版物WO89 / 06254 日期:1989年7月13日公开了含有下述式[I]表示的重复单元或其烷基取代衍生物(A)的多环降冰片烯或其衍生物氢化共聚物,由下式[II ]或其烷基取代的衍生物(B),根据需要,5-85摩尔%至少一种选自下式[III]表示的重复单元的重复单元(C),烷基取代的衍生物 由下式[Ⅳ]表示的重复单元,烷基取代的衍生物和亚烷基取代的衍生物,以及制备多环降冰片烯或其衍生物开环氢化共聚物的方法, [II] [III] [IV]其中+ E,uns --- + EE表示单键或双键。

    Hydraulic cement composition
    8.
    发明授权
    Hydraulic cement composition 失效
    水泥水泥组成

    公开(公告)号:US4906298A

    公开(公告)日:1990-03-06

    申请号:US228823

    申请日:1988-08-02

    IPC分类号: C04B24/26

    CPC分类号: C04B24/2664

    摘要: A hydraulic cement composition comprising hydraulic cement and a copolymer of 60 to 85 mol % of an alpha,beta-unsaturated dicarboxylic acid and 40 to 15 mol % of an olefin or a water-soluble salt thereof, said copolymer having a number average molecular weight of 300 to 10,000 and containing not more than 10% by weight of a high-molecular-weight polymer having a molecular weight of at least 20,000.

    摘要翻译: 一种水硬性水泥组合物,其包含水硬性水泥和60至85mol%的α,β-不饱和二羧酸和40至15mol%的烯烃或其水溶性盐的共聚物,所述共聚物具有数均分子量 为300〜10000,含有不超过10重量%的分子量至少为20,000的高分子量聚合物。

    Water-reducing admixture
    9.
    发明授权
    Water-reducing admixture 失效
    减水剂

    公开(公告)号:US4125410A

    公开(公告)日:1978-11-14

    申请号:US717380

    申请日:1976-08-24

    申请人: Tadao Natsuume

    发明人: Tadao Natsuume

    CPC分类号: C04B24/20 C04B24/22 C04B28/02

    摘要: A water-reducing admixture for use in preparing a hydraulic composition comprisingI. 95 to 50% by weight of a water-soluble sulfonate andIi. 5 to 50% by weight of a water-soluble copolymer, said water-soluble sulfonate (I) being selected from the group consisting ofA. a water-soluble salt of a sulfonated aromatic hydrocarbon,B. a water-soluble sulfonate, andC. a water-soluble salt of sulfonated melamine resins.

    摘要翻译: 一种用于制备水硬性组合物的减水剂,其包含I.95至50重量%的水溶性磺酸盐和II。 5〜50重量%的水溶性共聚物,所述水溶性磺酸盐(I)选自A.A。磺化芳香烃的水溶性硫,B.可溶于水的磺酸盐,和 C.可溶性硫磺磺酸盐树脂。