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216 条记录 (耗时 0.045 秒)

    Method of preventing scale adhesion to surfaces of polymerization tank with phenol-aldehyde coating
    31.
    发明授权
    Method of preventing scale adhesion to surfaces of polymerization tank with phenol-aldehyde coating 失效
    用酚醛涂料防止聚合槽表面附着垢的方法

    公开(公告)号：US5674953A

    公开(公告)日：1997-10-07

    申请号：US466522

    申请日：1995-06-06

    申请人： Seiichi Masuko ,  Ichisaburo Nakamura ,  Keiichi Fukuda ,  Yasuyuki Hatakeyama ,  Akihiro Yamaguchi ,  Keizaburo Yamaguchi

    发明人： Seiichi Masuko ,  Ichisaburo Nakamura ,  Keiichi Fukuda ,  Yasuyuki Hatakeyama ,  Akihiro Yamaguchi ,  Keizaburo Yamaguchi

    IPC分类号： C08F2/00 ,  C08F14/06 ,  C08F2/20 ,  C08F2/02

    CPC分类号： C08F14/06 ,  C08F2/004

    摘要： In a novel method of homo- or copolymerization of vinyl chloride, a specified coating agent is applied on the surfaces of the portions which will become into contact with the vinyl chloride monomer during the polymerization process. The coating agent is in a form of an aqueous solution of a modified condensation product of phenol and aldehyde, the pH of the solution being adjusted in a range that the product is dissolved at an ambient temperature upon coating of the solution and separates out of the solution upon being heated on the surfaces. The wall surface of the polymerization tank and the like is then coated with a thin film of the coating agent having a uniform thickness and being strongly adhered to the wall surface, thereby providing an excellent effect of preventing adhesion of the product polymer to the wall surface.

    摘要翻译： 在氯乙烯均聚或共聚的新方法中，在聚合过程中将在与氯乙烯单体接触的部分的表面上施加特定的涂布剂。 涂层剂是苯酚和醛的改性缩合产物的水溶液形式，溶液的pH值在产物在环境温度下溶解的范围内被调节，并在分离出 在表面上加热时的溶液。 然后将聚合槽等的壁面用均匀厚度的涂布剂的薄膜涂布并牢固地附着在壁面上，从而提供优异的防止产品聚合物粘合到壁面上的效果 。

    Polyimide intermediates
    32.
    发明授权
    Polyimide intermediates 失效
    聚酰亚胺中间体

    公开(公告)号：US5631377A

    公开(公告)日：1997-05-20

    申请号：US450150

    申请日：1995-05-26

    申请人： Mitsunori Matsuo ,  Tsutomu Ishida ,  Akio Karasawa ,  Keizaburo Yamaguchi ,  Akihiro Yamaguchi

    发明人： Mitsunori Matsuo ,  Tsutomu Ishida ,  Akio Karasawa ,  Keizaburo Yamaguchi ,  Akihiro Yamaguchi

    IPC分类号： C08G73/10 ,  C08L79/08 ,  C07C255/60 ,  C07D213/38

    CPC分类号： C08G73/1085 ,  C08G73/10 ,  C08G73/1039 ,  C08G73/105 ,  C08G73/1053 ,  C08G73/1071 ,  C08L79/08

    摘要： This invention relates to a novel polyimide or polyimide copolymer having excellent heat resistance and greatly improved processability, and has a novel aromatic diamino compound used for the polyimide, a preparation process thereof, a polyimide-based resin composition comprising the polyimide or polyimide copolymer and a fibrous reinforcement, a process for preparing the resin composition, an injection molded article of the resin composition.The polyimide comprise a requisite structural unit having one or more recurring structural units of the formula: ##STR1## wherein L is an oxygen atom, carbonyl, isopropylidene or hexafluoroisopropylidene, and X is ##STR2## , and Ar is a tetravalent radical having 6 to 27 carbon atoms and being selected from the group consisting of a monoaromatic radical, condensed polyaromatic radical and noncondensed polyaromatic radical having aromatic radicals connected to each other with a direct bond or a bridge member.The polyimide or polyimide copolymer is outstanding in melt-flow stability, and has greatly improved processability and excellent heat resistance. Consequently, the polyimide or polyimide copolymer can be applied to structural materials, and electic . electronic appliances.

    摘要翻译： 本发明涉及耐热性优异且加工性极佳的新型聚酰亚胺或聚酰亚胺共聚物，具有用于聚酰亚胺的新型芳族二氨基化合物及其制备方法，包含聚酰亚胺或聚酰亚胺共聚物的聚酰亚胺系树脂组合物和 纤维增强材料，树脂组合物的制备方法，树脂组合物的注塑制品。 聚酰亚胺包含具有一个或多个下式的重复结构单元的必需结构单元：其中L是氧原子，羰基，异亚丙基或六氟异亚丙基，X是X，且Ar是 选自具有6至27个碳原子的四价基团，并且选自具有芳族基团的单芳族基团，缩合多芳族基团和具有直接键合的桥连构件彼此连接的非缩合多芳族基团。 聚酰亚胺或聚酰亚胺共聚物在熔体流动稳定性方面是突出的，并且具有极大的改进的加工性和优异的耐热性。 因此，聚酰亚胺或聚酰亚胺共聚物可以应用于结构材料和电极。 电子电器。

    Salicylic acid copolymers and their metal salts, production process thereof, color-developing agents comprising metal salts of the copolymers, and color-developing sheets employing the agents
    37.
    发明授权
    Salicylic acid copolymers and their metal salts, production process thereof, color-developing agents comprising metal salts of the copolymers, and color-developing sheets employing the agents 失效
    水杨酸共聚物及其金属盐，其制备方法，包含共聚物的金属盐的显色剂和使用该试剂的显色片

    公开(公告)号：US5023366A

    公开(公告)日：1991-06-11

    申请号：US111763

    申请日：1987-10-23

    申请人： Keizaburo Yamaguchi ,  Yoshimitsu Tanabe ,  Makoto Asano ,  Akihiro Yamaguchi

    发明人： Keizaburo Yamaguchi ,  Yoshimitsu Tanabe ,  Makoto Asano ,  Akihiro Yamaguchi

    IPC分类号： B41M5/155 ,  C08G61/02

    CPC分类号： C08G61/02 ,  B41M5/155

    摘要： Disclosed herein are salicylic acid copolymers having a weight average molecular weight of 500-10,000 and obtained (a) by condensing salicylic acid (i) with a benzyl alcohol (ii) and/or benzyl ether (iii) or a benzyl halide (iv) in the presence of an acid catalyst or (b) by reacting a co-condensation resin of (i) and (ii) and/or (iii) with (iv) or (c) by reacting a co-condensation resin of (i) and (ii) and/or (iii) or (iv) with a styrene derivative in the presence of an acid catalyst; multivalent metal salts of the salicylic acid copolymers; color-developing agents comprising the multivalent metal salts; and color-developing sheets suited for pressure-sensitive copying paper and comprising the color-developing agents. Their production processes are also disclosed.

    摘要翻译： 本文公开了重均分子量为500〜10,000的水杨酸共聚物，（a）通过将水杨酸（i）与苄醇（ⅱ）和/或苄基醚（ⅲ）或苄基卤（ⅳ） 在酸催化剂的存在下，或（b）通过使（i）和（ii）和/或（iii）的共缩合树脂与（iv）或（c）的共缩合树脂与 ）和（ii）和/或（iii）或（iv）与苯乙烯衍生物在酸催化剂存在下反应; 水杨酸共聚物的多价金属盐; 包含多价金属盐的显色剂; 以及适用于压敏复印纸并包含彩色显影剂的彩色显影纸。 他们的生产过程也被披露。

    Linear salicylic acid copolymers and their metal salts, production process thereof, color-developing agents comprising metal-resins of the copolymers
    39.
    发明授权
    Linear salicylic acid copolymers and their metal salts, production process thereof, color-developing agents comprising metal-resins of the copolymers 失效
    线性水杨酸共聚物及其金属盐，其制备方法，包含共聚物的金属 - 树脂的显色剂

    公开(公告)号：US4783521A

    公开(公告)日：1988-11-08

    申请号：US4323

    申请日：1987-01-16

    申请人： Akihiro Yamaguchi ,  Keizaburo Yamaguchi ,  Yoshimitsu Tanabe ,  Makoto Asano ,  Masaru Wada

    发明人： Akihiro Yamaguchi ,  Keizaburo Yamaguchi ,  Yoshimitsu Tanabe ,  Makoto Asano ,  Masaru Wada

    IPC分类号： B41M5/155 ,  C08G61/10 ,  C08G63/06

    CPC分类号： B41M5/155 ,  C08G61/10

    摘要： Disclosed herein are novel linear copolymers having weight average molecular weight of 500-30,000 and comprising structural units represented by the following formulae (I), (II), (III) and (IV): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 mean individually an alkyl group having 4 or fewer carbon atoms and R.sub.4 denotes an alkyl, cycloalkyl, aralkyl or phenyl group, and multivalent metal salts thereof in each of which the multivalent metal forms the multivalent metal salt between carboxyl groups within the same molecule of the copolymer or between different molecules of the copolymer; color-developing agents comprising multivalent metal-modified resins of the copolymers; and color-developing sheets obtained by coating the color-developing agents on their surfaces.

    摘要翻译： 本文公开了重均分子量为500〜30,000的新型线性共聚物，其包含由下式（I），（II），（III）和（IV）表示的结构单元：（I） （III）其中R1，R2和R3分别表示具有4个或更少碳原子的烷基，R4表示烷基，环烷基，芳烷基或苯基，其多价金属盐在 其中的多价金属在共聚物的相同分子内或共聚物的不同分子之间的羧基之间形成多价金属盐; 包含共聚物的多价金属改性树脂的显色剂; 以及通过在其表面上涂布显色剂而获得的显色片。