公开(公告)号：US4985513A

公开(公告)日：1991-01-15

申请号：US336112

申请日：1989-04-11

申请人： Shin-ichiro Iwanaga ,  Tatsuaki Matsunaga ,  Ituo Nishiwaki ,  Hiroji Enyo

发明人： Shin-ichiro Iwanaga ,  Tatsuaki Matsunaga ,  Ituo Nishiwaki ,  Hiroji Enyo

IPC分类号： C08F2/00 ,  C08F2/44 ,  C08F2/48 ,  C08F2/50 ,  C08F236/04 ,  C08F236/14 ,  G03F7/032 ,  G03F7/033

CPC分类号： G03F7/033 ,  C08F236/04

摘要： A conjugated diene copolymer comprising (A) 40 to 90 mole % of a conjugated diene component, (B) 0.5 to 10 mole % of an alpha,beta-ethylenically unsaturated carboxylic acid component, (C) 0.1 to 5 mole % of a polyfunctional alkenyl compound component and (D) 5 to 58 mole % of a monoolefinically unsaturated compound component wherein the intrinsic viscosity [.eta.] of the copolymer as measured at 30.degree. C. in dimethylformamide is 0.01 to 3.0 dl/g, the width (.DELTA.Tg) of the endothermic transition temperature section determined by a differential scanning calorimetry is 45.degree. to 120.degree. C., and the limit temperature (T.sub.1) on the lower temperature side of the endothermic transition temperature section is -40.degree. C. or less. This copolymer, when combined with a photopolymerizable unsaturated monomer and a photosensitizer, provides a photosensitive resin composition which is soluble in aqueous alkali solutions, has an excellent processability and a photocurability, has an excellent rubber elasticity and a transparency even after curing, and has excellent water resistance.

公开(公告)号：US4927738A

公开(公告)日：1990-05-22

申请号：US124870

申请日：1987-11-24

申请人： Shin-ichiro Iwanaga ,  Tatsuaki Matsunaga ,  Ituo Nishiwaki ,  Hiroji Enyo

发明人： Shin-ichiro Iwanaga ,  Tatsuaki Matsunaga ,  Ituo Nishiwaki ,  Hiroji Enyo

IPC分类号： C08F2/00 ,  C08F2/44 ,  C08F2/48 ,  C08F2/50 ,  C08F236/04 ,  C08F236/14 ,  G03F7/032 ,  G03F7/033

CPC分类号： G03F7/033 ,  C08F236/04

摘要： A conjugated diene copolymer comprising (A) 40 to 90 mole % of a conjugated diene component, (B) 0.5 to 10 mole % of an alpha,beta-ethylenically unsaturated carboxylic acid component, (C) 0.1 to 5 mole % of a polyfunctional alkenyl compound component and (D) 5 to 58 mole % of a monoolefinically unsaturated compound component wherein the intrinsic viscosity [.eta.] of the copolymer as measured at 30.degree. C. in dimethylformamide is 0.01 to 3.0 dl/g, the width (.DELTA.Tg) of the endothermic transition temperature section determined by a differential scanning calorimetry is 45.degree. to 120.degree. C. and the limit temperature (T.sub.1) on the lower temperature side of the endothermic transition temperature section is -40.degree. C. or less. This copolymer, when combined with a photopolymerizable unsaturated monomer and a photosensitizer, provides a photosensitive resin composition which is soluble in aqueous alkali solutions, has an excellent processability and a photocurability, has an excellent rubber elasticity and a transparency even after curing, and has excellent water resistance.

公开(公告)号：US4246427A

公开(公告)日：1981-01-20

申请号：US966999

申请日：1978-12-06

申请人： Naoki Andoh ,  Ituo Nishiwaki ,  Akira Iio ,  Masatoshi Arakawa

发明人： Naoki Andoh ,  Ituo Nishiwaki ,  Akira Iio ,  Masatoshi Arakawa

IPC分类号： B01J23/34 ,  B01J27/00 ,  B01J27/199 ,  C07B61/00 ,  C07C51/00 ,  C07C51/25 ,  C07C57/055 ,  C07C67/00

CPC分类号： B01J23/34 ,  B01J23/002 ,  B01J27/199 ,  C07C51/252 ,  B01J2523/00

摘要： Methacrylic acid is produced from methacrolein by gaseous phase oxidation in a very high selectivity, when methacrolein, molecular oxygen-containing gas and steam in a molar ratio of methacrolein:molecular oxygen:steam of 1:1-3:0-50 are subjected to reaction at a temperature in the range of 250.degree. to 400.degree. C., at a space velocity of 250 to 3,000 hr.sup.-1 (at 0.degree. C. and 1 atm.) with a novel catalyst having the following composition formula in atomic ratio:Mo.sub.a P.sub.b Zr.sub.c V.sub.d Mn.sub.e X.sub.f O.sub.gwherein X represents at least one member selected from the group consisting of potassium, rubidium, cesium and thallium, and a, b, c, d, e, f or g represents the number of atoms of Mo, P, Zr, V, Mn, X or O, respectively, and when a is 12, b is 0.5 to 5, c is 0.1 to 5, d is 0.05 to 3, e is 0.05 to 1.5, f is 0.1 to 3 and g is 40 to 60; and g is a number sufficient enough to satisfy the valencies of the respective catalyst component elements. Said catalyst has a high catalyst activity and a physical strength high enough for the catalyst to stand the severe conditions required for use on a commercial scale.

摘要翻译： 当甲基丙烯醛，含分子氧的气体和摩尔比为1：1-3：0-50的甲基丙烯醛：蒸汽的摩尔比为1：1-3：0-50的摩尔比时，甲基丙烯酸以非常高的选择性通过气相氧化由异丁烯醛生产。 在250〜3000hr -1的空间速度（0℃和1个大气压）下，在250〜400℃的温度下进行反应，得到具有以下组成式的原子比的新型催化剂 ：MoaPbZrcVdMneXfOg其中X表示选自钾，铷，铯和铊中的至少一种，a，b，c，d，e，f或g表示Mo，P，Zr，V的原子数 ，Mn，X或O，当a为12时，b为0.5〜5，c为0.1〜5，d为0.05〜3，e为0.05〜1.5，f为0.1〜3，g为40〜60 ; g是足以满足各催化剂成分元素的价态的数。 所述催化剂具有高的催化剂活性和足够高的物理强度，以使催化剂能够承受商业规模所需的苛刻条件。