Process for the preparation of 2,2'-bis(4-substituted phenol)sulfides
    42.
    发明授权
    Process for the preparation of 2,2'-bis(4-substituted phenol)sulfides 失效
    制备2,2'-双(4-取代苯酚)硫化物的方法

    公开(公告)号:US4380671A

    公开(公告)日:1983-04-19

    申请号:US288428

    申请日:1981-07-30

    CPC分类号: C07C323/00

    摘要: Disclosed is a process for the preparation of 2,2'-bis(4-substituted phenol)sulfides which comprises reacting a 4-substituted phenol with sulfur dichloride in a hydrocarbon solvent at a temperature of from -10.degree. to 40.degree. C. in the presence of a Lewis acid catalyst. For example, 2,2'-bis(4-cumylphenol)-sulfide, i.e. 2,2'-bis(4-.alpha.,.alpha.-dimethyl benzyl-phenol)monosulfide, which is a novel compound can be prepared by reacting 4-cumylphenol with sulfur dichloride in benzene at a temperature of from 0.degree.to 10.degree. C. in the presence of zinc chloride.

    摘要翻译: 公开了一种制备2,2'-双(4-取代苯酚)硫化物的方法,其包括使4-取代的苯酚与二氯化硫在烃溶剂中在-10℃至40℃的温度下反应 存在路易斯酸催化剂。 例如,作为新化合物的2,2'-双(4-枯基苯酚)硫化物,即2,2'-双(4-甲基-α,α-二甲基苄基 - 苯酚)单硫化物可以通过使4- 异丙苯酚与二氯化硫在苯中,在氯化锌存在下,在0〜10℃的温度下进行。

    Method of preventing scale adhesion to the surfaces of a polymerization tank
    43.
    发明授权
    Method of preventing scale adhesion to the surfaces of a polymerization tank 失效
    防止水垢附着在聚合槽表面的方法

    公开(公告)号:US06291600B1

    公开(公告)日:2001-09-18

    申请号:US08053974

    申请日:1993-04-09

    IPC分类号: C08F200

    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 。

    Aromatic hydroxycarboxylic acid resins and their use
    44.
    发明授权
    Aromatic hydroxycarboxylic acid resins and their use 失效
    芳香族羟基羧酸树脂及其用途

    公开(公告)号:US6040111A

    公开(公告)日:2000-03-21

    申请号:US993657

    申请日:1997-12-18

    摘要: Disclosed are an aromatic hydroxycarboxylic acid resin represented by the following formula (1): ##STR1## wherein each A group is the same or different and individually represents a substituted or unsubstituted phenylene or naphthylene group, R.sup.1 represents a hydrogen atom or a C.sub.1-4 alkyl group, R.sup.2 represents a hydrogen atom or a C.sub.1-10 alkyl, C.sub.1-10 alkoxyl, nitro or hydroxyl group, l stands for an integer of 0-100, m stands for an integer of 0-20 and n stands for an integer of 0-3 with the proviso that m stands for an integer other than 0 when all of the A group represent an unsubstituted or substituted phenylene group, a preparation process thereof and use of the same.

    摘要翻译: 公开了由下式(1)表示的芳族羟基羧酸树脂:其中每个A基团相同或不同,并且各自表示取代或未取代的亚苯基或亚萘基,R 1表示氢原子或C 1-4烷基, R 2表示氢原子或C 1-10烷基,C 1-10烷氧基,硝基或羟基,l表示0〜100的整数,m表示0〜20的整数,n表示0〜 3,条件是当A基全部为未取代或取代的亚苯基时,m代表0以外的整数,其制备方法和用途。

    Readily soluble, amorphous polyimide, and preparation process of same
    45.
    发明授权
    Readily soluble, amorphous polyimide, and preparation process of same 失效
    易溶,无定形聚酰亚胺及其制备方法相同

    公开(公告)号:US5480965A

    公开(公告)日:1996-01-02

    申请号:US280551

    申请日:1994-07-26

    摘要: This invention relates to a novel thermoplastic and amorphous polyimide which is readily soluble in organic solvent, a novel aromatic diamino compound used for the polyimide, a preparation process thereof, a polyimide-based resin composition comprising the thermoplastic polyimide and a fibrous reinforcement, a process for preparing the resin composition, an injection molded article of the resin composition, a polyimide-based composite obtained by molding the above soluble and thermoplastic polyimide in combination with a fibrous reinforcement, and a fibrous reinforcement having a surface modified with the above polyimide.The polyimide comprise a requisite structural unit having one or more recurring structural units of the formula: ##STR1## wherein m and n are individually an integer of 0 or 1, and R is ##STR2## The polyimide of the invention is essentially amorphous, excellent in melt flow stability in the decreased temperature as compared with conventionally known polyimide and has greatly improved processability.The polyimide of the invention obtained by using a novel aromatic diamino compound as a monomer can control various properties such as melt flow ability and solubility in solvents by side chains and not by principal chain of polyimide. Thus, excellent melt flow property and solubility in solvents can be obtained while maintaining high heat resistance and adhesive property which are derived from benzophenone structure of the diamino compound of the the invention.

    摘要翻译: 本发明涉及易溶于有机溶剂的新型热塑性和无定形聚酰亚胺,用于聚酰亚胺的新型芳族二氨基化合物及其制备方法,包含热塑性聚酰亚胺和纤维增强剂的聚酰亚胺基树脂组合物, 用于制备树脂组合物的树脂组合物的注塑制品,通过将上述可溶性和热塑性聚酰亚胺与纤维增强剂组合成型而获得的聚酰亚胺类复合材料和具有用上述聚酰亚胺改性的表面的纤维增强剂。 聚酰亚胺包含必需的结构单元,其具有一个或多个下式的重复结构单元:其中m和n分别为0或1的整数,R为本发明的聚酰亚胺基本上为 与常规已知的聚酰亚胺相比,在降低的温度下的熔体流动稳定性优异并且具有极大的改进的加工性。 通过使用新颖的芳族二氨基化合物作为单体获得的本发明的聚酰亚胺可以通过侧链而不是聚酰亚胺的主链来控制各种性能如熔体流动性和在溶剂中的溶解度。 因此,在保持由本发明的二氨基化合物的二苯甲酮结构得到的高耐热性和粘合性的同时,可以获得优异的熔体流动性和溶剂中的溶解性。

    Polyimide
    46.
    发明授权
    Polyimide 失效
    聚酰亚胺

    公开(公告)号:US5470943A

    公开(公告)日:1995-11-28

    申请号:US360584

    申请日:1994-12-21

    CPC分类号: C08G73/1039 C08G73/1085

    摘要: This invention relates to a novel fluorine-containing polyimide or polyimide copolymer being colorless and having transparency and very low dielectric characteristics, 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 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, a trifluoromethyl radical is situated at the 3- or the 4-position on a pyridine nucleus, and an imide nitrogen atom is connected at the 3- or the 4-position to an ether bond.The polyimide or polyimide copolymer has excellent heat resistance, outstanding melt-flow stability and greatly improved processability, and also is colorless and has high transparency and very low dielectric coefficient, and can be expected to be used as raw materials for electric.cndot.electronic appliances and optical instruments due to the above characteristics.

    摘要翻译: 本发明涉及一种新颖的含氟聚酰亚胺或聚酰亚胺共聚物,其具有透明性和非常低的介电特性,并且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,该聚酰亚胺系树脂组合物含有聚酰亚胺 或聚酰亚胺共聚物和纤维增强剂,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Ar是具有6至27个碳原子的四价基团,并且选自单芳族基团,缩合多芳族基团 具有芳族基团的自由基和非缩合多芳族基团彼此直接键合或桥接成员,三氟甲基位于吡啶核上的3-或4-位,酰亚胺氮原子连接在3 - 或4-位到醚键。 聚酰亚胺或聚酰亚胺共聚物具有优异的耐热性,优异的熔体流动稳定性和极好的加工性,并且是无色的,具有高透明度和非常低的介电系数,并且可以预期用作电气电子设备的原料 光学仪器由于上述特点。

    Aromatic diamine intermediates useful in the preparation of polyimide
    47.
    发明授权
    Aromatic diamine intermediates useful in the preparation of polyimide 失效
    芳族二胺中间体可用于制备聚酰亚胺

    公开(公告)号:US5322962A

    公开(公告)日:1994-06-21

    申请号:US59758

    申请日:1993-05-12

    IPC分类号: C07C225/22 C08G73/10

    摘要: Disclosed are a novel aromatic diamine; a polymide comprising 1,3-bis(3-aminobenzoyl)benzene or 4,4'-bis(3-aminobenzoyl)biphenyl as a diamine component and having recurring structural units represented by the formula (III): ##STR1## wherein R is a tetravalent radical selected from the group consisting of an aliphatic radical having from 2 to 27 carbon atoms, alicyclic radical, monoaromatic radical, condensed polyaromatic radical, and noncondensed aromatic radical connected each other with a direct bond or a bridge member, and X is a divalent radical of ##STR2## and a polyimide having a terminal aromatic group which is essentially unsubstituted or substituted with a radical having no reactivity with amines or dicarboxylic acid anhydrides or a composition comprising said polyimide.

    摘要翻译: 公开了一种新型芳族二胺; (III)所示的具有重复结构单元的1,3-二(3-氨基苯甲酰基)苯或4,4'-双(3-氨基苯甲酰基)联苯的聚酰亚胺作为二胺成分, 其中R是选自具有2至27个碳原子的脂肪族基团,脂环族基团,单芳族基团,缩合多芳族基团和与直接键合或桥接成员相互连接的非缩合芳族基团的四价基团,以及 X是的二价基团和具有基本上未被取代的末端芳基或被不与胺或二羧酸酐反应的基团取代的聚酰亚胺或包含所述聚酰亚胺的组合物。

    Process for preparing bisphenol sulfone derivatives
    50.
    发明授权
    Process for preparing bisphenol sulfone derivatives 失效
    制备双酚砜衍生物的方法

    公开(公告)号:US4287366A

    公开(公告)日:1981-09-01

    申请号:US128712

    申请日:1980-03-10

    CPC分类号: C07C315/02

    摘要: A process for preparing bisphenol sulfone derivatives represented by the general formula (I) ##STR1## where R stands for hydrogen, a halogen, an alkyl radical, a cycloalkyl radical, an aryl radical, an aralkyl radical, hydroxyl group, an alkoxy radical, allyloxy group, carboxyl group, or a carboalkoxy radical, m is an integer of from 1 to 3, and when m is 2 or more, R may be identical to or different from each other, and adjacent Rs may be combined to form a ring, by oxidizing with hydrogen peroxide a compound represented by the general formula (II) ##STR2## where R and m have the same meanings as defined for the formula (I), and n is zero or 1, in the presence of an alkali in an amount more than the equimolar amount thereof relative to said compound in water and/or an organic solvent which do not form any organic peracids under reaction conditions.

    摘要翻译: 一种制备由通式(I)表示的双酚砜衍生物的方法,其中R代表氢,卤素,烷基,环烷基,芳基,芳烷基,羟基, 烷氧基,烯丙氧基,羧基或烷氧羰基,m为1〜3的整数,当m为2以上时,R可以相同也可以不同,相邻的Rs可以组合成 形成环,通过用过氧化氢氧化由通式(II)表示的化合物(II)其中R和m具有与式(I)所定义相同的含义,并且n为0或1,在 在水和/或在反应条件下不形成任何有机过酸的有机溶剂中,相对于所述化合物,碱的存在量超过等摩尔量。