Process for the production of methyl methacrylate homo- or co-polymers
    1.
    发明授权
    Process for the production of methyl methacrylate homo- or co-polymers 失效
    制备甲基丙烯酸甲酯均聚物或共聚物的方法

    公开(公告)号:US4369296A

    公开(公告)日:1983-01-18

    申请号:US243877

    申请日:1981-03-16

    CPC分类号: C08F20/14

    摘要: A process for the polymerization of methyl methacrylate or mixtures thereof with up to 25%, by weight, based on total monomer, of vinyl monomers copolymerizable therewith, wherein polymerization is carried out in the presence of from 0.01 to 10%, by weight, based on total monomer, of one or more enol ethers derived from aliphatic or cycloaliphatic aldehydes or ketones.

    摘要翻译: 一种聚合甲基丙烯酸甲酯或其混合物的方法,其具有至多25重量%的基于总单体的可与其共聚的乙烯基单体,其中聚合在0.01至10重量%的基础上进行,基于 在一个或多个衍生自脂族或脂环族醛或酮的烯醇醚的总单体上。

    Electrostatographic suspension developer and process for the production
thereof
    2.
    发明授权
    Electrostatographic suspension developer and process for the production thereof 失效
    静电悬浮显影剂及其生产方法

    公开(公告)号:US4521505A

    公开(公告)日:1985-06-04

    申请号:US525625

    申请日:1983-08-23

    IPC分类号: G03G9/12 G03G9/13

    CPC分类号: G03G9/13

    摘要: The suspension developer contains as a toner polymer-sheathed pigment particles in an electrically insulating carrier liquid. The sheath of the pigment particles is formed by precipitation polymerization from various (meth)acrylates, a cross-linker and, optionally, a vinyl or vinylidene monomer. The developer has an outstanding dispersion stability which does not change during use or storage.

    摘要翻译: 悬浮显影剂在电绝缘载体液体中含有调色剂聚合物护套颜料颗粒。 颜料颗粒的鞘通过各种(甲基)丙烯酸酯,交联剂和任选的乙烯基或亚乙烯基单体的沉淀聚合而形成。 开发商具有出色的分散稳定性,在使用或储存期间不会改变。

    New triazolopyrimidines and their use as initiators
    3.
    发明授权
    New triazolopyrimidines and their use as initiators 失效
    新的三唑并嘧啶及其作为引发剂的用途

    公开(公告)号:US4871850A

    公开(公告)日:1989-10-03

    申请号:US141875

    申请日:1988-01-06

    摘要: Triazolopyrimidines of the formula I ##STR1## in which R.sup.1 denotes CN, alkylsulphonyl, arylsulphonyl or arylR.sup.2 denotes H, alkyl or alkythio,R.sup.3 denotes alkyl, aralkyl, substituted aralkyl, alkenyl or alkynyl,R.sup.4 denotes alkyl, aralkyl or aryl, andR.sup.5 denotes alkyl, aralkyl or aryl, orR.sup.4 and R.sup.5, together with the carbon atom, denote a carbocyclic 5-, 6- or 7-membered ring which may be substituted or bridged,in which R.sup.4 cannot be methyl or aryl when R.sup.1 represents CN, R.sup.2 represents H, R.sup.3 represents methyl and R.sup.5 represents methyl or aryl, and in which alkyl preferably has 1-9 C atoms and aryl preferably has 6-12 C atoms, and also a process for their preparation, and their use as initiators.

    摘要翻译: 式I的三唑并嘧啶其中R1表示CN,烷基磺酰基,芳基磺酰基或芳基R2表示H,烷基或链烯基,R3表示烷基,芳烷基,取代的芳烷基,烯基或炔基,R4表示烷基,芳烷基或芳基, R 5表示烷基,芳烷基或芳基,或者R 4和R 5与碳原子一起表示可以被取代或桥连的碳环5-,6-或7-元环,当R 1不为甲基或芳基时,R 1表示 CN,R 2表示H,R 3表示甲基,R 5表示甲基或芳基,并且其中烷基优选具有1-9个C原子,并且芳基优选具有6-12个C原子,并且其制备方法及其作为引发剂的用途 。

    (Meth)-acrylic acid esters
    6.
    发明授权
    (Meth)-acrylic acid esters 失效
    (甲基) - 丙烯酸酯

    公开(公告)号:US4752338A

    公开(公告)日:1988-06-21

    申请号:US858402

    申请日:1986-05-01

    CPC分类号: A61K6/083 C08F20/36

    摘要: (Meth)-acrylic acid esters of the formula ##STR1## in which R.sup.1 and R.sup.2 are each independently hydrogen, chlorine, fluorine or a C.sub.1 - to C.sub.4 -alkyl radical andR.sup.3 and R.sup.4 are identical or different and represent the group ##STR2## wherein Y is a divalent bridge member from the group ##STR3## and Z is a straight-chain or branched hydrocarbon chain which has 2 to 10 carbon atoms, can optionally contain oxygen bridges and is optionally substituted by 1 to 4 acrylate or methacrylate radicals,whereinR.sup.5 represents hydrogen or methyl andR.sup.6 represents hydrogen, C.sub.1 -C.sub.6 - alkyl or phenyl,which are useful as dental materials.

    摘要翻译: (甲基)丙烯酸酯,其中R 1和R 2各自独立地为氢,氯,氟或C 1〜C 4 - 烷基,R 3和R 4相同或不同,表示 其中Y是来自基团的二价桥连构件,Z是具有2至10个碳原子的直链或支链烃链,可以任选地含有氧桥,并且任选被1至4个丙烯酸酯或甲基丙烯酸酯基团取代, 其中R 5表示氢或甲基,R 6表示氢,可用作牙科材料的C 1 -C 6烷基或苯基。

    Dental material based on crosslinked plastic and polymerizable binder
    7.
    发明授权
    Dental material based on crosslinked plastic and polymerizable binder 失效
    基于交联塑料和可聚合粘合剂的牙科材料

    公开(公告)号:US4369262A

    公开(公告)日:1983-01-18

    申请号:US283761

    申请日:1981-07-16

    IPC分类号: A61K6/083 A61K6/08

    CPC分类号: A61K6/083

    摘要: The invention includes dental materials based on organic plastics in paste form, comprising at least one phase consisting essentially of finely divided, crosslinked plastics which contain copolymerized ester(s) of methacrylic acid to the extent of at least 50% by weight, and the second phase consisting essentially of ester(s) of methacrylic acid to the extent of at least 50% by weight. The materials can be used for making prostheses, crowns, bridges, artificial teeth, dental fillings, etc.

    摘要翻译: 本发明包括基于糊状形式的基于有机塑料的牙科材料,其包含至少一个相,其基本上由细碎的交联塑料组成,其中含有至少50重量%程度的甲基丙烯酸的共聚酯,第二相 基本上由甲基丙烯酸酯代表至少50重量%的程度。 这些材料可用于制造假肢,冠,桥,人造牙,牙齿填充物等。

    Ester-urethane derivatives of (meth)-acrylic acid for dental materials
    9.
    发明授权
    Ester-urethane derivatives of (meth)-acrylic acid for dental materials 失效
    用于牙科材料的(甲基)丙烯酸的酯 - 氨基甲酸酯衍生物

    公开(公告)号:US4904750A

    公开(公告)日:1990-02-27

    申请号:US287424

    申请日:1988-12-20

    摘要: Dental fillings, coatings and teeth are formed of polymers and copolymers of a polyfunctional ester-urethane derivative of (meth)-acrylic acid of the formula ##STR1## in which A is a straight-chain or branched aliphatic radical which has 2 to 20 carbon atoms and optionally contains 1 to 3 oxygen bridges, an aromatic radical with 6 to 24 carbon atoms, an araliphatic radical with 7 to 26 carbon atoms or a cycloaliphatic radical with 6 to 26 carbon atoms,r denotes the number of chains starting from A and denotes a number from 2 to 6,R.sup.1 and R.sup.2 are identical and denote hydrogen or are different and denote hydrogen and methyl,n denotes a number from 0 to 5 independently for each chain starting from A,X stands for the group ##STR2## in which Y denotes a divalent (cyclo)aliphatic radical which has 2 to 15 carbon atoms and optionally contains ester, ether or urethane groups,Z denotes a divalent straight-chain or branched aliphatic hydrocarbon radical which has 3 to 15 carbon atoms and can optionally contain 1 to 3 oxygen bridges and can optionally be substituted by 1 to 4 additional (meth)-acrylate radicals andR.sup.3 denotes hydrogen or methyl independently for each chain starting from A.

    摘要翻译: 牙科填充物,涂料和牙齿由式(IMA)(I)的(甲基)丙烯酸的多官能酯 - 氨基甲酸酯衍生物的聚合物和共聚物形成,其中A是直链或支链脂族基团,其具有2 至20个碳原子,并且任选地含有1至3个氧桥,具有6至24个碳原子的芳族基团,具有7至26个碳原子的芳脂族基团或具有6至26个碳原子的脂环族基团,r表示链起始数 从A表示2至6的数,R1和R2相同并且表示氢或不同,表示氢和甲基,n表示从A开始独立地为0至5的数,X表示< IMAGE>其中Y表示具有2至15个碳原子并且任选地含有酯,醚或氨基甲酸酯基团的二价(环)脂族基团,Z表示具有3至15个碳原子的二价直链或支链脂族烃基, ca n任选地含有1至3个氧桥,并且可以任选地被1至4个另外的(甲基)丙烯酸酯基团取代,并且对于从A开始的每个链,R 3表示氢或甲基。