Superior solvent blends for synthesis of acrylic resins for high solids coatings
    2.
    发明公开
    Superior solvent blends for synthesis of acrylic resins for high solids coatings 无效
    用于合成高固体涂料的丙烯酸树脂的超级溶剂混合物

    公开(公告)号:EP0099647A3

    公开(公告)日:1984-02-29

    申请号:EP83303454

    申请日:1983-06-15

    CPC分类号: C08F220/12 C08F220/28

    摘要: An improved method for providing acrylic copolymer resins is provided in which the polymerization solvent comprises a blend of methyl isobutyl ketone and alkyl-substituted benzenes. The monomers comprise hydroxy-substituted alkyl (meth)acrylate monomers and non-hydroxy substituted alkyl (meth)acrylate monomers, and the process provides an improved method for forming low molecular weight acrylic resins useful as components in acrylic coatings. The polymerization solvent can remain in the resin to become a solvent employed in the higher solids coating containing the thus-formed acrylic resins and provides improved electrical resistivity, improved solvency and decreased surface tensions over prior art polymerization solvents.

    Radical polymerisation process and additives for synthetic resins so prepared
    3.
    发明公开
    Radical polymerisation process and additives for synthetic resins so prepared 失效
    合成树脂的自动聚合方法和添加剂的制备

    公开(公告)号:EP0035729A3

    公开(公告)日:1981-10-14

    申请号:EP81101487

    申请日:1981-03-02

    IPC分类号: C08F02/06 C08L57/00

    摘要: Verfahren zur radikalischen Polymerisation von Acrylund Methacrylsäure, deren Estern und Amiden, Acrylnitril und Styrol, unter Verwendung eines flüssigen Mediums, das eine Schmelze von bei Raumtemperatur festen organischen Ver bindungen, vorzugsweise gesättigten oder ungesättigten, geradkettigen oder verzweigten Fettsäuren mit bis zu 30 (8 bis 26) C-Atomen beziehungsweise deren Derivaten (Ester, Amide, Fettalkohole) mit Tropfpunkten zwischen 25 und 120 (40 bis 110)° C ist. Das Gewichtsverhältnis von Monomeren zu den festen organischen Verbindungen soll 10 bis 90 : 90 bis 10 (25 bis75 : 75 bis 25) betragen.
    Das Verfahren erlaubt die direkte Herstellung von Kunst stoffadditiven für die Kunststoffverarbeitung, speziell für die Verarbeitung von elasomeren, thermoplastischen Polymeri saten und Duroplasten, insbesondere durch Warmverfor mung dar.

    摘要翻译: 使用液体介质丙烯酸和甲基丙烯酸,其酯和酰胺,丙烯腈和苯乙烯的自由基聚合的方法,该液体介质是在室温下为固体,优选饱和或不饱和的直链或 具有至多30(8至26)个碳原子的支链脂肪酸或其衍生物(酯,酰胺或脂肪醇),其滴点为25至120℃(40至110℃)。 单体和固体有机化合物之间的重量比为10至90:90至10(25至75:75至25)。 该方法允许直接制备用于塑料加工的塑料添加剂,特别是用于加工弹性体,热塑性聚合物和热固性材料,特别是通过热成型。

    Shaped hydrogel articles
    4.
    发明公开
    Shaped hydrogel articles 失效
    形状的水文文章

    公开(公告)号:EP0182659A3

    公开(公告)日:1988-07-13

    申请号:EP85308439

    申请日:1985-11-20

    申请人: VISTAKON, INC.

    IPC分类号: C08F02/06 G02B01/04 C08J03/02

    摘要: A method forming shaped hydrogel articles such as soft contact lenses wherein hydrophilic monomers are mixed with an inert diluent prior to polymerization, and the diluent is replaced with water following the polymerization. Diluents yielding optically clear hydrogels with good mechanical properties are selected on the basis of their viscosity and their Hanson cohesion parameters relative to the cohesion parameters of the polymeric component of the hydrogel.

    Process for grafting unsaturated monomers on olefinic polymers
    6.
    发明公开
    Process for grafting unsaturated monomers on olefinic polymers 失效
    在烯烃聚合物上收集不饱和单体的方法

    公开(公告)号:EP0187659A3

    公开(公告)日:1987-04-22

    申请号:EP86100151

    申请日:1986-01-08

    申请人: AUSIMONT S.p.A.

    CPC分类号: C08F255/02 C08F291/00

    摘要: Ethylenically unsaturated monomers are grafted on homo- and olefinic co-polymers by means of a radicalic reaction, operating at between 60°C and 160°C, in a solution of the polymer in a solving medium consisting of, or predominantly comprising a mixture of a component (A), chosen between aliphatic hydrocarbons, aromatic hydrocarbons, esters and ethers containing at least one aromatic or cycloaliphatic group, with a component (B) consisting of an aliphatic, cycloaliphatic or aromatic ketone, and by separating at the end of the reaction the grafted polymer, by means of the cooling down of the solution to a temperature below 40°C.

    Poly-diisopropenyl benzene synthesis
    8.
    发明公开
    Poly-diisopropenyl benzene synthesis 失效
    聚对二苯乙烯合成

    公开(公告)号:EP0128851A3

    公开(公告)日:1986-07-02

    申请号:EP84630074

    申请日:1984-05-04

    发明人: Jalics, George

    IPC分类号: C08F12/34 C08F02/06

    CPC分类号: C08F12/34

    摘要: It has been unexpectedly found that meta-diisopropenyl benzene can be polymerized into poly-m-diisopropenyl benzene with a relatively narrow molecular weight distribution and with only a small degree of crosslinking (gel formation) if done in the presence of at least one alpha-olefin containing from 2 to 12 carbon atoms in tetrahydrofuran (solvent) at low temperatures employing an alkyl lithium initiator. The poly-m-diisopropenyl benzene produced by employing this technique has an isopropenyl moiety on almost every diisopropenyl benzene repeat unit in the polymer. This polymer is particularly useful since its pendant isopropenyl groups can be further reacted with other compounds leading to polymers with various functionalities. This technique can also be employed in the synthesis of copolymers containing repeat units derived from meta-diisopropenyl benzene and one or more other monomers. The copolymers synthesized using the process of this invention contain an essentially quantitative number of unreacted isopropenyl groups on the meta-diisopropenyl benzene repeat units in the polymer chain.