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    Continuous production of ethylene homopolymers
    2.
    发明授权
    Continuous production of ethylene homopolymers 失效

    公开(公告)号：US3702845A

    公开(公告)日：1972-11-14

    申请号：US3702845D

    申请日：1970-02-11

    申请人： BASF AG

    发明人： STEIGERWALD KLAUS ,  BUECHNER OSKAR ,  URBAN FRIEDRICH ,  PFANNMUELLER HELMUT

    IPC分类号： C08F10/00 ,  C08F1/60 ,  C08F1/80 ,  C08F3/04

    CPC分类号： C08F10/00 ,  C08F4/28

    摘要： PRODUCTION OF ETHYLENE HOMOPOLYMERS HAVING A SPECIFIC DENSITY BY POLYMERIZATION OF ETHYLENE UNDER THE ACTION OF ORGANIC PEROXIDES AND OXYGEN AS FREE-RADICAL-GENERATING POLYMERIZATION INITIATORS AND OF POLYMERIZATION MODIFIERS AT ELEVATED TEMPERATURE AND SUPERATMOSPHERIC PRESSURE IN A TUBULAR REACTOR HAVING TWO SUCCESSIVE REACTION ZONES, A MIXTURE OF ETHYLENE, POLYMERIZATION INITIATOR AND POLYMERIZATION MODIFIER BEING INTRODUCED CONTINUOUSLY AT THE BEGINNING OF EACH REACTION ZONE. OXYGEN AS POLYMERIZATION INITIATOR AND A MIXTURE OF A POLYMERIZATION MODIFIER HAVING A SPECIFIC RELATIVELY LOW C5 VALUE AND A POLYMERIZATION MODIFIER HAVING A SPECIFIC RELATIVELY HIGH C5 VALUE ARE USED IN THE FIRST REACTION ZONE, AND AN ORGANIC PEROZIDE HAVING A SPECIFIC HALF VALUE TEMPERATURE AS POLYMERIZATION INITIATOR AND A MIXTURE OF A POLYMERIZATION MODIFIER HAVING A SPECIFIC RELATIVELY LOW C5 VALUE AND A POLYMERIZATION MODIFIER HAVING A SPECIFIC RELATIVELY HIGH POLYMERIZATION MODIFIER HAVING A SPECIFIC RELATIVELY HIGH C5 VALUE ARE EMPLOYED IN THE SECOND REACTION ZONE. THE ETHYLENE HOMOPOLYMERS OBTAINED HAVE A WIDE MOLECULAR WEIGHT DISTRIBUTION AND ARE PRACTICALLY DEVOID OF VERY HIGH MOLECULAR WEIGHT CONSTITUENTS.

    Process for the manufacture of pulverizable thermosetting coating agents
    7.
    发明授权
    Process for the manufacture of pulverizable thermosetting coating agents 失效
    用于制造可粉化的热固性涂层剂的方法

    公开(公告)号：US3867347A

    公开(公告)日：1975-02-18

    申请号：US38222773

    申请日：1973-07-24

    申请人： DEGUSSA

    发明人： FELBER WILFRIED ,  MORLOCK GERHARD

    IPC分类号： C08F2/00 ,  C08F2/02 ,  C08F2/44 ,  C08F220/00 ,  C08F220/12 ,  C08F220/26 ,  C08G18/00 ,  C08G18/62 ,  C08G18/80 ,  C09D5/03 ,  C09D5/46 ,  C09D175/04 ,  D21H19/24 ,  C08F1/80

    CPC分类号： C08G18/6225 ,  C08F220/12 ,  C08G18/8074 ,  C08G2150/20

    摘要： A process for the manufacture of pulverizable, thermosetting coating agents comprising mixtures of acrylate resins containing hydroxyl groups and blocked isocyanates. The blocked isocyanates are di- or polyisocyanates blocked with a lactam having about 412 carbon atoms in the ring. The blocked isocyanates have melting points of about 60*-150* C., and are used in an amount of about 0.1-0.9 equivalents of isocyanate groups based on the hydroxyl group content. The process is useful for preparing agents useful in coating compositions.

    摘要翻译： 制备可粉化的热固性涂层剂的方法，其包含含有羟基的丙烯酸酯树脂和封闭的异氰酸酯的混合物。 封闭的异氰酸酯是在环中具有约4-12个碳原子的内酰胺封端的二异氰酸酯或多异氰酸酯。 封端的异氰酸酯的熔点为约60-150℃，基于羟基含量以约0.1-0.9当量的异氰酸酯基团的用量使用。 该方法可用于制备用于涂料组合物的试剂。

    Process for the polymerization of vinyl chloride
    9.
    发明授权
    Process for the polymerization of vinyl chloride 失效
    氯乙烯聚合方法

    公开(公告)号：US3644317A

    公开(公告)日：1972-02-22

    申请号：US3644317D

    申请日：1968-12-12

    申请人： CHATILLON ITALIANA FIBRE

    发明人： MONACO SERGIO LO ,  MAZZOLINI CORRADO ,  PATRON LUIGI ,  MORETTI ALBERTO

    IPC分类号： C08F14/02 ,  C08F14/06 ,  C08F3/30 ,  C08F1/62 ,  C08F1/80

    CPC分类号： C08F14/02 ,  C08F2/02 ,  C08F14/06

    摘要： IN THE LOW-TEMPERATURE POLYMERIZATION OF VINYL CHLORIDE ALONE, OR IN ADMIXTURE WITH SMALL QUANTITIES OF OTHER COPOLYMERIZABLE MONOMERS, BY USING AS A CATALYST A CATALYTIC SYSTEM COMPRISING AN ORGANIC HYDROPEROXIDE, SULPHUR DIOXIDE AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALCOHOLS, ALCOHOLATES, THEIR DERIVATIVES AND THEIR MIXTURES, IT IS POSSIBLE (ACCORDING TO THE PRESENT INVENTION) TO STOP THE POLYMERIZATION AT THE DESIRED DEGREE OF CONVERSION AND TO AVOID POST-POLYMERIZATION IN THE REACTION MIXTURE AS WELL AS DURING THE RECOVERY OF THE MONOMERS, BY TREATING THE REACTION MIXTURE WITH A WATER-SOLUBLE HYDROXYLAMINE SALT SUCH AS THE HYDROCHLORIDE, SULPHATE, OXALATE, PHOSPHATE OR ACETATE.