Method and system for priming anionic polymerization of (meth)acrylates
    21.
    发明授权
    Method and system for priming anionic polymerization of (meth)acrylates 失效
    引发(甲基)丙烯酸酯阴离子聚合的方法和系统

    公开(公告)号:US5266667A

    公开(公告)日:1993-11-30

    申请号:US777305

    申请日:1991-11-29

    CPC分类号: C08F20/10

    摘要: This system for priming the animic polymerization of (meth)acrylates includes at least one primer of the formula R--M (I) in which M represents a metal selected from alkaline and alkaline earth metals and R represents an alkyl radical with a straight or branched chain containing 2 to 6 atoms of carbon or an aryl radical or an arylalkyl radical. H is characterized in that it further contains at least one organic derivative of an alkaline metal, with the proviso that said organic derivative is neither an alcoholate nor a carboxyl acid ester substituted in position .alpha. by said metal. Applications in the anionic polymerization of (meth)acrylates.

    摘要翻译: PCT No.PCT / FR90 / 00378 Sec。 371日期:1991年11月29日 102(e)1991年11月29日PCT PCT 1990年5月31日PCT公布。 出版物WO90 / 15083 这种用于引发(甲基)丙烯酸酯的动画聚合的该系统包括至少一种式RM(I)的引物,其中M表示选自碱金属和碱土金属的金属,R表示烷基 具有含有2至6个碳原子或芳基或芳基烷基的直链或支链。 H的特征在于它还含有至少一种碱金属的有机衍生物,条件是所述有机衍生物既不是醇化物,也不是由所述金属在α位置取代的羧酸酯。 (甲基)丙烯酸酯阴离子聚合中的应用。

    Anionic polymerization of alkyl (meth)acrylate monomers
    22.
    发明授权
    Anionic polymerization of alkyl (meth)acrylate monomers 失效
    (甲基)丙烯酸烷基酯单体的阴离子聚合

    公开(公告)号:US5681909A

    公开(公告)日:1997-10-28

    申请号:US589371

    申请日:1996-01-22

    CPC分类号: C08F20/12

    摘要: Poly(alkyl (meth)acrylates) are inexpensively prepared, even on an industrial scale, by anionically polymerizing at least one alkyl (meth)acrylate monomer in the presence of a lithium-based initiator and in a liquid solvent medium in which the solubility parameter .delta. is less than 20, said initiator comprising an alcoholate having the formula ROLi, wherein R has the formula R.sup.1 (OR.sup.2).sub.m, in which R.sup.1 is a linear or branched alkyl radical having from 2 to 4 carbon atoms, R.sup.2 is a linear or branched alkylene radical having from 2 to 4 carbon atoms, and m is 1, 2 or 3.

    摘要翻译: 聚((甲基)丙烯酸烷基酯)通过在锂基引发剂的存在下,通过阴离子聚合至少一种(甲基)丙烯酸烷基酯单体,在工业规模上廉价地制备,其中溶解度参数 所述引发剂包括具有式ROLi的醇化物,其中R具有式R 1(OR 2)m,其中R 1是具有2至4个碳原子的直链或支链烷基,R 2是直链或 具有2至4个碳原子的支链亚烷基,m为1,2或3。

    Initiation system for the anionic polymerization of (meth)acrylic
monomers
    23.
    发明授权
    Initiation system for the anionic polymerization of (meth)acrylic monomers 失效
    (甲基)丙烯酸单体阴离子聚合引发体系

    公开(公告)号:US5677387A

    公开(公告)日:1997-10-14

    申请号:US476253

    申请日:1995-06-07

    CPC分类号: C08F297/026

    摘要: A diblock copolymer obtained by polymerizing acrylic, methacrylic or nonacrylic vinyl monomers in the presence of a polymerization initiating amount of an initiation system including (1) at least one functional initiator and (2) an alkali metal alcoholate. The alcoholate has the formula: R'OM' in which M' is an alkali metal and R' has the formula: R.sup.1 (OR.sup.2).sub.m in which R.sup.1 is a linear or branched alkyl radical containing from 1 to 6 carbon atoms or an arylalkyl radical, R.sup.2 is a linear or branched alkylene radical containing from 2 to 4 carbon atoms, and m is the integer 1, 2 or 3.

    摘要翻译: 在聚合引发量的引发体系存在下,通过聚合丙烯酸,甲基丙烯酸或非丙烯酸乙烯基单体获得的二嵌段共聚物,包括(1)至少一种官能引发剂和(2)碱金属醇化物。 醇化物具有下式:R'OM',其中M'是碱金属,R'具有式:R 1(OR 2)min,其中R 1是含有1至6个碳原子的直链或支链烷基或芳基烷基 ,R2是含有2至4个碳原子的直链或支链亚烷基,m是整数1,2或3。

    Initiating process and system for the anionic polymerization of acrylic
monomers
    25.
    发明授权
    Initiating process and system for the anionic polymerization of acrylic monomers 失效
    用于丙烯酸单体的阴离子聚合的引发方法和系统

    公开(公告)号:US5629393A

    公开(公告)日:1997-05-13

    申请号:US91403

    申请日:1993-07-14

    摘要: The initiating system for the anionic polymerization of acrylic monomers, and where necessary, vinyl comonomers, including at least one R-M initiator in which M=a metal chosen from among the alkaline and alcaline earth metals and R=an alkyl with a linear or branched chain at C.sub.2 -C.sub.6 or aryl or arylalkyl, is characterized by the fact that the polymerization takes place in the presence also of at least one R.sub.1 OM.sub.1 alkaline metal alcoholate, in which R=an alkyl with a linear or branched chain at C.sub.1 -C.sub.6 or aryl or aryalkyl and M.sub.1 =an alkaline metal, on condition that when M.sub.1 is lithium, then R=an aryl or arylalkyl. Said process for the polymerization of primary, secondary, or tertiary alkyl acrylates, and possibly of vinyl comonomers, is characterized by the fact that the polymerization takes place in the presence of an initiating system as described above.

    摘要翻译: 用于丙烯酸单体的阴离子聚合的引发体系,以及必要时的乙烯基共聚单体,包括至少一种RM引发剂,其中M =选自碱金属和碱土金属的金属,R =具有直链或支链的烷基 在C2-C6或芳基或芳基烷基上,其特征在于聚合反应在还存在至少一种R1OM1碱金属醇化物的情况下进行,其中R =在C 1 -C 6或芳基上具有直链或支链的烷基 或烷基,M1 =碱金属,条件是当M1为锂时,R =芳基或芳基烷基。 用于聚合丙烯酸伯,仲或叔烷基酯和可能的乙烯基共聚单体的所述方法的特征在于聚合在如上所述的引发体系存在下进行。

    Heat-resistant maleimido polymers/block copolymers

    公开(公告)号:US5591816A

    公开(公告)日:1997-01-07

    申请号:US167032

    申请日:1993-12-16

    CPC分类号: C08F297/026 C08F122/40

    摘要: Novel N-substituted maleimide homopolymers having a number-average molecular weight ranging from 12,000 to about 100,000 are prepared by anionically polymerizing an N-substituted maleimide monomer, in solvent phase, in the presence of at least one organometallic polymerization initiator which comprises sec-butyllithium, a sodium alcoholate, diphenylmethylpotassium, naphthalenelithium or naphthalenesodium, and novel N-substituted maleimide homopolymers having a polydispersity index ranging from 1.1 to 1.5 are prepared by anionically polymerizing an N-substituted maleimide monomer, in solvent phase, in the presence of at least one alkali metal organometallic polymerization initiator and at least one inorganic or organic salt of an alkali or alkaline earth metal; novel block copolymers include blocks of the above maleimido homopolymers and, e.g., blocks of an acrylic or methacrylic polymer.

    Heat-resistant maleimido polymers/block copolymers
    27.
    发明授权
    Heat-resistant maleimido polymers/block copolymers 失效
    耐热马来酰亚胺聚合物/嵌段共聚物

    公开(公告)号:US5294674A

    公开(公告)日:1994-03-15

    申请号:US804674

    申请日:1991-12-10

    CPC分类号: C08F297/026 C08F122/40

    摘要: Novel N-substituted maleimide homopolymers having a number-average molecular weight ranging from 12,000 to about 100,000 are prepared by anionically polymerizing an N-substituted maleimide monomer, in solvent phase, in the presence of at least one organometallic polymerization initiator which comprises sec-butyllithium, a sodium alcoholate, diphenylmethylpotassium, naphthalenelithium or naphthalenesodium, and novel N-substituted maleimide homopolymers having a polydispersity index ranging from 1.1 to 1.5 are prepared by anionically polymerizing an N-substituted maleimide monomer, in solvent phase, in the presence of at least one alkali metal organometallic polymerization initiator and at least one inorganic or organic salt of an alkali or alkaline earth metal; novel block copolymers include blocks of the above maleimido homopolymers and, e.g., blocks of an acrylic or methacrylic polymer.

    摘要翻译: 通过在至少一种有机金属聚合引发剂的存在下,在溶剂相中阴离子聚合N-取代的马来酰亚胺单体,制备数均分子量为12,000至约100,000的新型N-取代的马来酰亚胺均聚物,该有机金属聚合引发剂包括仲丁基锂 ,醇钠,二苯基甲基钾,萘锂或萘钠,以及分子量指数为1.1〜1.5的新型N-取代马来酰亚胺均聚物,是通过在溶剂相中,在至少一种 碱金属有机金属聚合引发剂和至少一种碱金属或碱土金属的无机或有机盐; 新的嵌段共聚物包括上述马来酰亚胺均聚物的嵌段和例如丙烯酸或甲基丙烯酸聚合物的嵌段。

    Star-shaped copolymers and process for their manufacture
    29.
    发明授权
    Star-shaped copolymers and process for their manufacture 失效
    星形共聚物及其制造方法

    公开(公告)号:US5756585A

    公开(公告)日:1998-05-26

    申请号:US383437

    申请日:1995-02-03

    IPC分类号: C08F297/02

    CPC分类号: C08F297/026

    摘要: A process for manufacturing a star shaped block polymer of formula (PA--PB--PC).sub.n --N--(PD--PE).sub.m wherein PA, PB and PC are respectively vinylaromatic/methacrylic blocks, acrylic blocks and methacrylic blocks. PD is a polymer block selected from vinylaromatic and/or methacrylic monomer units, PE is an acrylic polymer block, n is 2 to 20 and m is 0 to 18 with the proviso that m+n is .ltoreq.20. The process proceeds by anionic polymerization in the presence of a monofunctional initiator of formula (II), (R).sub.p --M wherein M is an alkali or alkaline earth metal, p is 1 or 2 and R is a straight or branched alkyl radical having 2 to 6 carbon atoms or a C.sub.1 to C.sub.6 substituted alkyl radical.

    摘要翻译: 制备式(PA-PB-PC)n-N-(PD-PE)m的星形嵌段聚合物的方法,其中PA,PB和PC分别是乙烯基芳族化合物/甲基丙烯酸酯嵌段,丙烯酸嵌段和甲基丙烯酸酯嵌段。 PD是选自乙烯基芳族化合物和/或甲基丙烯酸单体单元的聚合物嵌段,PE是丙烯酸类聚合物嵌段,n为2至20,m为0至18,条件是m + n为20。 该方法在式(II)的单官能引发剂,(R)p-M的存在下进行阴离子聚合,其中M为碱金属或碱土金属,p为1或2,R为直链或支链烷基,具有2 至6个碳原子或C 1至C 6取代的烷基。

    Highly syndiotactic PMMA polymers
    30.
    发明授权
    Highly syndiotactic PMMA polymers 失效
    高度间同立构的PMMA聚合物

    公开(公告)号:US5656704A

    公开(公告)日:1997-08-12

    申请号:US466126

    申请日:1995-06-06

    CPC分类号: C08F20/14

    摘要: Mechanically strong; heat-resistant and transparent PMMA polymers having a high content of syndiotactic triads, a number average molecular weight ranging from 5,000 to 500,000 and a polydispersity index ranging from 1.01 to 1.5, are prepared by anionically polymerizing methyl methacrylate, characteristically at a temperature of at least 0.degree. C., in the presence of (a) at least one organolithium or organosodium initiator and (b) at least one AlR.sup.1 R.sup.2 R.sup.3 ligand, for example at least one di- or tri-phenoxy alkyl aluminum compound.

    摘要翻译: 机械强 通过阴离子聚合甲基丙烯酸甲酯制备具有高含量的间同立构三单元组,数均分子量为5,000至500,000和多分散指数为1.01至1.5的耐热和透明的PMMA聚合物,特征在于至少 在(a)至少一种有机锂或有机钠引发剂存在下,和(b)至少一种AlR1R2R3配体,例如至少一种二 - 或三 - 苯氧基烷基铝化合物。