公开(公告)号：US5177167A

公开(公告)日：1993-01-05

申请号：US465180

申请日：1990-02-22

申请人： Seiji Tone ,  Hiroshi Mori ,  Naoki Yamamoto ,  Haruko Takeda ,  Masahiro Sugimori

发明人： Seiji Tone ,  Hiroshi Mori ,  Naoki Yamamoto ,  Haruko Takeda ,  Masahiro Sugimori

IPC分类号： A61L27/18 ,  C08F293/00 ,  C08L53/00 ,  C08L55/00 ,  C09D153/00 ,  G02B1/04

CPC分类号： G02B1/043 ,  A61L27/18 ,  C08F293/005 ,  C08L53/00 ,  C08L55/005 ,  C09D153/00 ,  Y10T428/2913

摘要： The present invention provides shaped articles having good transparency and high oxygen permeability in a specific direction thereof, which have been made from a block copolymer (a) composed of a polyalkyl methacrylate segment and a silicone-based polymethacrylate segment, or a block copolymer (b) or graft copolymer (c) containing a polyorganosiloxane as one component, according to a process permitting the creation of a specific higher-order structure. These shaped articles have high oxygen permeability at relatively low silicone contents and, therefore, can provide oxygen-permeable products having high tear strength and surface hardness.

公开(公告)号：US5187244A

公开(公告)日：1993-02-16

申请号：US381864

申请日：1989-07-19

申请人： Masahiro Sugimori ,  Haruko Takeda ,  Seiji Tone

发明人： Masahiro Sugimori ,  Haruko Takeda ,  Seiji Tone

IPC分类号： C08F279/02 ,  C08F290/06 ,  C08F293/00 ,  C08F297/02 ,  C08G77/42 ,  C08G77/442

CPC分类号： C08G77/442 ,  C08F290/068 ,  C08F293/00

摘要： A preparation process of block copolymers which comprises conducting living polymerization of a (meth)acrylic ester substantially in the absence of water, by using a macromolecular compound having a functional end group represented by the formula (1): ##STR1## Wherein R is H or an n-alkyl group having from 1 to 3 carbon atoms and R' is H or an alkyl group having from 1 to 6 carbon atoms, as a polymerization initiator and in the presence of a Lewis acid or in the presence of a donor compound of an anion selected from HF.sub.2.sup.-, (CH.sub.3).sub.3 SiF.sub.2.sup.- or F.sup.-, as well as novel block copolymers prepared therefrom are disclosed.

公开(公告)号：US5053461A

公开(公告)日：1991-10-01

申请号：US399992

申请日：1989-08-29

申请人： Seiji Tone ,  Haruko Takeda ,  Masahiro Sugimori

发明人： Seiji Tone ,  Haruko Takeda ,  Masahiro Sugimori

IPC分类号： C08F265/06 ,  C08F290/04 ,  C08L33/12 ,  C08L51/00

CPC分类号： C08L33/12 ,  C08F265/06 ,  C08F290/046 ,  C08L51/00

摘要： A comb copolymer consisting of a methacrylic macromonomer as a branch ingredient and acrylic ester as a backbone ingredient and being suitable for an acrylic elastomer material which is excellent in transparency, weatherability and mechanical strength; an impact resistant acrylic resin composition obtained by blending the above comb copolymer with a PMMA (co)polymer; and a comb copolymer similarly consisting of a methacrylic macromonomer as a branch component and acrylic ester as a backbone component and being an acrylic resin which is excellent in transparency, weatherability, gloss and light resistance, are disclosed in this invention.Preparation methods of the high molecular weight comb compolymers useful for molding materials comprising the above mentioned comb copolymers are disclosed. The disclosed preparation methods comprise, in the copolymerization of the macromonomer having a vinyl group at one end of the main chain with a vinyl monomer, conducting aqueous suspension polymerization of the monomer mixture in the presence of an initiator in a solvent which is a good solvent for the macromonomer and has a solubility of 10% by weight or more in water at 30.degree. C., or conducting aqueous suspension polymerization of the monomer mixture in the presence of an initiator in a halogenated hydrocarbon solvent which is a good solvent for the macromonomer and has an azeotropic point with water raning from 30.degree. to 90.degree. C. at a temperature above said azeotropic point.

公开(公告)号：US5164452A

公开(公告)日：1992-11-17

申请号：US359704

申请日：1989-05-31

申请人： Seiji Tone ,  Haruko Takeda ,  Masahiro Sugimori

发明人： Seiji Tone ,  Haruko Takeda ,  Masahiro Sugimori

IPC分类号： C09K3/16 ,  C08F8/44 ,  C08F287/00 ,  C08F297/02 ,  C08F297/06 ,  C08F297/08

CPC分类号： C08F287/00 ,  C08F297/026

摘要： An antistatic agent capable of imparting a permanent antistatic property to a methacrylic resin is prepared as follows. First, an alkyl methacrylate is subjected to living polymerization in an atmosphere substantially free of water in the pressure of at least one compound acting as a source for supplying an anion selected from HF.sub.2.sup.-, (CH.sub.3).sub.3 SiF.sub.2.sup.- and F.sup.- by using as an initiator a compound represented by the formula (I) or (II): ##STR1## wherein R is H or CH.sub.3 and R.sup.1 is H or alkyl; second, a methacrylic acid ester comprising at least 80 mole % of a methacrylic acid ester represented by the formula (III): ##STR2## wherein R.sup.2 is alkyl and m is from 1 to 6, is subjected to living polymerization in the presence of the polymer obtained in the first step, to prepare a di-block or tri-block copolymer; and then, amino groups of segments derived from the methacrylic acid ester of the formula (III) in the block copolymer are quaternized.

公开(公告)号：US5116910A

公开(公告)日：1992-05-26

申请号：US711950

申请日：1991-06-07

申请人： Seiji Tone ,  Haruko Takeda ,  Masahiro Sugimori

发明人： Seiji Tone ,  Haruko Takeda ,  Masahiro Sugimori

IPC分类号： C08F265/06 ,  C08F290/04 ,  C08L33/12 ,  C08L51/00

CPC分类号： C08L33/12 ,  C08F265/06 ,  C08F290/046 ,  C08L51/00

摘要： A comb copolymer consisting of a methacrylic macromonomer as a branch ingredient and acrylic ester as a backbone ingredient and being suitable for an acrylic elastomer material which is excellent in transparency, weatherability and mechanical strength; an impact resistant acrylic resin composition obtained by blending the above comb copolymer with a PMMA (co)polymer; and a comb copolymer similarly consisting of a methacrylic macromonomer as a branch component and acrylic ester as a backbone component and being an acrylic resin which is excellent in transparency, weatherability, gloss and light resistance, are disclosed in this invention.Preparation methods of the high molecular weight comb copolymers useful for molding materials comprising the above mentioned comb copolymers are disclosed. The disclosed preparation methods comprise, in the copolymerization of the macromonomer having a vinyl group at one end of the main chain with a vinyl monomer, conducting aqueous suspension polymerization of the monomer mixture in the presence of an initiator in a solvent which is a good solvent for the macromonomer and has a solubility of 10% by weight or more in water at 30.degree. C., or conducting aqueous suspension polymerization of the monomer mixture in the presence of an initiator in a halogenated hydrocarbon solvent which is a good solvent for the macromonomer and has an azeotropic point with water ranging from 30.degree. to 90.degree. C. at a temperature above said azeotropic point.