公开(公告)号：JP3323276B2

公开(公告)日：2002-09-09

申请号：JP9440493

申请日：1993-04-21

IPC: C08F2/02 ,  C08F2/38 ,  C08F20/10 ,  C08F220/04 ,  C08F220/06 ,  C08F220/10 ,  C08F220/18 ,  C08F220/28 ,  C09J7/02 ,  C09J133/02 ,  C09J133/14

公开(公告)号：JP2002241575A

公开(公告)日：2002-08-28

申请号：JP2001040255

申请日：2001-02-16

Applicant: MITSUBISHI RAYON CO

Inventor： NAGABUCHI YOSHIHIDE ,  SASAKI AKINOBU ,  HIROMOTO YASUO ,  YOSHIMURA HISAAKI ,  MIZOTA HIROTOSHI ,  TAJIRI TAKAYUKI

IPC: G03G9/087 ,  C08F2/02 ,  C08L57/00

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a binder resin for a toner in which two or more kinds of polymers are uniformly mixed even without using a solvent, and to obtain the binder resin for the toner available by the method for production. SOLUTION: This method for producing the binder resin for the toner comprises a mixing step of mixing (B) a polymer component obtained by polymerizing (A) a vinylic monomer with (D) a partial polymer prepared by polymerizing (C) a vinylic monomer and having

公开(公告)号：JP3305690B2

公开(公告)日：2002-07-24

申请号：JP2000007364

申请日：2000-01-17

IPC: C07D279/20 ,  C08F20060101 ,  C08F2/00 ,  C08F2/02 ,  C08F2/16 ,  C08F2/18 ,  C08F2/24 ,  C08F2/44 ,  C08F14/00 ,  C08F14/06 ,  C08K5/45

公开(公告)号：JP2002520430A

公开(公告)日：2002-07-09

申请号：JP2000559163

申请日：1999-07-02

IPC: C08L23/00 ,  B01F17/00 ,  C08F2/02 ,  C08F20/04 ,  C08F22/06 ,  C08F220/06 ,  C08F220/18 ,  C09D133/04 ,  C09G1/16 ,  C09J133/04 ,  D21H17/28 ,  D21H17/37 ,  D21H21/16

公开(公告)号：JP2002128807A

公开(公告)日：2002-05-09

申请号：JP2000328205

申请日：2000-10-27

Applicant: NIPPON SYNTHETIC CHEM IND

Inventor： NAGAO YOSHIHARU

IPC: C08F2/00 ,  C08F2/02 ,  C08F2/06 ,  C08F210/02 ,  C08F218/08

Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing an ethylene-vinyl acetate copolymer of which the formation of scales and gels are restrained. SOLUTION: This continuous polymerization of ethylene and vinyl acetate using a polymerization tank having a cooling means of a jacket and/or a coil, is carried out in a way that satisfies relationship of formula (1): A

公开(公告)号：JP3277583B2

公开(公告)日：2002-04-22

申请号：JP1536293

申请日：1993-02-02

IPC: C08F2/00 ,  C08F2/02 ,  C08F6/00 ,  C08F20/00 ,  C08F20/12 ,  C08F20/14

公开(公告)号：JP2002114803A

公开(公告)日：2002-04-16

申请号：JP2000305722

申请日：2000-10-05

Applicant: JAPAN POLYCHEM CORP

Inventor： MOGI MANABU ,  TAYANO TAKAO ,  MAEDA YOICHI ,  YUGAWA KIYOSHI ,  KATO HIDEKI

IPC: C08F2/00 ,  C08F2/02 ,  C08F210/06

Abstract: PROBLEM TO BE SOLVED: To provide a method for polymerizing a propylene-based random copolymer, capable of stably carrying out an operation for a long period of time without attaching a polymer to the wall surface of a reactor in producing a low-melting propylene-based random copolymer. SOLUTION: This method for producing a propylene-based random copolymer is characterized in that in a method for producing a propylene-based random copolymer by copolymerizing propylene with an α-olefin in the presence of a metallocene-based catalyst using a polymerizer having a temperature-control jacket, the operation is performed in a state in which the level of a vapor-liquid interface during stirring is kept at the upper edge of the temperature-control jacket or lower than it.

公开(公告)号：JP3246995B2

公开(公告)日：2002-01-15

申请号：JP27520193

申请日：1993-11-04

IPC: C08F2/02 ,  C08F2/44 ,  C08F20/00

公开(公告)号：JP2001342263A

公开(公告)日：2001-12-11

申请号：JP2001075742

申请日：2001-03-16

Applicant: SUMITOMO CHEMICAL CO

Inventor： MORISADA IKUO ,  MANABE KENJI

IPC: G02B1/04 ,  C08F2/02 ,  C08F220/14 ,  C08J5/00

Abstract: PROBLEM TO BE SOLVED: To obtain both a resin molding for an optical material having improved hygroscopicity and high optical characteristics and a light guide plate using the same. SOLUTION: This resin molding for an optical material is characterized in that the resin molding comprises a copolymer consisting essentially of methyl methacrylate and a styrerenic monomer and has

公开(公告)号：JP2001247606A

公开(公告)日：2001-09-11

申请号：JP2000063401

申请日：2000-03-08

Applicant: JAPAN POLYCHEM CORP

Inventor： MATSUDA YUKIMASA ,  DOI NAOKI ,  YAMAMOTO SADAHIRO

IPC: C08F2/02 ,  C08F2/01 ,  C08F10/00

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing an α-olefin polymer capable of achieving a decrease in slurry pump performance degradation, inhibiting cavitation in the pump, preventing reduction in pump transportation capacity, or the like. SOLUTION: The method for producing an α-olefin polymer, wherein a polymerization tank is used for the slurry polymerization on bulk polymerization of an α-olefin in the presence of a stereospecific catalyst and wherein the heat of polymerization is removed by the user of latent heat of vaporization resulting from the evaporation of an evaporating substance, is characterized, during the process of drawing slurry out of the polymerization tank by the use of a slurry pump, in that the vaporization linear velocity (UG) of the evaporation substance in the tank by the superficial velocity base is 1.0-4.0 cm/sec, that the content of air cells in the evaporating substance at the suction port of the pump is not more than 25 vol.%, and that the pump is operated at an agitating revolution number not less than 0.80 times the minimum agitating revolution number that keeps constant the ratio of the upper level concentration of solid particles to the lower level concentration of the same in the slurry in the tank.