公开(公告)号：JP2000080109A

公开(公告)日：2000-03-21

申请号：JP24875498

申请日：1998-09-02

Applicant: KAO CORP

Inventor： TSUJI MAKOTO ,  IGARASHI TADASHI ,  AMIYA TSUYOSHI

IPC: C08F2/00 ,  C08F2/32 ,  C08F20/04

Abstract: PROBLEM TO BE SOLVED: To obtain a water-absorbent resin having a good time stability in a water-contg. state by specifying the total amt. of a polymn. initiator used based on the amt. of a monomer and by changing the addition conditions of the initiator within a time from the beginning to the end of the polymn. SOLUTION: The total amt. of a polymn. initiator is set at 0.01-10 pts.wt. based on 100 pts.wt. water-soluble monomer. At least 1/4 of the total amt. of the initiator is added before the monomer conversion reaches 50%. The rate of addition of the initiator to the polymn. system is changed at least once within a time from the begining to the end of the polymn. (excluding the starting time and ending time of the polymn.). The highly water-absorbent resin is prepd. by supplying a water-soluble monomer or its water soln. into a dispersion medium contg. a hydrophobic org. solvent and subjecting the monomer or soln. to reversed phase suspension polymn. in the presence of an ionic surfactant. Azoic polymn. initiators and oxidative polymn. initiators, such as 2,2'-azobis(2- amidinopropane)dihydrohalide, are listed as the polymn. initiator.

公开(公告)号：JPH0790016A

公开(公告)日：1995-04-04

申请号：JP23940893

申请日：1993-09-27

Applicant: KAO CORP

Inventor： NAKAMURA GENICHI ,  AMIYA TSUYOSHI

IPC: C08F8/00 ,  C08F110/02

Abstract: PURPOSE:To obtain a new polyethylene modified with fluorinated alkyl and having excellent oil and water repellecies in high yield and purity by producing a living polyethylene using an alkyllithium/t-diamine initiator and successively reacting the product with two specific kinds of compounds. CONSTITUTION:Ethylene is subjected to living polymerization in the presence of an initiator consisting of a 1-6C straight or a branched alkyllithium (e.g. methyllithium) and a t-diamine (preferably tetramethylethylenediamine, etc.). The polymerization product is reacted with a formic acid ester preferably by slowly adding the ester little by little to the system and then with a fluorinated alkylcarboxylic acid halide of a formula I (Rf is a 2-17C perfluoroalkyl or a perfluoropropylene oxide oligomer having a polymerization degree of 2-5) (e.g. perfluorooctanoic acid fluoride) to obtain the objective polyethylene of formula II (R1 is a 1-6C straight or branched saturated hydrocarbon chain; (m) and (n) are 10-1,000).

公开(公告)号：JPH06329721A

公开(公告)日：1994-11-29

申请号：JP11736993

申请日：1993-05-19

Applicant: KAO CORP

Inventor： NAKAMURA GENICHI ,  ITO KOJI ,  AMIYA TSUYOSHI

IPC: C08F8/28

Abstract: PURPOSE:To produce a highly polar, highly reactive new polyethylene having one molecular terminal modified with a hydroxyl group, etc., in high yield with a high degree of terminal modification. CONSTITUTION:Ethylene is subjected to living polymn. using a 1-6C linear or branched alkyllithium/tert. diamine initiator, reacted with a specific carbonyl compd., and, if necessary, neutralized with an acid to give a polyethylene having one modified molecular terminal of the formula wherein A is H or an alkali metal; n is an integer of 1-1,000; R1 is a 1-6C linear or branched satd. hydrocarbon group; and R2 and R3 are each H or a 1-18C aliph. or arom. hydrocarbon group provided that they may be the same or different and that they are not simultaneously H.

公开(公告)号：JPH06329720A

公开(公告)日：1994-11-29

申请号：JP12285693

申请日：1993-05-25

Applicant: KAO CORP

Inventor： ITO KOJI ,  NAKAMURA GENICHI ,  AMIYA TSUYOSHI

IPC: C08F8/24 ,  C08F8/00 ,  C08F290/04

Abstract: PURPOSE:To produce, in a high yield, a new high-purity polyethylene macromonomer which has a terminal (meth)acryloyl group and can be copolymerized with another vinyl monomer to give a comb-type graft polymer suitable as a polymer blend compatibilizer, a surface modifier, etc. CONSTITUTION:Ethylene is subjected to living polymn. using a 1-6C linear or branched alkyllithium/tert. diamine initiator, reacted with a specific carbonyl compd. or oxidized with oxygen, and reacted with a (meth)acrylic acid halide to give a polyethylene macromonomer of the formula (wherein R1 is a 1-6C linear or branched satd. hydrocarbon group; R2 and R3 are each H or a 1-18C aliph. or arom. hydrocarbon group provided R1, R2, and R3 are the same or different from each other; R4 is H or methyl; and n is an integer of 10-1,000).

公开(公告)号：JPH04148929A

公开(公告)日：1992-05-21

申请号：JP27486290

申请日：1990-10-12

Applicant: KAO CORP

Inventor： HOSOKAWA YASUTOKU ,  SUZUKI FUMITO ,  AMIYA TSUYOSHI ,  YASUDA YUTAKA

IPC: B65D1/00 ,  B29C49/22 ,  B29K67/00 ,  B29L9/00 ,  B29L22/00 ,  B32B1/02 ,  B32B27/36 ,  B65D1/02

Abstract: PURPOSE:To obtain a multilayer plastic container having transparency and excellent in barrier properties to gas, water vapor and ultraviolet rays by forming the container consisting of two layers of a thermoplastic polyester layer which has ethylene terephthalate as a main repeating unit, and a thermoplastic polyester layer containing ethylene naphthalate. CONSTITUTION:In this process for producing a multilayer plastic container, a preform (preliminarily molded article) consisting of at least two layers of a thermoplastic polyester layer (layer A) which has the main repeating unit of 90mol% or more ethylene terephthalate as a repeating unit, and a thermoplastic polyester layer (layer B) which has 5-90mol% ethylene naphthalate as a repeating terminal, is molded by injection molding and then blow-molded to be oriented at least in an uniaxial direction in a temperature range of 80-120 deg.C. The multilayer plastic container thus produced is uniform in its thickness, has transparency and is further excellent in barrier properties to gas, such as an oxygen gas and a carbonic acid gas, or to water vapor, and also in barrier properties to ultraviolet rays. In particular, the container can be suitably utilized as a foodstuff packaging container.

公开(公告)号：JPH08127725A

公开(公告)日：1996-05-21

申请号：JP27939694

申请日：1994-11-14

Applicant: KAO CORP

Inventor： AMIYA TSUYOSHI ,  MIYANAGA SEIICHI ,  HANADA YOKO

IPC: C08K5/04 ,  A61L15/20 ,  C08K5/07 ,  C08K5/09 ,  C08K5/098 ,  C08K5/10 ,  C08K5/11 ,  C08K5/17 ,  C08K5/20 ,  C08K5/52 ,  C08K5/521 ,  C08L97/00 ,  C08L101/00 ,  C08L101/14

Abstract: PURPOSE: To obtain a highly water-absorbing resin compsn. which is stable without being decomposed or degraded even in the presence of an aq. soln. or water contg. a free-radical-generating species, such as hydrogen peroxide, L-ascorbic acid, or its salt, and which is highly safe for the ecosystem. CONSTITUTION: This compsn. contains 100 pts.wt. highly water-absorbing resin and 0.0001-30 pts.wt. chelating agent compd. which has sites capable of forming chelation with copper ions and of which the copper salt has a solubility in a physiological salt soln. of 0.01wt.% or lower at 25 deg.C.

公开(公告)号：JPH0693008A

公开(公告)日：1994-04-05

申请号：JP24221992

申请日：1992-09-10

Applicant: KAO CORP

Inventor： MIYANAGA SEIICHI ,  INA YOSHIMITSU ,  MINAMI TAKAHIDE ,  AMIYA TSUYOSHI

IPC: A61L15/60 ,  C08F2/12 ,  C08F2/20 ,  C08F2/32

Abstract: PURPOSE:To obtain a method for producing amorphous polymer particles, capable of simply producing amorphous polymer particles having small apparent specific gravity and rapid water absorbing rate, excellent in air permeability and liquid-through property and excellent also in gel strength after absorbing water and useful as a water absorbable resin so as to enable mass-producing in excellent productivity. CONSTITUTION:This method for producing amorphous polymer particles is characterized by mixing a hydrophobic organic solvent inactive to polymerization with an aqueous solution of water soluble polymerizable monomer and polymerizing the water soluble polymerizable monomer in the presence of an anionic surfactant.

公开(公告)号：JPH05306360A

公开(公告)日：1993-11-19

申请号：JP28456590

申请日：1990-10-23

Applicant: KAO CORP

Inventor： ITO TAKASHI ,  AMIYA TSUYOSHI ,  TSUDA YUKA ,  YASUDA YUTAKA

IPC: B65D1/00 ,  B65D1/02 ,  C08L23/00 ,  C08L23/06 ,  C08L23/08 ,  C08L63/00 ,  C08L63/08 ,  C08L67/00 ,  C08L67/02 ,  B65D1/09

Abstract: PURPOSE:To obtain a packaging material excellent in mechanical characteristics and elevated gas barrier properties, and composed of a composition obtained by blending a specific resin composition with a specific amount of a specific glycidyl containing copolymer. CONSTITUTION:A resin composition made by blending (A) a resin composition composed of (i) 10-90wt.% polyester resin (preferably the resin having 0.6-1.5dl/g intrinsic viscosity at 25 deg.C in a mixed solvent consisting of phenol- tetrachloroethane (weight ratio 6:4) and (ii) 90-10% polyethylene (preferably a low density polyethylene having a melt viscosity given by 0.1-20g/10min. flow rate) and (B) 1-30 parts (preferably 2-20 parts) glycidyl containing copolymer having ethylene and a glycidyl ester of a beta-unsaturated carboxylic acid (preferably glycidyl methacrylate) as essential components is drawn to obtain the objective packaging material.

公开(公告)号：JPH05301277A

公开(公告)日：1993-11-16

申请号：JP10988592

申请日：1992-04-28

Applicant: KAO CORP

Inventor： NAKANO YUKIHIRO ,  HANADA HIROHIKO ,  AMIYA TSUYOSHI

IPC: B29C49/08 ,  B29C49/06 ,  B29K67/00 ,  B29L22/00 ,  B65D1/00 ,  B65D1/02 ,  C08L67/00 ,  C08L67/02 ,  B65D1/09

Abstract: PURPOSE:To obtain a massive frosty container by a method wherein the container, the haze and glossiness of the surface of which are specified, is formed out of composition, which is prepared by mixing polyester resin as main material and polycarbonate resin as sub-material with each other by the mixing ratio lying within the specified range. CONSTITUTION:Material, in which 70mol.% or more of repeating unit is made of ethylene terephthalate and the intrinsic viscosity of which is 0.65-1.5, is preferably employedas main material. Out of the composition consisting of the main material as mentioned above and polycarbonate resin as sub-material mixed with each other by the mixing ratio of main material/sub-material ranging from 98/2 to 60/40, a container having the haze of 1-50% and the glossiness of its surface of 40 or less is formed. The forming of the container is performed by forming preform, which is produced by injection molding the above-mentioned composition at the linear speed of 350mm/sec or less. The resultant preform is biaxially stretching blow molding at the elevated temperature of 155-175 deg.C. If the stretching is performed under the stretching temperature of 155 deg.C or lower, a white container is resulted. A container having uniform wall thickness can be hard to obtain, if the stretching is performed under the stretching temperature of 175 deg.C or higher.

公开(公告)号：JPH04178407A

公开(公告)日：1992-06-25

申请号：JP30779190

申请日：1990-11-13

Applicant: KAO CORP

Inventor： HASEBE YOSHIHIRO ,  AMIYA TSUYOSHI ,  YASUDA YUTAKA

IPC: C08F8/00 ,  C08F4/60 ,  C08F4/68 ,  C08F10/06

Abstract: PURPOSE:To obtain the subject polymer, having a narrow molecular weight distribution and useful as a polymer compatibilizing agent, etc., by polymerizing propylene, etc., in the presence of a polymerization catalyst composed of a specific V compound component and an organometallic compound and successively reacting divinylbenzene and a proton donor, etc., therewith. CONSTITUTION:Propylene is (co)polymerized in the presence of a polymerization catalyst composed of a catalyst component containing a vanadium compound expressed by formula I (R to R are H or l-8C hydrocarbon group and they will not simultaneously be H) and an organometallic compound of group I, II or III metal of the periodic table. The resultant polypropylene (co)polymer having active terminals is then reacted with an aromatic divinyl compound expressed by formula II (the relative positions of two substituent groups attached to the benzene ring may be any of the o-, p-and m-positions) and subsequently reacted with a proton donor or a halogen to afford the objective (co)polymer expressed by formula III (R is H or is H or halogen; n is 10-10000).