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1. 发明专利

JPH09290430A MANUFACTURE OF POLYOLEFINIC RESIN OPEN-CELL FOAM 失效
公开(公告)号：JPH09290430A
公开(公告)日：1997-11-11
申请号：JP10714796
申请日：1996-04-26
申请人： HITACHI CHEMICAL CO LTD
发明人： YAMADA MITSUO , MIYATA KAZUMASA
IPC分类号： B29C44/00 , B29K23/00 , B29K105/04 , B29L7/00
摘要： PROBLEM TO BE SOLVED: To economically produce a polyolefinic resin open-cell foam generating no partial blister and good in appearance without arranging a post-processing apparatus or complicating processing. SOLUTION: In this molding process, a foamable sheet is molded from a polyolefinic resin compsn. containing a crosslinking agent, a foaming agent and a foam film strength adjusting agent. In a feed process, the foamable sheet molded in the molding process is fed by a feed material excellent in the releasability with the foamable sheet and having vent holes with a predetermined diameter at a predetermined interval. In a foam forming process, the foamable sheet fed along with the feed material is crosslinked and foamed under heating to form a foam which is, in turn, cooled to be released from the feed material.

2. 发明专利

JPH09143509A PRODUCTION OF FOAM 失效
公开(公告)号：JPH09143509A
公开(公告)日：1997-06-03
申请号：JP29833695
申请日：1995-11-16
申请人： HITACHI CHEMICAL CO LTD
发明人： YAMADA MITSUO , AIZAWA TERUKI , UCHIDA TATSUYA
IPC分类号： B22F5/00 , B22F3/11
摘要： PROBLEM TO BE SOLVED: To provide a producing method of a foam by which the foam of a metal or a metallic compound having uniform foam cells can be produced with a very simple process without necessitating any complicated process such as a plating process and a metallic powder attaching process. SOLUTION: A resin composition consisting of a heat resistant resin of granular or fibrous shape containing dihydrobenzooxazine rings, a granular foaming agent and a metal or a metallic compound is processed to a molded body and, then, the molded body is heated to cause ring-opening polymerization of the dihydrobenzooxazine rings of the heat resistant resin and decomposition of the foaming agent to obtain a molded foam. The molded foam is heated in the atmosphere to fire the resin part and a complex foam is obtained. The complex foam is sintered in a reductive atmosphere to obtain a foam of the metal or the metallic compound. The resin composition in which the size of the heat resistant resin containing the dihydrobenzooxazine rings is half to ten times of the foaming agent is used.

3. 发明专利

JPH09132661A PRODUCTION OF FOAM FOR CMP PAD 失效
公开(公告)号：JPH09132661A
公开(公告)日：1997-05-20
申请号：JP28944295
申请日：1995-11-08
申请人： HITACHI CHEMICAL CO LTD
发明人： YAMADA MITSUO , OIKAWA SHUNJI , MIKAMI YOSHIKATSU
IPC分类号： C08J9/06
摘要： PROBLEM TO BE SOLVED: To obtain a foam used for a CMP pad and having excellent water resistance and consequent durability by forming a mixture comprising a crosslinking agent, a heat-decomposable blowing agent and a polyolefin resin containing an abrasive into a sheet and crosslinking and foaming this sheet. SOLUTION: A crosslinking agent, a crosslinking aid (A), a heatdecomposable blowing agent (B), an abrasive (C) and a polyolefin resin (D) are melt-kneaded at the decomposition temperature of component B or below, and the resultant mixture is formed into a sheet, This sheet is crosslinked and foamed to form a foam for a CMP(chemical-mechanical polishing) pad. Examples of component D include polypropylene and polyethylene, An example of component A is tbutylcumyl peroxide. An example of component B is an organic type such as azodicarbonamide or an inorganic type such as sodium carbonate/citric acid mixture. The composition of a combination of component A with component B is desirably such that cell diameters of several tensμm or below can be realized. Component C used is desirably a finely divided silicon oxide abrasive, This foam has excellent water resistance as compared with a conventional urethane foam, so that it can give a CMP pad having durability.

4. 发明专利

JPH09115703A CONDUCTIVE COMPOSITE MATERIAL COMPOSITION AND CONDUCTIVE COMPOSITE OBTAINED BY MOLDING IT 失效
公开(公告)号：JPH09115703A
公开(公告)日：1997-05-02
申请号：JP27516495
申请日：1995-10-24
申请人： HITACHI CHEMICAL CO LTD
发明人： MIYATA KAZUMASA , IMAIZUMI JUNICHI , SHIOGAI SUSUMU , KATO MATSUO , YAMADA MITSUO , UEHARA TOSHISHIGE
IPC分类号： C08K3/04 , C08K3/02 , C08K3/08 , C08L33/04 , C08L33/18 , C08L33/20 , C08L101/00 , H01B1/20 , H01C7/02
摘要： PROBLEM TO BE SOLVED: To obtain a conductive composite material composition which shows a large resistance change at a room temperature or lower, with the change being able to be reproduced excellently, by mixing a specific amount of conductive material in resin. SOLUTION: A conductive composite material is prepared by mixing of a conductive material in a side-linked crystalline polymer at a mixing ratio of 20-100 pts.wt. against 100 pts.wt. of the polymer. Such a (meta-)acrylic copolymer as the poly(α-olefin), poly(alkylacrylate), etc., is used as the polymer. In addition, a graft material made of such a polar monomer as the carbon black, etc., metal-plated carbon black, graphite, etc., is used as the conductive material. In addition, such a metal as the nickel, cobalt, silver, copper, etc., or an alloy of these metals is used. Therefore, a conductive composite whose resistance shows a steep and large change having a high reproducibility at a low temperature of

5. 发明专利

JPH09115702A MANUFACTURE OF CONDUCTIVE COMPOSITE MATERIAL ELEMENT 失效
公开(公告)号：JPH09115702A
公开(公告)日：1997-05-02
申请号：JP27516295
申请日：1995-10-24
申请人： HITACHI CHEMICAL CO LTD
发明人： YAMADA MITSUO , MIYATA KAZUMASA
IPC分类号： H01C7/02
摘要： PROBLEM TO BE SOLVED: To obtain a highly reliable conductive composite material element by subjecting an organic polymer to heat treatment in which the polymer is repeatedly heated to a temperature which falls between the glass-transition temperature of the polymer and a temperature near the melting point of the polymer and cooled a plurality of times. SOLUTION: An organic polymer is composed of single resin of polyolefin, nylon, etc., or a mixture of these resin and a conductive material is composed of carbon black or metallic alloy or a mixture of them. Firstly, a conductive composite material element is prepared by mixing the organic polymer and conductive material with each other and molding the mixture. Then the element is subject to heat treatment in which the element is repeatedly heated to a temperature which falls between the glass-transition temperature of the polymer and a temperature near the melting point of the polymer. Therefore, the continuity resistance of the element does not change much with time and the relation between the continuity resistance and temperature of the element can be reproduced excellently.

6. 发明专利

JPH08311229A POLYOLEFIN RESIN FOAM 失效
公开(公告)号：JPH08311229A
公开(公告)日：1996-11-26
申请号：JP11703495
申请日：1995-05-16
申请人： HITACHI CHEMICAL CO LTD
发明人： AWANO YASUHIKO , YAMADA MITSUO , MIYATA KAZUMASA
IPC分类号： C08J9/06 , C08L23/16
摘要： PURPOSE: To produce a polyolefin resin foam excellent in mechanical strengths, heat resistance and appearance. CONSTITUTION: This polyolefin resin foam is obtained by cross-linking and foaming a polyolefin resin composition containing a cross-linking agent and a heat-decomposable blowing agent, wherein the polyolefin resin is made of a mixture comprising an ethylene/propylene random copolymer, a reactor polyolefin thermoplastic elastomer (P.E.R) comprising 5-45wt.% polypropylene component and 95-55wt.% ethylene/propylene copolymer component and a polyethylene.

7. 发明专利

JPH08142155A POLYOLEFINIC RESIN CROSSLINKED FOAM AND PRODUCTION THEREOF 失效
公开(公告)号：JPH08142155A
公开(公告)日：1996-06-04
申请号：JP28158694
申请日：1994-11-16
申请人： HITACHI CHEMICAL CO LTD
发明人： AWANO YASUHIKO , MIYATA KAZUMASA , YAMADA MITSUO
IPC分类号： C08J9/06 , B29C47/10 , B29K23/00 , B29K105/04 , B29K105/24 , C08L23/04 , C08L23/16
摘要： PURPOSE: To obtain polyolefinic resin crosslinked foam excellent in molding processability and uniform in appearance. CONSTITUTION: In a method for producing polyolefinic resin crosslinked foam by crosslinking and foaming a polyolefinc resin compsn. containing at least a crosslinking agent and a crosslinking aid, the crosslinking agent and the crosslinking aid are separately supplied to an extrusion molding machine to subject the polyolefinic resin compsn. to extrusion molding and the extrudate is heated and foamed to produce the polyolefinic resin crosslinked foam.

8. 发明专利

JPH08109277A CROSS-LINKED POLYOLEFIN RESIN FOAM 失效
公开(公告)号：JPH08109277A
公开(公告)日：1996-04-30
申请号：JP24406894
申请日：1994-10-07
申请人： HITACHI CHEMICAL CO LTD
发明人： MIYATA KAZUMASA , YAMADA MITSUO , AWANO YASUHIKO , SHIMOYAMA KOJI
IPC分类号： C08J9/06 , C08L23/04 , C08L101/00
摘要： PURPOSE: To obtain a cross-linked polyolefin resin foam which is excellent in heat resistance, high-temp. elongation, and modability and is homogeneous in appearance. CONSTITUTION: In producing a polyolefin resin foam by cross-linking and foaming a polyolefin resin compsn. at least contg. a cross-linker. a cross-linking aid, and a thermally decomposable foaming agent, the polyolefin resin used is a mixture comprising 60-10wt.% polyethylene resin and 40-90wt.% reactor- olefin thermoplastic elastomer (P.E.R) which is obtd. by the direct polymn. of 5-35wt.% polypropylene component and 95-65wt.% ethylene-propylene rubber component and has a melt flow rate of 0.5-20g/10min, a density of 0.87-0.90g/cm , and an m.p. of 140-155 deg.C. The foam is produced by mixing and kneading all the materials, molding the mixture with a molding machine into a sheet, and thermally foaming the sheet.

9. 发明专利

JPH07188518A FUNCTIONAL RESIN COMPOSITION 失效
公开(公告)号：JPH07188518A
公开(公告)日：1995-07-25
申请号：JP33319993
申请日：1993-12-27
申请人： HITACHI CHEMICAL CO LTD
发明人： KUWANO ATSUSHI , WATANABE ITSUO , TOMIYAMA TAKEO , YAMADA MITSUO
IPC分类号： C08K5/56 , C08L65/00
摘要： PURPOSE:To obtain a functional resin composition comprising a naphthalocyanine compound and a polymer containing a specific constituent unit, having excellent solubility in organic solvent and film-forming property, remarkably varying the optical characteristics with temperature and useful for a temperature sensor, etc. CONSTITUTION:This functional resin composition contains (A) a polymer containing a constituent unit of formula I [R1 and R2 each is H, an (alkoxy) alkyl, an alkoxy, an alkylthio or O(CH2CH2O)R5 (R5 is an alkyl); n is a positive integer; R3 is H, an aromatic group or a hetero-ring; X is S, O, Se, Te or NR4 (R4 is H or an alkyl)] and (B) a naphthalocyanine compound containing a center metal and having substituent on naphthalene ring, preferably a compound of formula II [Q is an alkylthio, an alkoxy(alkyl), an alkoxycarbonyl, an alkyl(amino), etc.; j, k, l and m each is 0 or d1-4; M is Si, Ge or Sn; X is a trialkylsiloxy, etc.].

10. 发明专利

JPH07186535A OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPH07186535A
公开(公告)日：1995-07-25
申请号：JP33320093
申请日：1993-12-27
申请人： HITACHI CHEMICAL CO LTD
发明人： KUWANO ATSUSHI , WATANABE ITSUO , TOMIYAMA TAKEO , YAMADA MITSUO
IPC分类号： B41M5/26 , G11B7/24 , G11B7/244
摘要： PURPOSE:To obtain a recording layer capable of detecting a recording part and a non-recording part by the irradiation with laser beam without changing the thickness of the recording layer by adding a polymer containing a specific structural unit and a naphthalocyanine compd. having a substituent on the center metal and naphthalene ring thereof. CONSTITUTION:A recording layer is composed of a compsn. containing a polymer containing a structural unit represented by formula I and a naphthalocyanine compd. having a substituent on its center metal and naphthalene ring. In the formula I, R1 and R2 are a hydrogen atom, an alkyl group, an alkoxy group, an alkoxyalkyl group, an alkylthio group or an -O(CH2CH2O) R5 group (wherein R5 is an alkyl group), n is a positive integer, R3 is hydrogen atom, an aromatic group, an aliphatic group or a group containing a heterocyclic ring and X is S, D, Se, Te or NR4 (wherein R4 is a hydrogen atom or an alkyl group).

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