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1. 发明专利

JPH11302372A THERMOSETTING COMPOSITION, ITS CURING AND CURED PRODUCT OBTAINED BY THE SAME CURING 失效
公开(公告)号：JPH11302372A
公开(公告)日：1999-11-02
申请号：JP11527698
申请日：1998-04-24
申请人： UBE INDUSTRIES
发明人： OKAMOTO HIDEMASA , KUNIMURA MASARU , MIWA YOSHIYUKI , FUNAKOSHI TSUTOMU
IPC分类号： C08G65/18 , C08G59/68
摘要： PROBLEM TO BE SOLVED: To obtain a new rapidly curable thermosetting composition excellent in mechanical properties, electrical properties, adhesion, heat, moisture and chemical resistances and storage stability, etc., and usable in producing a new cured product useful as a substitute for an epoxy resin in the fields of applications to coating materials, coating agents, adhesives, electrical insulating materials, semiconductor encapsulants, etc., to provide a method for curing the composition and to produce the new cured product obtained by the method. SOLUTION: This thermosetting composition contains 5-95 pts.wt. of an oxetane compound having 1-4 oxetane rings in the molecule, 95-5 pts.wt. of an oxirane compound having >=1 oxirane rings in the molecule and a latent heat cationic polymerizing catalyst in an amount of 0.01-20 pts.wt. based on 100 pts.wt. of the sum total of both the compounds. The new cured product is obtained by heating the composition at 50-200 deg.C temperature for 1 min to 50 h and carrying out the cationic polymerization reaction and has a three- dimensional network structure.

2. 发明专利

JPH11236438A THERMOSETTING OXETANE COMPOSITION, ITS CURING, AND CURED PRODUCT THEREBY 失效
公开(公告)号：JPH11236438A
公开(公告)日：1999-08-31
申请号：JP3894198
申请日：1998-02-20
申请人： UBE INDUSTRIES
发明人： OKAMOTO HIDEMASA , MIWA YOSHIYUKI , KUNIMURA MASARU , FUNAKOSHI TSUTOMU
IPC分类号： C08L33/14 , C08G63/42 , C08G63/87 , C08J3/24
摘要： PROBLEM TO BE SOLVED: To obtain a thermosetting oxetane composition capable of obtaining a cured product having good mechanical properties, electrical properties, adhesiveness, thermal resistance, moisture resistance, chemical resistance or the like and useful as an alternative for an epoxy resin, by making the composition include a specified polymer and a carboxyl group-containing compound. SOLUTION: This composition is obtained by including (A) at least one polymer consisting of a repeating structural unit of the formula (R1 is H or methyl; R2 is H or a 1-6C alkyl), (B) a compound containing >=2 carboxyl groups in the molecule (e.g. adipic acid) and preferably (C) a quaternary onium salt (specifically, tetra n-butylphosphonium bromide or the like). It is preferable to obtain a cured product by heating a mixture of (A) and (B) in the presence of (C).

3. 发明专利

JPH06190502A PRODUCTION OF SAND CORE 失效
公开(公告)号：JPH06190502A
公开(公告)日：1994-07-12
申请号：JP34844192
申请日：1992-12-28
申请人： UBE INDUSTRIES
发明人： OKAMOTO HIDEMASA , YAO SHIGERU , KUNIMURA MASARU , KAWANISHI KENJI , IITANI HIDEYUKI
IPC分类号： B22C1/22 , B22C3/00 , B22C9/10
摘要： PURPOSE:To prevent the penetration of molten metal by molding a sand core prototype by using sand, a furan resin and a hardener for curing the resin by heating, then by immersing the sand core prototype into a liquid org. compd. having a specific value or above of the surface tension with a coating material consisting of a medium aq. dispersion, etc. CONSTITUTION:The sand core prototype is molded by using the sand, the furan resin and the hardener for curing the resin by heating. This sand core prototype is treated with the liquid org. compd. having at least >=2.0mN/m service tension with the slurry coating material consisting of the medium aq. dispersion consisting essentially of powdery refractories. The sand core prototype treated with the liquid org. compd. is dried and the dried sand core prototype is treated with an inorg. salt. The sand core prototype treated with the inorg. salt is dried. This process for production consists of for coating the surface of the dried sand core prototype with the coating material and drying the sand core obtd. by the coating. As a result, the penetration of the molten metal into the sand core does not arise and the casting surfaces of the product after discharging the sand are smooth.

4. 发明专利

JPH06190501A PRODUCTION OF SAND CORE 失效
公开(公告)号：JPH06190501A
公开(公告)日：1994-07-12
申请号：JP34844092
申请日：1992-12-28
申请人： UBE INDUSTRIES
发明人： OKAMOTO HIDEMASA , YAO SHIGERU , KUNIMURA MASARU , KAWANISHI KENJI , IITANI HIDEYUKI
IPC分类号： B22C1/22 , B22C3/00 , B22C9/10
摘要： PURPOSE:To provide the sand core which sufficiently withstands a high-casting pressure at the time of casting by molding a sand core prototype by using sand, a furan resin and a hardener for curing the resin by heating, then by subjecting the sand core prototype to a treatment with a liquid org. compd. having a specific value or above of the surface tension with a coating material consisting of a medium dispersion, etc. CONSTITUTION:The sand core prototype is molded by using the sand, the furan resin and the hardener for curing the resin by heating. This sand core prototype is treated with the liquid org. compd. having at least >=2.0mN/m surface tension with the slurry coating material consisting of the medium aq. dispersion consisting essentially of powdery refractories. This process for production consists of stages for drying the treated sand core prototype, treating the dried sand core prototype with an alkali, drying the treated sand core prototype, coating the surface of the dried sand core prototype with the coating material and drying the sand core obtd. by the coating. As a result, the penetration of molten metal into the sand core does not arise and the sand does not remain at the casting surfaces. The smooth surfaces are thus obtd.

5. 发明专利

JPH06142832A PRODUCTION OF SAND CORE 失效
公开(公告)号：JPH06142832A
公开(公告)日：1994-05-24
申请号：JP30391092
申请日：1992-11-13
申请人： UBE INDUSTRIES
发明人： OKAMOTO HIDEMASA , YAO SHIGERU , KUNIMURA MASARU , KAWANISHI KENJI , IITANI HIDEYUKI
IPC分类号： B22C1/22 , B22C3/00 , B22C9/10 , B22D17/22
摘要： PURPOSE:To produce the sand core prototype with which the working environment is good and which is used for high-pressure casting by forming a core of core sand mixed with a furan resin hardener and coating the core with a coating material consisting essentially of powdery refractories. CONSTITUTION:The furan resin, the hardener for thermal curing of the resin and a liquid org. compd. are first compd. with the core sand constituting sand core aggregate at 0.05 to 0.5 pts.wt. per 100 pts. sand. The sand core prototype having a prescribed shape is molded by using such sand and is heated to prescribed strength. The sand core prototype is then coated. The coating material consists essentially of fine powder silica and fine powder alumina which are added with a small amt. of colloidal silica and is made into a slurry of about 50 to 90wt.% solid content. The sand core prototype compounded with the liquid org. compd. having at least >=2.0mN/m interfacial tension with this coating material is immersed for several seconds in the coating material and then dried by heating. The sand core which has the sufficiently large thickness of the coating and withstands high-pressure casting is obtd.

6. 发明专利

JPH0622910B2 失效
公开(公告)号：JPH0622910B2
公开(公告)日：1994-03-30
申请号：JP7784188
申请日：1988-03-30
申请人： UBE INDUSTRIES
发明人： OKAMOTO HIDEMASA , KUNIMURA MASARU
IPC分类号： B29C65/52 , B29C43/18 , B29C65/48 , B29K105/06 , B29L9/00 , B32B15/08

7. 发明专利

JPH0671382A PRODUCTION OF SAND CORE 失效
公开(公告)号：JPH0671382A
公开(公告)日：1994-03-15
申请号：JP27069392
申请日：1992-08-28
申请人： UBE INDUSTRIES
发明人： OKAMOTO HIDEMASA , KUNIMURA MASARU , IITANI HIDEYUKI , KOYA MORIE
IPC分类号： B22C3/00 , B22C1/22 , B22C9/10 , B22C13/08 , B22D17/22
摘要： PURPOSE:To produce the sand core having excellent coatability by subjecting the surface of a sand core prototype formed by solidifying resin coated sand compounded with an org. acid salt to uniform coating. CONSTITUTION:The sand core prototype is produced by using the resin coated sand(RCS) coated with a coal acid type synthetic resin and the org. acid salt. The surface of the molded sand core prototype is coated with a slurry-like coating material consisting of a neutral water dispersion essentially consisting of powdery refractories. The sand core obtd. by such coating is dried. The coating material forms a coating layer of a uniform and suitable thickness without infiltrating the inside of the sand core prototype or being repulsed on the surface at this time. The sand core which sufficiently withstands a high casting pressure is produced by using the sand core prototype solidified by using a shell molding method.

8. 发明专利

JPH05285590A 失效
公开(公告)号：JPH05285590A
公开(公告)日：1993-11-02
申请号：JP13746092
申请日：1992-04-14
申请人： UBE INDUSTRIES
发明人： OKAMOTO HIDEMASA , KUNIMURA MASARU , IITANI HIDEYUKI , KOYA MORIE
IPC分类号： B22C13/08 , B22C1/22 , B22C3/00 , B22C9/10
摘要： PURPOSE:To provide the sand core which withstands a high casting pressure at the time of casting by coating the surface of a sand core prototype with a slurry-like coating material consisting of a neutral water dispersion essentially consisting of powdery refractories. CONSTITUTION:The sand core prototype contg. an inorg. salt is molded by compounding the inorg. salt or into resin coated sand coated with a synthetic resin of a carbolic acid and curing the mixture by heating. The surface of the sand core prototype is coated with the slurry-like coating material consisting of the neutral water dispersion essentially consisting of the powdery refractories. The coating material is instantaneously flocculated by the inorg. salt existing near the surface of the sand core prototype, by which the surface is thickly coated without penetrating of the coating material deep into the inside. This coating is dried to form the coating layer having a uniform thickness. The failure of the sand core by a molten metal and the infiltration of the molten metal into the sand core are obviated even under a high pressure such as in high-pressure die casting.

9. 发明专利

JPH04142383A ADHESIVE COMPOSITION 失效
公开(公告)号：JPH04142383A
公开(公告)日：1992-05-15
申请号：JP26570090
申请日：1990-10-03
申请人： UBE INDUSTRIES , TOYOTA MOTOR CORP
发明人： SHIBATA SEISHI , OKAMOTO HIDEMASA , KUNIMURA MASARU , SONOYAMA KENJI
IPC分类号： C08L63/00 , C08G59/00 , C08G59/56 , C09J163/00
摘要： PURPOSE:To obtain the title composition excellent in the balance between the bonding strength and the flexibility and suitable particularly for filling a hemmed part by mixing a liquid epoxy resin, a specified modified polyolefin resin powder, a latent curing agent, and a latent curing agent comprising an amine adduct. CONSTITUTION:100 pts.wt. liquid epoxy resin is mixed with 5-50 pts.wt. modified polyolefin resin powder having a mean particle diameter of about 0.9 to 1.5 times the preset thickness of an adhesive and a melting point of 70-190 deg.C, 1-50 pts.wt. latent curing agent, and 0.5-20 pts.wt. latent curing agent comprising an amine adduct to give the title composition. It can be used in various applications as an adhesive excellent in the balance between the bonding strength and the flexibility. It is excellent particularly as an adhesive for the hemming of an automobile body. It can be utilized also as a sealant, a coating material, etc.

10. 发明专利

JPH032380B2 失效
公开(公告)号：JPH032380B2
公开(公告)日：1991-01-14
申请号：JP11523083
申请日：1983-06-28
申请人： UBE INDUSTRIES
发明人： SUZUKI YOSHITAKE , KUNIMURA MASARU
IPC分类号： C08J9/04 , C08J9/14

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