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1. 发明专利

JPH0995673A CHEMICAL LIQUOR FOR SETTING NATURAL GROUND 失效
公开(公告)号：JPH0995673A
公开(公告)日：1997-04-08
申请号：JP27374495
申请日：1995-09-28
申请人： TOKAI RUBBER IND LTD , SHINKU KAGAKU KOGYO KK
发明人： UDA SHINYA , ISHIHARA KO , NATSUBORI ISAO , WAKIZAKA OSAMU , MITSUTOME YASUYUKI
IPC分类号： C04B28/26 , C09K17/30 , C09K17/46 , C09K17/48
摘要： PROBLEM TO BE SOLVED: To obtain the subject chemical liquor high in expansion ratio and setting strength, easy to control its curing rate, and stably injectable irrespective of its curing time, by combining a liquor predominant in sodium silicate with another liquor predominant in a specific polyisocyanate composition. SOLUTION: This chemical liquor is composed of (A) a liquor predominant in aqueous sodium silicate solution and (B) another liquor predominant in a composition comprising (B) an emulsified dispersion type MDI (e.g. 23-31wt.% in NCO content) as a reaction product of a compound (MDI) of the formula ((n) >=0) and a polyalkylene glycol (e.g. polyethylene glycol 500-3000 in molecular weight) and (B2 ) a mixture of the MDIs of the formula. In this case, the component B2 contains 45-65wt.% of binuclear form ((n)=0) (esp. 5-35wt.% of 2,4'- diisocyanatodiphenyl-methane) and 10-45wt.% of polynuclear forms ((n)>=3). It is preferable that the component A be incorporated with a polyol

2. 发明专利

JPH0971778A CHEMICAL FLUID FOR SOIL SOLIDIFICATION 失效
公开(公告)号：JPH0971778A
公开(公告)日：1997-03-18
申请号：JP25193695
申请日：1995-09-05
申请人： TOKAI RUBBER IND LTD , SHINKU KAGAKU KOGYO KK
发明人： UDA SHINYA , ISHIHARA KO , NATSUBORI ISAO , WAKIZAKA OSAMU , MITSUTOME YASUYUKI
IPC分类号： C09K17/30 , C09K17/46 , C09K17/48 , C09K103/00
摘要： PROBLEM TO BE SOLVED: To obtain a chemical fluid for soil solidification which has a high solidification strength, highly penetrates into soils, and has a high expansion ratio and excellent profitability. SOLUTION: This chemical fluid is of a two-pack type consisting of a fluid A consisting mainly of an aqueous solution of sodium silicate and a fluid B consisting mainly of organic isocyanates represented by formula I (wherein (n) is 0 or a larger integer). 45-65wt.% of all isocyanates are accounted for by bicyclic isocyanates wherein n=0, and the isocyanates include 2,4'- diisocyanatodiphenylmethane, represented by formula II, which accounts for 5-35wt.%. The organic isocyanates represented by formula I wherein n>=3 are 10-45wt.% of all isocyanates.

3. 发明专利

JPH08157824A AGENT FOR CONSOLIDATING NATURAL GROUND 失效
公开(公告)号：JPH08157824A
公开(公告)日：1996-06-18
申请号：JP27213595
申请日：1995-09-27
申请人： TOKAI RUBBER IND LTD , SHINKU KAGAKU KOGYO KK
发明人： ISHIHARA KO , NATSUBORI ISAO , UDA SHINYA , MITSUTOME YASUYUKI
IPC分类号： C09K17/30 , C04B28/26 , C08G18/76 , C09J175/00 , C09K17/46 , C09K17/48 , C09K103/00
摘要： PURPOSE: To obtain the subject agent, improved in expansion ratio, sufficiently permeating through voids, expanding and carrying out the consolidation treatment of a bedrock, etc., by combining a liquid A consisting essentially of an aqueous solution of sodium silicate with a liquid B consisting essentially of a specific organic isocyanate and excellent in flame retardance. CONSTITUTION: This agent for consolidating the natural ground is a two-part grouting agent composition obtained by combining a liquid A consisting essentially of an aqueous solution of sodium silicate with a liquid B consisting essentially of an organic isocyanate of the formula [(n) is 0 or >=1]. The content of the organic isocyanate in which (n) in the isocyanate is 0 is preferably 43-70wt.% and that of the organic isocyanate in which (n) is >=3 is 8-45wt.%. The liquid A preferably contains

4. 发明专利

JPH0741765A CHEMICAL FOR CONDITIONING GROUND 失效
公开(公告)号：JPH0741765A
公开(公告)日：1995-02-10
申请号：JP20356193
申请日：1993-07-26
申请人： TOKAI RUBBER IND LTD , SHINKU KAGAKU KOGYO KK
发明人： ISHIHARA KO , NATSUBORI ISAO , UDA SHINYA , MITSUTOME YASUYUKI
IPC分类号： C09K17/48 , C04B28/26 , C09K103/00 , C09K19/46
摘要： PURPOSE:To strengthen the subterranean ground of a high depth by mixing liquid A based on an aqueous sodium silicate solution with liquid B containing an organic polyisocyanate or an NCO-containing urethane polymer derived therefrom. CONSTITUTION:Liquid A containing sodium silicate as the base and 0.05-3.0wt.% cure accelerator (e.g. tetramethylhexanediamine and having a water content of 55-60wt.% is mixed with liquid B containing an organic polyisocyanate of the formula (wherein n is 0 or an integer of 1 or greater) (e.g. crude diphenylmethane isocyanate, C-MDI) or containing a urethane prepolymer prepared by reacting a compound of formula I with a hydroxy compound (e.g. a reaction product of C-MDI with dipropylene glycol in a specified ratio) in a molar ratio of the water content (Xmol) of solution A to the NCO content (Ymol) of liquid B of 1:0.16 to 1:0.30.

5. 发明专利

JPH05249818A 失效
公开(公告)号：JPH05249818A
公开(公告)日：1993-09-28
申请号：JP8348892
申请日：1992-03-04
申请人： TOKAI RUBBER IND LTD
发明人： ISHIHARA KO , KANBARA NORIO , IWASHIRO JIROU , KACHI AKIHIKO
IPC分类号： G03G15/08
摘要： PURPOSE:To obtain the roll with which the uniform and sufficient density of copied images is obtainable and which is excellent in fogging resistance by having a stage for forming a nonconductive layer by using a nonconductive coating material on the outer peripheral surface of a shaft body and a stage for forming a conductive layer by using a conductive coating material on the outer peripheral surface of the nonconductive layer. CONSTITUTION:The nonconductive coating material is produced by dissolving a binder essentially consisting of acryl, melamine and phenolic resin into a solvent, such as methanol or xylene. The nonconductive coating material is applied on the surface of the metallic sleeve (shaft body) as a pair by dipping, etc., by which the nonconductive layer 15 is formed thereon. On the other hand, the conductive coating material is prepd. by using the same materials as the materials of the nonconductive coating material and dissolving this mixture into a solvent. The conductive coating material is applied by dipping, etc., on the surface of the nonconductive layer 15 and is dried, by which the conductive layer 14 is formed thereon. The easy flow of charges is assured and the accumulation of the residual charges of toners which is the cause for the generation of fogging is prevented if the nonconductive layer 15 is formed by using the nonconductive coating material and then the conductive layer 14 is formed on the surface of the nonconductive layer 15 in such a manner. The control of the splashing of toners from the roll is, therefore, facilitated.

6. 发明专利

JPH05232795A 失效
公开(公告)号：JPH05232795A
公开(公告)日：1993-09-10
申请号：JP7634892
申请日：1992-02-25
申请人： TOKAI RUBBER IND LTD
发明人： ISHIHARA KO , KANBARA NORIO , YOSHIKAWA HITOSHI , KACHI AKIHIKO
IPC分类号： G03G15/08 , C09D5/24
摘要： PURPOSE:To provide an electroconductive coating compound which has a high toner charging property and can fabricate an electroconductive layer on a conductive roll permitting stable generation of sufficient copy image density. CONSTITUTION:An electroconductive coating compound is prepared by dispersing electroconductive powder and electroconductive resin powder in a binder resin and equipped with the characteristics (A)-(C); (A) the electric resistance Rvf of electroconductive resin powder is below 10 OMEGA.cm, (B) the electric resistance Rvr of the compound of binder resin and electroconductive powder is below 10 OMEGANUcm, and (C) the relation of two values Rvf. Rvr meets the condition as Rvf>Rvr.

7. 发明专利

JPH0535085A CONDUCTIVE COMPOSITION 失效
公开(公告)号：JPH0535085A
公开(公告)日：1993-02-12
申请号：JP21625391
申请日：1991-07-31
申请人： TOKAI RUBBER IND LTD
发明人： ISHIHARA KO , KANBARA NORIO , YOSHIKAWA HITOSHI
IPC分类号： G03G15/02 , G03G15/08
摘要： PURPOSE:To allow the formation of a conductive layer with which a sufficient electrostatic charge quantity is obtainable and which has uniform electrostatic chargeability by combining an org. high-polymer binder resin, porous packing material, conductive powder, and a charge control agent. CONSTITUTION:This conductive compsn. is obtd. by combining the org. high- polymer binder resin, the porous packing material, the conductive powder, and the charge control agent. The org. high-polymer binder resin is preferably a polyamide resin and the porous packing material is exemplified by water absorptive and oil absorptive resins, etc., such as cellulose powder, wood meal, sepiolite, and silicon powder (oil absorptive). The content ratio of such porous packing material is preferably set in a range of 5 to 50 pts.wt. per 100 pts.wt. org. high-polymer binder resin. The conductive powder is exemplified by metal oxide powder, etc., such as carbon black and the content ratio thereof is preferably in a 5 to 30vol.% range in the conductive compsn. The charge control agent is selected from various kinds of polymers, etc., according to the electrostatic charging of toners to minus and plus.

8. 发明专利

JPH056094A CONDUCTIVE ROLL 失效
公开(公告)号：JPH056094A
公开(公告)日：1993-01-14
申请号：JP18299491
申请日：1991-06-26
申请人： TOKAI RUBBER IND LTD
发明人： ISHIHARA KO , KANBARA NORIO , MAEDA AKIHIRO
IPC分类号： G03G15/09
摘要： PURPOSE:To obtain the conductive roll having uniform electric resistance by constituting a conductive layer by dispersing at least either of a titanium black and magnetic iron oxide into a matrix component. CONSTITUTION:A metallic sleeve 12 formed coaxially with the conductive layer 15 in the state of having a gap on the outer periphery of a magnet shaft 42 and further, end caps 41 are fitted to both right and left ends thereof, by which the conductive roll is produced. Either or both of the titanium black and magnetic iron oxide are used as the conductive material to be compounded with the conductive material forming the conductive layer 15 in such a case. This material is mixed and kneaded with the matrix component to prepare the conductive material. The conductive material is uniformly dispersed into the matrix component in the conductive layer 15 if this conductive layer is formed by using such conductive material.

9. 发明专利

JPH04303865A ELECTRICALLY CONDUCTIVE ROLL 失效
公开(公告)号：JPH04303865A
公开(公告)日：1992-10-27
申请号：JP9306291
申请日：1991-03-30
申请人： TOKAI RUBBER IND LTD
发明人： ISHIHARA KO , KANBARA NORIO , YOSHIKAWA HITOSHI
IPC分类号： G03G15/08
摘要： PURPOSE:To obtain a copied image having sufficiently high density by incorporating an electrically conductive roll into an electrophotographic copying machine. CONSTITUTION:An electrically conductive layer 15 is formed around a core metal 16 to obtain an electrically conductive roll. The layer 15 is formed with a conductive coating material prepd. by dispersing at least one kind of powdery filler selected among silicone powder, polyamide resin powder and methacrylate resin powder each having

10. 发明专利

JPH04283779A SEMICONDUCTIVE ROLL 失效
公开(公告)号：JPH04283779A
公开(公告)日：1992-10-08
申请号：JP7386991
申请日：1991-03-12
申请人： TOKAI RUBBER IND LTD
发明人： HASHIMOTO KAZUNOBU , KATO HIROYASU , ISHIHARA KO , HAYASHI SABURO , INUBUSHI MASAAKI , YAMAMOTO TAKASHI
IPC分类号： G03G15/09
摘要： PURPOSE:To provide the semiconductive roll which does not generate unequal electrostatic charge on a body to be electrostatically charged, such as photosensitive body and the dielectric breakdown in the roll itself. CONSTITUTION:The surface resistances (RsA, RsB, RsC successively from the outermost layer) of the respective layers of the semiconductive roll 1 having the three-layered structure satisfying equation (1) satisfy equations (2) to (4). Rs/Rv.delta>=10...1 [in the equation (1), Rs is the surface resistance (OMEGA/square) of the semiconductive roll, Rv is the resistance (volumetric resistance: OMEGAcm) in the thickness direction of the semiconductive layer of the semiconductive roll, delta is the thickness (cm) of the semiconductive layer.] RsA/RsB>=10...(2), RsB/RsC =1X10 ...(4) [the unit of the surface resistances RsA, RsB, RsC in the formulas (2), (3), (4) are OMEGA/square].

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