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1. 发明专利

JP2002068797A AIR ENTRAINING AGENT 失效
公开(公告)号：JP2002068797A
公开(公告)日：2002-03-08
申请号：JP2000257311
申请日：2000-08-28
申请人： JUJO PAPER CO LTD , MIYOSHI YUSHI KK
发明人： UEDA TAKAAKI , SUMIYAMA HIROYUKI , YOSHIKAWA YOSHIHIRO , MORIYA MASAFUMI , ARAI HIDEHIKO , KADOFUJI ATSUSHI
IPC分类号： C04B24/08 , C04B24/32 , C04B28/02 , C04B103/30 , C08K5/098 , C08L71/02
摘要： PROBLEM TO BE SOLVED: To provide an air entraining agent, effective with a small amount added, which can flow fine air into a mortar or concrete with less air loss. SOLUTION: This air entraining agent is comprised of (A) a polyalcohol ester of a hydroxy fatty acid added with an alkylene oxide and (B) 8-24C fatty acid salt. The mixing ratio of (A)/(B) by weight ranges 1/99 to 99/1.

2. 发明专利

JPH0859322A CEMENT ADDITIVE 失效
公开(公告)号：JPH0859322A
公开(公告)日：1996-03-05
申请号：JP22428794
申请日：1994-08-25
申请人： JUJO PAPER CO LTD
发明人： HAMADA SHINJI , SUMIYAMA HIROYUKI , KANEKO IKU , ICHIHARA TOSHIAKI , TAKAHASHI HITOSHI
IPC分类号： C04B24/00 , C04B24/26 , C04B28/04 , C08K5/07 , C08L33/02 , C08L33/04
摘要： PURPOSE: To obtain a cement additive capable of improving the strength of concrete without deteriorating workability by adding dialdehydes to a polycarboxylate. CONSTITUTION: This cement additive is obtained by adding 0.1-10% dialdehydes to the polycarboxylate. A copolymer composed of a methacrylic acid-methoxy polyoxyethylene glycol methacrylic ester as the structural unit or a polycarboxylic acid based high performance AE water-reducing agent on the market can be used as the polycarboxylate to be used. As the dialdehydes, glyoxal and glutaraldehyde are particularly preferable. The quantity of the aldehydes to be added is 0.1-10wt.%, preferably 0.5-5wt.%. If =10%, the effect on the improvement of strength is uneconomically leveled off.

3. 发明专利

JPH10279337A DISPERSANT FOR CONCRETE 失效
公开(公告)号：JPH10279337A
公开(公告)日：1998-10-20
申请号：JP7926797
申请日：1997-03-31
申请人： JUJO PAPER CO LTD
发明人： INABA YOSHIKI , SUMIYAMA HIROYUKI , KANEKO IKU , TAKAHASHI HITOSHI
IPC分类号： C04B24/22 , C04B22/08 , C04B40/00 , C04B103/30
摘要： PROBLEM TO BE SOLVED: To prevent the precipitation of a dispersant for concrete and to improve antifreezng property, dispersing performance and strength at low temp. by using calcium salt of a condensation product consisting of 4- aminobenzenesulfonic acid, a bisphenol compd. and formaldehyde and a nitrite or nitrate as essential components. SOLUTION: Calcim salt (A) of a condensation product obtd. by condensing 100 pts.wt. 4-aminobenzenesulfonic acid, 20-150 pts.wt. bisphenol compd. and 20-65 pts.wt. formaldehyde by heating under aq. conditions is blended with a nitrite or nitrate (B) so that the weight ratio of A:B is regulated to 2:98 to 25:75 (expressed in terms of solids) to obtain the objective dispersing for concrete. This dispersant is added to a cement compsn. by 1.4-4.0 wt.%, preferably 2.0-3.0 wt.% (expressed in terms of solid) of the amt. of the cement.

4. 发明专利

JPH07242457A CEMENT COMPOSITION 失效
公开(公告)号：JPH07242457A
公开(公告)日：1995-09-19
申请号：JP5479794
申请日：1994-03-02
申请人： JUJO PAPER CO LTD
发明人： OSADA KOJI , HAMADA SHINJI , SUMIYAMA HIROYUKI , MORIBE NORIHARU
IPC分类号： C04B7/26 , C04B28/04
摘要： PURPOSE:To obtain a cement compsn. for concrete, mortar and grout while effectively utilizing coal ash which is expected to be increasedly discharged and becomes difficult to discard as industrial waste. CONSTITUTION:This cement compsn. consists of 100 pts.wt. cement component made of Portland cement, 300-1,000 pts.wt. admixture made of coal ash and 5-15 pts.wt. admixture for concrete. Coal ash can be effectively utilized and a large-sized structure such as a man-made gathering-place for fish can be produced at a low cost without using an expensive admixture.

5. 发明专利

JPH08208293A ADMIXTURE FOR CONCRETE 失效
公开(公告)号：JPH08208293A
公开(公告)日：1996-08-13
申请号：JP4125695
申请日：1995-02-06
申请人： JUJO PAPER CO LTD
发明人： HAMADA SHINJI , SUMIYAMA HIROYUKI , INABA YOSHIKI , OSADA KOJI , TAKAHASHI HITOSHI
IPC分类号： C04B24/18 , C04B24/32 , C04B40/00 , C04B103/32
摘要： PURPOSE: To obtain an admixture for concrete capable of producing a concrete composition having excellent pressure transportation by a pump even when using an aggregate having qualities inferior in terms of particle diameter, particle size, etc. CONSTITUTION: This admixture for concrete is obtained by blending 100 pts.wt. of a lignin sulfonate-based AE(air entraining) water reducing agent with 1-50 pts.wt. ethylene oxide adduct to a sorbitan fatty acid monoester.

6. 发明专利

JPH0881248A ADMIXTURE FOR CONCRETE 失效
公开(公告)号：JPH0881248A
公开(公告)日：1996-03-26
申请号：JP24463594
申请日：1994-09-13
申请人： JUJO PAPER CO LTD
发明人： HAMADA SHINJI , SUMIYAMA HIROYUKI , KANEKO IKU , OGAWA KATSUMASA , TAKAHASHI HITOSHI
IPC分类号： C04B24/18 , C04B24/22 , C04B40/00
摘要： PURPOSE: To obtain an admixture capable of giving concrete compositions good in pump force feed characteristics, etc., even by using low-quality aggregates, by blending a ligninsulfonate-based AE water reducing agent with a specified amount of aminosulfonate resin(s). CONSTITUTION: This admixture for concrete is obtained by blending (A) 100 pts.wt. of a ligninsulfonate-based water reducing agent with (B) 1-50 pts.wt. of aminosulfonate resin(s). The purity of the component A is pref.

7. 发明专利

JPH10263313A REGENERATION OF CLEANING WATER FOR AGGREGATE FOR CONCRETE 失效
公开(公告)号：JPH10263313A
公开(公告)日：1998-10-06
申请号：JP7629697
申请日：1997-03-27
申请人： JUJO PAPER CO LTD
发明人： ICHIHARA TOSHIAKI , SUMIYAMA HIROYUKI , KANEKO IKU , KUDO MASAKUNI
IPC分类号： B01D21/01 , C04B18/16 , C04B22/00
摘要： PROBLEM TO BE SOLVED: To regenerate a cleaning water which gives no influence on the slump flow even when a flocculant deposits on crushed sand by subjecting a contaminated water produced in a cleaning process of an aggregate for a concrete to a treatment with carboxymethylcellulose and polyaluminum chloride so as to flocculate and precipitate the sludge, and then adding a cellulase to the supernatant. SOLUTION: A carboxymethylcellulose(CMC) is added to a contaminated water produced in a cleaning process of a crushed sand and the like so that the suspended substance which intrinsically has negative charges is further electrified into negative changes by the anionic property of the CMC. Then polyaluminum chloride(PAC) having positive charges is added to neutralize the charges so that even inorg. fine particles which can no be precipitated by the weak negative charges intrinsic to the inorg. suspended substance can be rapidly precipitated to clarify the contaminated water. When the recovered water contains CMC and PAC as the flocculant after the precipitate is separated, the flocculant affects the slump flow, therefore, a cellulase is added to decompose CMC. Thus, the regenerated cleaning water can be used to produced a good concrete.

8. 发明专利

JPH07247152A PRODUCTION OF CONCRETE 失效
公开(公告)号：JPH07247152A
公开(公告)日：1995-09-26
申请号：JP6671994
申请日：1994-03-10
申请人： JUJO PAPER CO LTD
发明人： HAMADA SHINJI , TAKADA MASASHI , TSUBOUCHI KATSUHIRO , SUMIYAMA HIROYUKI , ICHIHARA TOSHIAKI
IPC分类号： C04B14/26 , C04B24/06 , C04B24/18 , C04B24/22 , C04B24/26 , C04B24/30 , C04B28/02 , C04B103/40
摘要： PURPOSE:To obtain concrete capable of maintaining fluidity for many hours even by using a carbonate-containing aggregate. CONSTITUTION:Concrete containing 1,000 pts.wt. of carbonate-containing rock salt as part or the whole of an aggregate is used with 0.1-10 pts.wt. based on concrete of both of a dispersant for concrete consisting essentially of one or more of a naphthalenesulfonic acid formaldehyde condensate, a melaminesulfonic acid formaldehyde condensate, a methoxypolyethylene glycol monomethacrylic acid ester-methacrylic acid copolymer, a sulfanilic acid.bisphenol formaldehyde cocondensate and a ligninsulfonate and a dispersant for concrete consisting essentially of an oxycarboxylic acid or its salt.

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