141 |
Resin composition for artificial marble |
JP14929195 |
1995-06-15 |
JPH092858A |
1997-01-07 |
OKUMA HIDEO; YAMAZAKI MASASHI |
PURPOSE: To produce an artificial marble having good water-resistance, appearance and transparent feeling using an inexpensive mold in a short time by using a composition composed of a specific unsaturated polyester resin and glass frit. CONSTITUTION: The resin composition for artificial marble is produced by compounding 100 pts.wt. of an unsaturated polyester resin composed of a polymerizable monomer and an unsaturated polyester obtained by the polycondensation of a polyhydric alcohol and a total acid component composed of an α, β-unsaturated dibasic acid or its anhydride and a saturated dibasic acid or its anhydride wherein the amount of the saturated dibasic acid in the total acid component is 40-60mol% and terephthalic acid accounts for >=50mol% of the total saturated dibasic acid component with 100-300 pts.wt. of glass frit surface-treated with a silane coupling agent and having a refractive index of 1.53-1.56, an average particle diameter of <=30μm and a sodium oxide content of <=5wt.%. The composition is molded by hot-casting method at 60-90 deg.C to obtain a molded artificial marble. |
142 |
Inorganic sound absorbing board |
JP2924395 |
1995-02-17 |
JPH08217523A |
1996-08-27 |
YOKOYAMA YUZO; KAMIYA MASATAKE |
PURPOSE: To provide a noncombustible inorg. sound absorbing board excellent in sound absorbing property and having sufficiently high gas permeability to carry out rapid ventilation.
CONSTITUTION: This inorg. sound absorbing board is made of an inorg. porous body having an acoustic absorptivity of ≥0.85 to each of sounds having 500Hz, 1,000Hz, 2,000Hz and 4,000Hz frequencies and having 80-400cm
3.cm/ cm
2.sec.cmH
2O gas permeability.
COPYRIGHT: (C)1996,JPO |
143 |
Gypsum board |
JP26404093 |
1993-09-29 |
JPH0797249A |
1995-04-11 |
SHIOURA KOZO |
PURPOSE:To obtain a gypsum slurry having excellent fluidity and a gypsum board having a smooth and beautiful surface and extremely high strength by using glass fibers having flat cut faces as reinforcing material for the gypsum board. CONSTITUTION:Gypsum is compounded with 0.01-20wt.% of glass fibers having flat cut faces of which the ratio of the longest diameter D2 to the shortest diameter D1 (D2/D1) is >=1.2 and of 6-25mm in length. |
144 |
Method for modifying surface of carbon material |
JP9440293 |
1993-04-21 |
JPH06305858A |
1994-11-01 |
TANABE YASUO; SASAKI YASUYUKI; OBARA HIDEHIKO; IMAKI SUNAO |
PURPOSE: To enable modification of the surfaces of carbon materials of various kinds by a simple process under a mild condition without requiring a specific device by bringing fluorine gas into contact with the surface of a carbon material and then bringing a prescribed monomer to the surface of the carbon material.
CONSTITUTION: 0.1-50% fluorine gas diluted with an inert gas such as nitrogen or helium is brought into contact with the surface of a carbon material under 1Torr to 2 atmospheric pressure at -70 to 200°C for 1 second to 10 days, then one or more monomers having Alfrey-Price's (e) value of 1.7>(e)>-1.0 handleable in a gaseous state is brought into contact with the surface of the carbon material to cause polymerization reaction on the surface of the carbon material to form a polymer film having several Å to several 100 micron thickness. Optionally, various gases are brought into contact with the end of the polymer to stop the polymerization or further another monomer is brought into contact with the surface of the carbon material and a different polymer layer is formed to give a carbon material having a modified surface of high water repellency and maintaining surface characteristics of ≥100° contact angle with water.
COPYRIGHT: (C)1994,JPO |
145 |
Fluidity decline-preventive dispersant for cement composition |
JP35398192 |
1992-12-15 |
JPH06183804A |
1994-07-05 |
ISHITOKU HIDEAKI; MORIMOTO TAKATOSHI; KAWAMURA MASANOBU; NAKAMOTO TOMOFUMI |
PURPOSE: To provide a dispersant for cement capable of substantially reducing slump loss, consisting mainly of bisphenol-based condensates which can gradually be adsorbed on cement particles.
CONSTITUTION: The dispersant consists mainly of bisphenols-aromatic aminosulfonic acid-formaldehyde condensates (component(s) with molecular weight of 2000-20000 accounting for ≥65wt.% thereof ≤0.97 in the adsorption ratio in a cement-water slurry (comparing the adsorption after a lapse of 10min with that after a lapse of 30 min). To obtain this condensate, (A) bisphenols, (B) an aromatic aminosulfonic acid, (C) formalin and (D) an alkali are made to react at the molar ratio A/B/C/D of 0.5:(1.1 to 1.5):(1.0 to 2.0):(0.9 to 2.1) in an aqueous state at 75-85°C for 10-15hr; and the resulting condensates are treated with a ultrafiltration membrane with the fractionating molecular weight of 100000 to eliminate higher molecular weight components).
COPYRIGHT: (C)1994,JPO&Japio |
146 |
Fiber-trinforcde cement-based composite material |
JP21945492 |
1992-08-18 |
JPH0664954A |
1994-03-08 |
YAMADA TAKASHI; YAMADA KANJI |
PURPOSE:To obtain a fiber reinforced cement-based composite material capable of smoothly carrying out stress transmission from a cement-based material cured body to a continuous fiber and capable of continuously raising flexural offset yield strength without lowering flexural offset yield strength of the fiber reinforced cement based composite material even after causing crack to cement- based material cured body by action of strong external stress on the fiber reinforced cement-based composite material. CONSTITUTION:The objective fiber reinforced cement-based composite material is obtained by joint using a >=1.5vol.% short fiber having >=2.0t/mm<2> tensile modulus and carbon fiber bar or carbon fiber mesh as a reinforcing fiber mixed in a ceramic matrix. In a range in which tensile modulus of a continuous carbon fiber used in the carbon fiber bar or carbon fiber mesh is >=20.0t/mm<2> and the ratio of tensile strength-reinforcing bar is <=0.5%, its hybrid effects are remarkably exhibited. |
147 |
Manufacture of fibrous composite, especially two-floor plate, and plate manufactured thereby |
JP5814593 |
1993-03-18 |
JPH068215A |
1994-01-18 |
HAINTSU SATSUTORAA; FUORUKAA TOORE; ZEBARUDO PARUHOON; BERUNHARUTO SHIYUMERUMAA |
PURPOSE: To enhance the bending strength by taking procedures to specify the dry bulk density of a composite substance in a concentrated tissue state based on the density and ratio of a composition, when a composite substance is manufactured of a binder which is hardened by hydration with a mixed water and a fiber (a supply substance). CONSTITUTION: A composite substance, especially a two-floor plate is manufactured of a binder which is hardened by hydration with a mixed water and a fiber (a supply substance). In this case, when the fiber and the binder are specified by RF respectively, the ratio of complete hydration: hydration-water- fiber-binder by WO, the homogeneous mixture by the ratio of fiber: binder XF, the ratio of water: binder by W and the dry bulk density in a concentrated tissue state by QO respectively, these are to harder so that the separately described relationship is satisfied. Further all the supply substances are mixed and the ratio of water: binder is hardened to be W<=1.5WO. In addition, the produced substance is homogeneously diffused in the form of fleece and this fleece is compressed to the lowest bulk density of 0.9QO. Besides the complete hardening phase in the following stage under pressure is made to exist. |
148 |
Production of glazed cement product |
JP13881792 |
1992-05-29 |
JPH05330949A |
1993-12-14 |
KITAGAWA SATOSHI; TORII MASAYOSHI; YOSHIZAWA TAKAHIRO |
PURPOSE:To produce a glazed cement product having excellent quality and performance while preventing the generation of intrusion and peeling on the glazed surface by forming a glazing layer on the surface of a formed cement product, baking the glazing and rehydrating and curing the cement product. CONSTITUTION:The glazed cement product is composed of a glazing constituting a glazing layer 20 and a formed cement product 10 and satisfies the following formula. 0.7<=(alpha1-alpha2)XDELTAt/beta<=1.3 wherein theta1 is thermal expansion coefficient of the glazing, alpha2 is thermal expansion coefficient of the formed cement product, DELTAt is temperature lowering after baking and f3 is hygroscopic swelling ratio of the formed cement product in rehydration process. |
149 |
Self-filling concrete composition |
JP12366391 |
1991-05-28 |
JPH04349154A |
1992-12-03 |
FUKUDA MASAHIRO; TAMAOKI RYOICHI; IIZUKA MASANORI; YAMATO FUJIO |
PURPOSE:To provide a self-filling concrete composition without need for compaction. CONSTITUTION:This self-filling concrete composition contains a high- performance water reducing agent, cement (C), blast slag (SL) and a thin aggregate (S), and fulfils conditions (a) to (c): (a) SL/(S+SL)=9 to 25vol.%; (b) SL/C=24 to 65wt.%; (c) (C+SL)/(total concrete composition)=14 to 24vol.%. Since the high flowability, unseparability and initial strength are secured by this composition, the use and application of concrete are remarkably improved, and especially the noise is reduced and the process is rationalized in the production of a concrete product. |
150 |
JPS61500221A - |
JP50383784 |
1984-10-18 |
JPS61500221A |
1986-02-06 |
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