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Sumitomo Durez Company, Ltd. Patents
Assignee:
Sumitomo Durez Company, Ltd.
Address:
Tokyo, JP
No. of patents:
58
Patents:


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Patent Number Title Of Patent Date Issued
6372862 Phenolic resin-based adhesive composition and process for producing the same April 16, 2002
The present invention provides phenolic resin-based adhesives which do not produce waste water and industrial wastes and which have good adhesive force, especially after being exposed to thermal history. That is, the present invention provides a phenolic resin-based adhesive composition
6326453 Process for producing phenol resin December 4, 2001
A novolak-type phenol resin with less unreacted phenol and a narrow molecular weight distribution is produced in high yield by reaction of a phenol with an aldehyde using an organophosphonic acid as a catalyst, while keeping a water concentration of reaction system at not more than 3
5098941 Process for producing phenolic resin composition and rubber composition containing the compositi March 24, 1992
Disclosed is a process for producing a phenolic resin composition characterized in that a novolak type phenolic resin modified with an unsaturated oil or an aromatic hydrocarbon resin, and hexamine are used as essential components, and these are kneaded by an open roll or a kneading
5034370 Color developer for pressure-sensitive recording paper July 23, 1991
A color developer for pressure-sensitive recording paper is produced by admising components comprising:(A) 100 parts by weight of a polyvalent metal salt of a co-condensation product of a substituted salicylic acid, an aromatic hydrocarbon and an aldehyde. Such a co-condensation product
4920186 Color developer for pressure sensitive recording paper and production thereof using phenol-mesit April 24, 1990
The present invention relates to a polyvalent metal-bound carboxyl-modified p-alkylphenol-mesitylene-formaldehyde resin composition produced by binding with a polyvalent metal a -alkylphenol-mesitylene-formaldehyde co-condensate containing a carboxyl group, to produce a color developer
4920185 Color developer for pressure-sensitive recording paper and production thereof using a phenol-xyl April 24, 1990
The present invention relates to a polyvalent metal-bound carboxyl-modified p-substituted phenol-xylene-formaldehyde resin composition produced by binding with a polyvalent metal a p-substituted phenol-xylene-formaldehyde co-condensate containing a carboxyl group, to produce a color deve
4870154 Method of producing a quick-curing novolac phenolic resin using ammonium halides September 26, 1989
A method of producing a novolac phenolic resin having quick-curing properties and good fluidity is disclosed, whereby the novolac resin is prepared by reacting a phenol with an aldehyde using an acidic catalyst and thereafter adding an ammonium halide. The ammonium halide is added in
4698370 Production of phenolic resin composite foam October 6, 1987
A phenolic resin composite foam is disclosed which is prepared by heating and foaming a novolak phenolic resin having a number average molecular weight of 250 to 600 and a bulk density of 0.15 to 0.5, a blowing agent, a blowing auxiliary compound and inorganic foamed particles. Additiona
4694028 Manufacturing method for phenol resin foam September 15, 1987
This invention is concerned with a method for producing phenol resin foam possessing a compact cellular structure, a high closed cell ratio and improved heat resistance. The method consists of using a resole type phenolic resin having a number average molecular weight of 150-400, sur
4647631 Modified liquid resole phenolic resinous composition for friction materials March 3, 1987
A resinous composition for friction materials, especially for non-asbestos type friction materials is disclosed. The composition is composed of a phenolic resin modified by the reaction product of an acrylonitrile-butadiene liquid rubber with an epoxy resin, and further modification
4539343 Refractory material September 3, 1985
A refractory composition or mixture utilizing basic aggregates is disclosed which does not discolor when a phenolic binder is used, and provides improved flexural strength. The composition contains specific proportions of phenolic resin and a compound having a pKa of less than 9.5 at
4529751 Resin coated sand for casting July 16, 1985
A phenolic resin for application in foundry shell molding operations having improved properties is disclosed. The phenolic resin is prepared by reacting aldehydes and a mixture of bisphenol A and bisphenol F to prepare a phenolic resin for coating foundry aggregates or sand to prepare sh
4501836 Liquid refractory binder February 26, 1985
A polymeric binder composition for refractory aggregates is disclosed. The binder is a resole type phenolic resin, solvent and a tar, pitch or mixtures thereof. The solvent has a boiling point of greater than 75.degree. C. and is added to the resole type phenolic resin to impart a vi
4468486 Coated sand and method for producing August 28, 1984
A resin coated sand for shell-molding processes is provided comprising the coating of foundry sand or aggregates with a phenolic resin and a carboxylic acid salt. The carboxylic acid salt is selected from a carboxylic acid salt of an element selected from groups Ia, Ib, IIa, IIb, III
4460717 Resin coated sand composition and method of producing same July 17, 1984
A resin coated sand for shell-molding foundry operations having improved shake-out properties for molds prepared therefrom is disclosed. Also disclosed are methods of producing said sand. The foundry aggregates or sand are coated with a phenolic resin containing from 0.2 to 40 parts of
4460716 Coated sand composition and method for producing same July 17, 1984
A process for preparing resin coated sand for shell molding foundry operations is disclosed wherein the resin utilized is a phenolic resin containing a bromophenol. The resin coated sand has improved shake-out properties and is especially formulated for low melting metals such as alu
4459377 Shell-molding resin coated sand July 10, 1984
An improved resin coated sand for use in foundry shell-molding applications is disclosed which has increased resistance to thermal shock at the time of pouring. The improved product uses a phenolic resin as binder with aromatic compounds selected from the following generic formulae:
4459376 Resin-coated sand for shell-molds and method for producing same July 10, 1984
A process for the preparation of a resin-coated sand for use in shell-molding operations wherein the molding operation is designed for metals such as aluminum, magnesium and their alloys which have a lower-melting temperature than iron. The process involves the coating of foundry san
4459375 Resin coated sand for shell foundry process July 10, 1984
An improved resin coated sand for use in foundry shell-molding applications is disclosed which has increased resistance to thermal shock at the time of pouring. The improved product uses a phenolic resin as binder with aromatic compounds selected from the following generic formulae:
4459374 Foundry binder composition July 10, 1984
This invention is concerned with foundry binder compositions for alkaline aggregates such as reclaimed sand, Olivia sand, alumina sand, etc., which cure at ambient temperatures. The binder composition is composed of phenolic resins, polyisocyanates and a hydrogen chloride emitting su
4452927 Resin coated sand for shell molding process June 5, 1984
Resin coated sand for foundry shell molding operations is provided which eliminates the cracking of the molds at the time of pouring. In conventional phenolic bonded sand molds, the abrupt thermal expansion caused by the pouring of the molten metal into the mold causes the mold to cr
4452926 Resin-coated sand composition and method for producing same June 5, 1984
An improved resin binder for shell-molding operations having improved shake-out properties is disclosed. The resin binder utilizes a lubricant-containing phenolic resin of the novolac or resole type, or a mixture of novolac and resole types, incorporated therewith is an organic chlor
4426484 Method for accelerating cure of resole type phenolic resins January 17, 1984
The cure of resin compositions comprising a mixture of a resole type phenol aldehyde resin and a novolac type phenol formaldehyde resin is improved by employing resorcinol as all or part of the phenolic component in the novolac type resin. The resin compositions are particularly useful a
4419477 Powder phenolic resin composition for dry process resin-bonded felt December 6, 1983
This invention relates to a powdered phenolic resin composition suitable for the production of dry processed resinbonded felt. The phenolic resin composition imparts a good release of the felt from the heated platen or belt and has a rapid cure rate. The powdered phenolic composition is
4418161 Resin coated sand and method for producing same November 29, 1983
This invention relates to a method for the production of an improved resin coated lubricated sand for use in shell molding processes, wherein the resin coated sand is especially useful in casting operations using aluminum, magnesium and their alloys.The sand is coated with a phenolic typ
4412045 Color developer for pressure-sensitive copying paper October 25, 1983
A color developer for pressure-sensitive copying papers is prepared by mixing a para-substituted difunctional phenol-aldehyde condensate and tri- or higher-functional phenol-aldehyde condensate. The tri- or higher-functional phenol-aldehyde condensate can be modified by a polyvalent
4409374 Color developer for pressure-sensitive copying paper October 11, 1983
A color developer for pressure-sensitive copying paper is prepared by mixing a polyvalent metal salt of a para-substituted difunctional phenol-aldehyde condensate and a tri- or higher-functional phenol-aldehyde condensate and/or a polyvalent metal modified tri- or higher-functional p
4369263 Friction material containing steel wool as reinforcing agent January 18, 1983
A friction material useful in automobile brakes and the like, comprises as a reinforcing agent steel wool coated with a thermosetting resin such as a phenolic resole resin.
4290928 Binder for dry hot coat foundry process September 22, 1981
A lubricant-containing binder for the dry hot coat foundry method comprising a solid resol type phenolic resin and a lubricant in an amount of about 0.5 to 10 percent by weight with respect to said phenolic resin.
4252700 Resin binder for foundry sand cores and molds February 24, 1981
This invention relates to a solid phenolic resin composition useful as a binder in the preparation of foundry sand cores and molds which comprises a solid novolac resin and a lubricant-containing solid resole resin wherein the lubricant is incorporated into the resole during the prep
4238429 Prilling process December 9, 1980
A process is provided for making a prilled product from a molten substance wherein steam or heated gas is passed through the nozzle which produces the prilled product prior to the introduction of the molten substance through the nozzle at the beginning of the process.
4238428 Process for making a prilled product December 9, 1980
In a process for making a prilled product from a molten substance therefor steam or heated gas is intermittently introduced into the prilling apparatus to clean the apparatus. In one embodiment the molten substance is passed through a filter zone prior to introduction to a nozzle provide
4225297 Nozzle pre-heating device in a prilling apparatus September 30, 1980
A nozzle pre-heating device is provided for use in a tower for prilling molten substances. The device comprises a pre-heating chamber which is open only at the upper portion thereof for pre-heating a prilling nozzle and is closed at the bottom to shield the nozzle from the cooling effect
4220441 Apparatus for making prills from melted substance September 2, 1980
An improved prilling tower is provided for the prilling of molten substances wherein a receiver equipped with an exhaust conduit is positioned below the nozzle during pre-heating of the nozzle prior to normal operation, after the end of a normal operating cycle or when the nozzle is
4216300 Color developer for pressure-sensitive copying paper August 5, 1980
A color developer for pressure-sensitive copying papers is prepared by mixing a para-substituted difunctional phenol-aldehyde condensate and tri- or higher-functional phenol-aldehyde condensate. The tri- or higher-functional phenol-aldehyde condensate can be modified by a polyvalent
4216299 Color developer for pressure-sensitive copying paper August 5, 1980
A color developer for pressure-sensitive copying paper is prepared by mixing a polyvalent metal salt of a para-substituted difunctional phenol-aldehyde condensate and a tri- or higher-functional phenol-aldehyde condensate and/or a polyvalent metal modified tri- or higher-functional p
4196114 Process for producing resin-coated foundry sand April 1, 1980
A lubricant-containing binder for the dry hot coat foundry method comprising a solid resol type phenolic resin and a lubricant in an amount of about 0.5 to 10 percent by weight with respect to said phenolic resin.
4185002 Method for manufacturing foundry sand cores and molds January 22, 1980
A method for manufacturing foundry sand cores and molds, which comprises preforming a foundry sand mixture comprising sand, a vinyl acetate resin and an organic solvent for said resin and optionally a resin selected from the group consisting of aromatic thermoplastic resins and aromatic
4179365 Process for treating waste water December 18, 1979
A process is provided for treating waste liquor or waste water containing free phenols in excess of 10,000 ppm, harmful to aerobic bacteria present in the activated sludge for general purpose, comprising the steps of (1) reducing the phenol content to 100 ppm or less by means of solvent
4166166 Process for producing acetophenone-modified phenolic resin August 28, 1979
Phenolic novolak resins are produced from acetophenone, particularly by-product acetophenone obtained from the cumene process for manufacturing phenol, by the process of (1) reacting acetophenone with an aldehyde under alkaline conditions, and (2) reacting the product of step (1) with a
4157993 Resin-coated sand compositions June 12, 1979
This invention relates to resin-coated sand compositions useful in the preparation of foundry sand cores and molds comprising sand, a solid novalac resin, a lubricant-containing solid resole resin, and optionally, hexamethylenetetramine in an amount of up to about 5 parts by weight based
4131582 Method for preparing stable aqueous emulsion of phenolic resin December 26, 1978
A method is disclosed for preparing a stable aqueous emulsion of a phenolic resin which is characterized by adding polyacrylamides and, if required, further adding dispersing agents to the phenolic resin during or after the completion of a reaction of components which comprise (A) betwee
4125502 Polyvinyl acetate-modified phenolic resin composition November 14, 1978
Adhesive compositions comprising a mixture of polyvinyl acetate and an alcohol soluble resol phenolic resin and about 2 to 20 parts by weight of lower polyhydric alcohol per 100 parts by weight of the resin solids have enhanced binding strengths on curing even after a prolonged open asse
4122211 Process for coating electric or electronic elements October 24, 1978
A process for coating electronic elements comprises the steps of (1) forcibly impregnating an element with a liquid thermosetting resin undercoat, (2) depositing a powdered coating material on the element as a topcoat by electrostatic fluidized bed dip coating the element before the
4115327 Phenolic resin color developing compositions for copying papers and methods of preparation September 19, 1978
Improved aqueous color developing compositions for copying papers are prepared by emulsifying phenolic resins having relatively low molecular weights. The aqueous emulsions are prepared by condensing a phenol and an aldehyde in the presence of an acid catalyst, and without the customary
4112160 Solid adherend substrates bonded with rubber cement compositions September 5, 1978
Rubber cement compositions which consist of rubbers and multi- (three and more) functional phenol-aldehyde modified bifunctional phenol resins, which are made by first obtaining the bifunctional phenolic resin by condensing 1 mole of bifunctional phenol with 0.5 to 3.0 moles of aldeh
4109057 Method for accelerated curing of phenolic resin adhesives August 22, 1978
A method for accelerated curing of phenolic resin adhesives comprises adding powdered green tea to a thermosetting phenolic resin at about ambient temperature.
4104698 Wax compositions for flame retardant electrical insulation coatings August 1, 1978
A ceramic capacitor is provided having a flame retardant electrical insulation coating characterized by blending 10 - 15 percent by weight of an uniformly melt-blendable non-heat-reactive type synthetic resin, with melting points between 70.degree. and 150.degree. C. into a flame-ret
4097443 Method for manufacturing foundry molds June 27, 1978
A method for manufacturing foundry molds, which comprises preforming a foundry sand mixture comprising sand, a resol type phenol-formaldehyde resin, a solvent, and optionally, a curing agent for said resin, or a curing agent for said resin and a thermoplastic resin; and thereafter re
4082661 Activated carbon and preparation thereof April 4, 1978
Activated carbon filtration materials are obtained by impregnating phenolic resins into inorganic porous bodies, such as ceramic filter tubes and plates, then baking the impregnated bodies to carbonize the resins. The invention also includes improved methods for purifying aqueous liquids
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