Phenolic Reactant Contains A Sulfur Atom Patents (Class 528/150)
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Patent number: 4650839Abstract: Modified phenolic resins and cured resins prepared therefrom.Type: GrantFiled: January 23, 1986Date of Patent: March 17, 1987Assignee: Allied CorporationInventors: Sajal Das, Dusan C. Prevorsek
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Patent number: 4608431Abstract: A method for making polyimide polymers is provided by effecting reaction between an aliphatically unsaturated imide, such as maleimide, formaldehyde, and an organic polyamine, for example trimethylene bis(4-aminobenzoate), for example in refluxing ethanol. The polyimides produced by the simple one-step method are pure, and exhibit superior toughness, and reduced shrinkage upon cure by heating. The new product are useful as molding compounds, laminating resins, and the like, being especially suitable for airplane parts, advanced composites, high performance adhesives and printed circuit boards.Type: GrantFiled: January 29, 1985Date of Patent: August 26, 1986Assignee: American Cyanamid Co.Inventor: Dalip K. Kohli
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Patent number: 4578448Abstract: Disclosed are high-ortho phenol-formaldehyde resoles having stable hemiformal groups. These resoles are of low viscosity, are essentially free of unbound water and volatile organic compounds. They are curable to phenolic formaldehyde resinous solids and are particularly suitable for use in liquid injection molding processes to form composites.Type: GrantFiled: December 14, 1983Date of Patent: March 25, 1986Assignee: Union Carbide CorporationInventors: George L. Brode, Sui-Wu Chow
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Patent number: 4555554Abstract: Oligomeric vinyl esters are prepared by reacting (A) an epoxy resin prepared by co-oligomerizing (1) a mixed cyanate of a polyphenol and (2) an aromatic polyamine with (B) a monounsaturated monocarboxylic acid.These vinyl ester resins are (oligomeric vinyl ester and copolymerizable monomer blend) useful in the preparation of laminates, composites, castings, coatings and the like.Type: GrantFiled: February 15, 1985Date of Patent: November 26, 1985Assignee: The Dow Chemical CompanyInventor: Robert E. Hefner, Jr.
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Patent number: 4555553Abstract: Novel hydroxyaromatic oligomers are prepared by the co-oligomerization reaction of a mixed cyanate of a polyphenol with an aromatic polyamine. These oligomers are useful in preparing epoxy resins therefrom.Type: GrantFiled: February 15, 1985Date of Patent: November 26, 1985Assignee: The Dow Chemical CompanyInventor: Robert E. Hefner, Jr.
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Patent number: 4468507Abstract: Large-scale preparation of branched novolacs by the acid catalyzed, exothermic condensation of methylol-reactive phenols with polymethylol diphenols is made practical by first carrying out the reaction on a scale which permits temperature control simply by cooling and then separately adding more of the premixed reactants and the catalyst at rates such that the temperature of the reaction mixture can readily be controlled.Type: GrantFiled: November 21, 1983Date of Patent: August 28, 1984Assignee: The Dow Chemical CompanyInventor: Theodore L. Parker
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Patent number: 4444942Abstract: A bath composition for cataphoretic electrocoating of conductive surfaces contains coating agents which have been rendered soluble or dispersible with acid, contain basic nitrogen groups and carry groups of the general formulae (1) and (11) ##STR1## and, optionally, also groups of the general formulae (III) and/or (IV) ##STR2## where R.sup.1 and R.sup.2 are each alkyl, hydroxyalkyl or alkoxyalkyl, R.sup.3 and R.sup.4 are each hydrogen or methyl, R.sup.5 and R.sup.6 are each hydrogen, alkyl or a divalent radical of a polymer molecule which is bonded to a phenol or phenol ether, n.sup.1 is 1, 2 or 3 and n.sup.2 is 1 or 2, and where the oxygen bonded to the phenyl radical is either in the form of the OH group or etherified.Type: GrantFiled: June 15, 1982Date of Patent: April 24, 1984Assignee: BASF AktiengesellschaftInventors: Fritz E. Kempter, Eberhard Schupp, Gunther Sabelus
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Patent number: 4430491Abstract: Thermoplastic and thermoset polymeric compositions, having particular utility in the area of molding applications, are obtained by reacting a compound containing a plurality of oxazoline groups with a phenol or a phenolic resin each containing a plurality of aromatic hydroxyl groups.Type: GrantFiled: September 30, 1982Date of Patent: February 7, 1984Assignee: Ashland Oil, Inc.Inventors: Billy M. Culbertson, Timothy A. Tufts
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Patent number: 4424238Abstract: An adhesive having a high adhesive strength and capable of bonding firmly polyester fibrous material with rubber is disclosed, which comprises a mixture of components A and B in a mixing ratio of A/B of 100/5-100/30, said component A being formaldehyde condensate obtained by reacting formaldehyde with one member selected from the following members (1)-(4): (1) a mixture of resorcin with one of m-cresol, m-methoxyphenol, 3,5-xylenol and m-xylene, (2) a mixture of 5-methylresorcin with m-cresol or with m-methoxyphenol, (3) a mixture of m-cresol with p-chlorophenol and (4) m-cresol, and having substantially an average molecular weight of 300-600; and said component B being one member selected from the following members (5)-(7); (5) a formaldehyde condensate obtained by reacting formaldehyde with one of 3,5-xylenol, m-t-butylphenol and a mixture of m-cresol with m-t-butylphenol and having substantially an average molecular weight of 200-500, (6) 4,4'-thio-bis(6-t-butyl-3-methylphenol) and (7) 1,1'-bis(2,4-dihydroType: GrantFiled: April 6, 1982Date of Patent: January 3, 1984Assignee: Bridgestone Tire Company LimitedInventors: Toshihiro Yotsumoto, Kazuo Koyama
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Patent number: 4400492Abstract: Disclosed is a color-developer for pressure-sensitive recording sheets, comprising a co-condensate of a reaction intermediate of a p-substituted phenol and a trifunctional or higher phenol, or a polyvalent metal salt of said co-condensate, said reaction intermediate being obtained by the reaction of said p-substituted phenol under acidic conditions with formaldehyde or a substance capable of generating formaldehyde.Type: GrantFiled: March 24, 1981Date of Patent: August 23, 1983Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Makoto Asano, Saburo Kawashima, Yoshimitu Tanabe, Hisamichi Murakami
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Patent number: 4391718Abstract: Reaction products which are prepared by sulphonation or sulphomethylation and formaldehyde condensation of compounds of the formula ##STR1## wherein R.sub.1 represents C.sub.1-4 -alkyl,and, if appropriate, subsequent conversion of the resulting sulphonic acids into their salts are used as dispersing agents.Type: GrantFiled: August 14, 1981Date of Patent: July 5, 1983Assignee: Bayer AktiengesellschaftInventors: Gunther Reitz, Karlhans Jakobs, Gunther Boehmke
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Patent number: 4390340Abstract: Mineral tanned leather is frequently retanned with synthetic tanning agents to improve the fullness and softness, but leather retanned by the prior art methods is difficult to dye in full shades with anionic dyes. According to the invention, condensation products of C.sub.1-4 aldehydes with certain aromatic sulfonic acids or carboxylic acids containing amino groups are employed for retanning, thereby improving the receptivity of the leather for anionic dyes. These acids have the general formula ##STR1## where X and X' are independently H, --CH.sub.2 --SO.sub.3 H or --CH.sub.2 --OH, A is a benzene radical, Y and Z are independently H, --SO.sub.3 H or --CO.sub.2 H, R is H or C.sub.1-4 -alkyl and n is from 0 to 10, with the proviso that at least one sulfonic acid or carboxyl group is present in the molecule.Type: GrantFiled: June 30, 1981Date of Patent: June 28, 1983Assignee: BASF AktiengesellschaftInventor: Dietrich Lach
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Patent number: 4381369Abstract: A water-base well drilling, workover or completion fluid containing a fluid loss control agent prepared by pre-reacting sulfonated phenol with formaldehyde under alkaline conditions and then reacting the mixture with phenol under controlled conditions is described.Type: GrantFiled: October 9, 1981Date of Patent: April 26, 1983Assignee: Georgia-Pacific CorporationInventor: Howard W. Holmquist
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Patent number: 4322300Abstract: A water-base well drilling, workover or completion fluid containing a fluid loss control agent prepared by pre-reacting sulfonated phenol with formaldehyde under alkaline conditions and then reacting the mixture with phenol under controlled conditions is described.Type: GrantFiled: May 27, 1980Date of Patent: March 30, 1982Assignee: Georgia-Pacific CorporationInventor: Howard W. Holmquist
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Patent number: 4252938Abstract: An acid agent comprises a liquid water-insoluble product of concurrent reaction of:(a) one mole of an hydroxy(R)-methyl derivative of phenol in which 0.4-2.0 moles of HO--CH(R)-groups are present per one mole of phenol, wherein R equals H--, CH.sub.3 --, or(b) one mole of phenol and 0.3-2.0 moles of an aldehyde and(c) 0.03-100.0 moles of an aryl sulphonic acid, having an acid number from 10 to 300 (mg.KOH/g) with a maximum water content of 35% by weight.The process of reacting said components is conducted in a flow reactor for 0.1-10 minutes at 50.degree.-150.degree. C.The acid agent according to the invention may be modified with other substances, such as amines, alcohols, or acids to impart additional useful properties thereto. The acid agent has low viscosity, low corrosive activity, improves the strength of phenol-formaldehyde resins cured therewith by 30% and lowers their water absorption capacity by 2-10 times.Type: GrantFiled: August 29, 1977Date of Patent: February 24, 1981Inventors: Vasily D. Valgin, Alexandr M. Vasilenko, Dmitry V. Valgin, Ljudmila A. Istratova
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Patent number: 4247293Abstract: The invention relates to sulphonated, aromatic reaction products as agents for tanning hides and leather. They are obtained by reacting a sulphonation product, which is previously formed from a diphenyl ether, a phenol and a sulphonating agent, with formaldehyde, with a reaction mixture of an aminoplast-forming agent and formaldehyde or with an aminoplast precondensate.Type: GrantFiled: February 12, 1979Date of Patent: January 27, 1981Assignee: Ciba-Geigy CorporationInventor: Albert Wurmli
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Patent number: 4245996Abstract: Condensation products which are obtained by co-condensation, in an acid aqueous medium, of terphenylsulphonic acids, naphthalenesulphonic acid, bis-(4-hydroxyphenyl) sulphone and compounds which release formaldehyde are used as tanning agents for the production of leather and as re-tanning agents for re-tanning mineral-tanned leather.Type: GrantFiled: July 25, 1979Date of Patent: January 20, 1981Assignee: Bayer AktiengesellschaftInventors: Franz Schade, Reinhard Nebeling, Bruno Zinz
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Patent number: 4211856Abstract: A process for producing an acid agent which comprises reaction of sulphonated phenol and formaldehyde in an "ideal" displacement reactor at a temperature within the range of from 50.degree. to 120.degree. C. at a constant molar ratio of said components. The reaction may be carried out in the presence of additives such as urea or orthophosphoric acid.The process according to the present invention has an increased productivity at reduced power and labor inputs as compared to the prior art processes.Type: GrantFiled: January 5, 1978Date of Patent: July 8, 1980Inventors: Vasily D. Valgin, Alexandr M. Vasilenko, Anatoly Y. Morozov, Vadim D. Chesnokov
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Patent number: 4168365Abstract: A flame-retardant phenolic resin which comprises the product obtained on(a) reacting at least one halogenated compound represented by the general formula (I) ##STR1## wherein A is --CH.dbd.CH.sub.2 or --O--CH.sub.2 --CH.dbd.CH.sub.2, X is a chlorine atom or a bromine atom, and n is an integer of 1, 2 or 3, with at least one phenol in the presence of an acidic catalyst; and(b) reacting the resulting reaction product with at least one phosphoric acid ester compound containing a phenolic OH group represented by the general formula (II), (III) or (IV). ##STR2## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents an unsubstituted or substituted hydrocarbyl group, where R.sub.1 and R.sub.2 may be the same or different, and n is 1, 2 or 3, and at least one aldehyde or a precursor thereof in the presence of an acidic or alkali catalyst; and a process for producing the flame-retardant phenolic resin.Type: GrantFiled: November 30, 1977Date of Patent: September 18, 1979Assignee: Matsushita Electric Works, Ltd.Inventors: Hidekazu Takano, Toshiharu Mikawa, Kazuhiko Nemoto
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Patent number: 4150944Abstract: The invention relates to sulphonated, aromatic reaction products as agents for tanning hides and leather. They are obtained by reacting a sulphonation product, which is previously formed from a diphenyl ether, a phenol and a sulphonating agent, with formaldehyde, with a reaction mixture of an aminoplast-forming agent and formaldehyde or with an aminoplast precondensate.Type: GrantFiled: April 11, 1977Date of Patent: April 24, 1979Assignee: Ciba-Geigy CorporationInventor: Albert Wurmli
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Patent number: 4110279Abstract: A polymer derived by heating in the presence of an acid catalyst at between about 65.degree. C. and 260.degree. C.I. a reaction product, a cogeneric mixture of alkoxy functional compounds, having average equivalent weights in the range from about 220 to about 1200, obtained by heating in the presence of a strong acid at about 50.degree. C. to about 250.degree. C.(a) a diaryl compound selected from naphthalene, diphenyl oxide, diphenyl sulfide, their alkylated or halogenated derivatives or mixtures thereof,(B) formaldehyde or formaldehyde-yielding derivative,(C) water, and(D) a hydroxy aliphatic hydrocarbon compound having at least one free hydroxyl group and from 1 to 4 carbon atoms, which mixture contains up to 50 percent by weight unreacted (A); withIi. at least one monomeric phenolic reactant selected from the group ##STR1## WHEREIN R is selected from the group consisting of ##STR2## HYDROGEN, ALKYL RADICAL OF 1-20 CARBON ATOMS, ARYL RADICAL OF 6-20 CARBON ATOMS, WHEREIN R.sub.Type: GrantFiled: February 3, 1977Date of Patent: August 29, 1978Assignee: The Dow Chemical CompanyInventors: Donald L. Nelson, Norman T. Herbert