Patents Examined by Thomas De Benedictis, Sr.
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Patent number: 4104210Abstract: Thermoplastic elastomeric compositions, comprising blends of high unsaturation diene rubber and thermoplastic olefin resin in which the rubber is cured, exhibit superior physical properties including improved toughness.Type: GrantFiled: December 17, 1975Date of Patent: August 1, 1978Assignee: Monsanto CompanyInventors: Aubert Y. Coran, Raman P. Patel
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Patent number: 4104328Abstract: Impact-resistant thermoplastic molding compositions having a hard component comprising a styrene/acrylonitrile copolymer and a soft component comprising a graft copolymer of styrene and acrylonitrile on a rubbery polymer containing butadiene. The rubbery polymer serving as base for the graft copolymer is produced by polymerization or the monomer of monomers forming said polymer in aqueous emulsion and in the presence of a small amount of an alkanol of from 1 to 4 carbon atoms. The compositions have improved color and color stability and may be processed by conventional methods to form shaped articles.Type: GrantFiled: January 5, 1976Date of Patent: August 1, 1978Assignee: BASF AktiengesellschaftInventors: Johann Swoboda, Rudolf Stephan, Gerhard Heinz
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Patent number: 4104206Abstract: A plastic by-product can be reprocessed by embrittling the plastic by-product at a low temperature, crushing the embrittled by-product to about the same particle size as that of the virgin plastic, adding fine powder of the same or other material to the thus crushed by-product in order that the fine powder is deposited onto the surface of the crushed by-product, and then raising the temperature of the by-product to room temperature. The thus obtained reprocessed material can effectively be utilized as a bulking filler for the virgin plastic or for the other uses.Type: GrantFiled: March 17, 1976Date of Patent: August 1, 1978Assignee: Hitachi, Ltd.Inventors: Takeshi Hachisu, Akinari Uchida
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Patent number: 4104327Abstract: An adhesive composition comprising(A) 100 parts by weight of an elastomer consisting of (I) 30 to 100% by weight of a thermoplastic elastomer expressed by the general formula (S-B).sub.n or (S-B).sub.n-1 --S in which S is substantially a polystyrene block, B is substantially a polybutadiene block, and n is an integer of from 2 to 10, and (II) 70 to 0% by weight of a thermoplastic elastomer expressed by the general formula (S--I).sub.n or (S-I).sub.n-1 --S in which S is substantially a polystyrene block, I is substantially a polyisoprene block, and n is an integer of from 2 to 10, and(B) 50 to 250 parts by weight of a hydrocarbon resin containing 40 to 95% by weight of a 1,3-pentadiene unit and 60 to 5% by weight of an .alpha.-methylstyrene unit in the polymer chain and having a softening point of 60.degree. to 140.degree. C.Type: GrantFiled: January 12, 1976Date of Patent: August 1, 1978Assignee: Nippon Zeon Co. Ltd.Inventors: Hisaaki Inoue, Hisataka Komai, Seiichi Okada
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Patent number: 4102944Abstract: A low profile unsaturated polyester resin composition comprising (A) a reaction product between (1) a saturated polyester having a molecular weight of 3,000 - 50,000 obtained from a saturated polycarboxylic acid and a polyhydric alcohol and (2) an unsaturated monoglycidyl compounds, (B) an unsaturated polyester, and (C) an unsaturated monomer copolymerizable with the reaction product (A) and the unsaturated polyester (B) which gives a molded articles of improved surface smoothness and dimensional stability without deterioration of strength peculiar to unsaturated polyester resins.Type: GrantFiled: September 16, 1976Date of Patent: July 25, 1978Assignee: Sumitomo Chemical Company, LimitedInventors: Yoshiya Fukuyama, Katsuo Akagane, Takao Miwa
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Patent number: 4101520Abstract: A methylated, methylolated melamine composition having a certain combined formaldehyde content, a certain combined methanol content in the form of methoxymethyl groups, a certain -NH content and a certain content of a free methylol groups, the process of preparing the same and the use of such a melamine composition in admixture with other polymeric materials to provide coating compositions.Type: GrantFiled: July 19, 1976Date of Patent: July 18, 1978Assignee: American Cyanamid CompanyInventor: Leslie Boldizar
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Patent number: 4101464Abstract: Cellular polymeric solids are made by mixing an acidulous or acidic polymerizable medium that is polymerizable and/or cross-linkable by a free radical mechanism (e.g. an unsaturated polyester) with an effective amount of two or more acid sensitive mono- or poly-azo compounds containing the group: ##STR1## wherein Y is an acid sensitive group (e.g.Type: GrantFiled: September 16, 1976Date of Patent: July 18, 1978Assignee: Pennwalt CorporationInventors: Ernest Rudolph Kamens, Donald Milton Kressin, Harold Carl Lange, Ronald Edward MacLeay
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Patent number: 4101498Abstract: An oil-resistant, fire-resistant polymer composition is disclosed which is useful in coating electrical conductors. The composition comprises a block copolymer, extending oil, polymeric alpha-olefin, filler and fire retardant package comprising antimony trioxide, an adduct of hexachlorocyclopentadiene and a zinc borate.Type: GrantFiled: May 27, 1976Date of Patent: July 18, 1978Assignee: Shell Oil CompanyInventor: John L. Snyder
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Patent number: 4098980Abstract: A process for the non-aqueous dispersion polymerization of a conjugated diolefin monomer, for instance, butadiene or isoprene, in a liquid hydrocarbon dispersion medium, for instance, n-butane or n-pentane with a Ziegler Natta catalyst, for instance, triisobutylaluminum/titanium tetrachloride while said conjugated diolefin is in the presence of a block copolymer dispersion stabilizer. The block copolymer dispersion stabilizer is a copolymer which contains at least two blocks of polymer linked by chemical valences, at least one block (A block) is soluble in liquid organic dispersion medium and at least another block (B block) is insoluble in the dispersion medium and the stabilizer acts to disperse polymers of conjugated diolefins which are formed in the stabilizer's presence. The A block is exemplified by polyisoprene, poly(t-butyl styrene) and poly(vinyl toluene). The B block is exemplified by polystyrene, poly(.alpha.Type: GrantFiled: June 24, 1976Date of Patent: July 4, 1978Assignee: The Goodyear Tire & Rubber CompanyInventors: Richard A. Markle, Richard G. Sinclair
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Patent number: 4098845Abstract: This invention relates to crystallizable polyester compositions having improved molding characteristics. Crystallization rates and properties are improved by the addition of a polymer derived from meta or para diisopropenyl benzene and such polymers terminated by .alpha.-methyl styrene.Type: GrantFiled: March 11, 1976Date of Patent: July 4, 1978Assignee: The Goodyear Tire & Rubber CompanyInventor: Max H. Keck
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Patent number: 4097419Abstract: A process for producing stable urea-aldehyde polymers with high structural strength from two storable liquid ingredients. In this process, partially cured liquid urea-formaldehyde resin is reacted with an aqueous cross-linking solution comprising one or more alkyl or aryl dialdehydes containing two to eight molecular carbons and the hydrogen ion concentration needed to catalyze the completion of the reaction of the dialdehydes and the urea-formaldehyde. The process for producing urea-aldehyde polymers, having improved structural strength and reduced aldehyde vapor emission during their production and prolonged use, is especially effective for manufacturing products for the building industry, such as urea-aldehyde insulating foam, wood-filled particle board, and plywood. The increased polymer strength and the elimination of the hazardous and objectionable aldehyde odor is achieved by maintaining the molecular ratio of total aldehyde moieties to urea to about 1.Type: GrantFiled: September 26, 1977Date of Patent: June 27, 1978Assignee: Waverly Chemical Co.Inventor: William Percy Moore, Jr.
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Patent number: 4097549Abstract: This invention relates to an improved polymeric polyblend characterized by a blend of (A) a polymer of at least one monoalkenyl aromatic monomer having dispersed therein an amount sufficient to toughen said polyblend of a (B) diene rubber, said rubber being dispersed as crosslinked grafted rubber particles wherein said improvement comprises (C) said diene rubber particles having a rubber moiety structured in a novel morphological form comprising rubber fibers or rubber sheets and mixtures thereof.Type: GrantFiled: December 29, 1975Date of Patent: June 27, 1978Assignee: Monsanto CompanyInventor: Robert L. Kruse
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Patent number: 4097555Abstract: The polymeric polyblend comprises a matrix terpolymer of alkenyl aromatic, alkenyl nitrile and acrylate monomers blended with a grafted block copolymer rubber as dispersed rubber particles, said particles being grafted with and having occluded terpolymer of substantially the same composition of said matrix phase. The polyblend is a product of a mass polymerization process having superior toughness and transparency.Type: GrantFiled: May 11, 1976Date of Patent: June 27, 1978Assignee: Monsanto CompanyInventor: James R. Moran
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Patent number: 4090999Abstract: This invention relates to a process in which solutions containing from 68 to 70% concentration of formaldehyde are prepared and directly reacted with urea to form urea-formaldehyde adhesives with a solids content of, for example, 65%, without any need for the adhesives or resins obtained to have to be subjected to a final distillation stage.Type: GrantFiled: May 3, 1976Date of Patent: May 23, 1978Inventor: Pedro Mir Puig
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Patent number: 4083896Abstract: The polyblend comprises: (A) a graft copolymer having superstrate copolymers of monovinylidene aromatic and ethylenically unsaturated nitrile monomers and a substrate of a diene rubber dispersed in a matrix phase (B) comprising a blend of about 45 to 75 percent by weight of a (I) copolymer of monovinylidene aromatic and ethylenically unsaturated nitrile monomers and about 25 to 55 percent by weight (II) a methylmethacrylate polymer.Type: GrantFiled: July 22, 1976Date of Patent: April 11, 1978Assignee: Monsanto CompanyInventors: James R. Moran, Paul J. Drenzek
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Patent number: 4082714Abstract: Process for the production of latices of conjugated diene polymers and conjugated diene copolymers with vinyl compounds by emulsion polymerization comprising(a) a first polymerization stage in the presence of the monomer as a phase separate from the polymer being formed,(b) an intermediate stage in which the monomer is added in quantities such that the conversion of the monomer at the end of each individual addition exceeds 45%, and(c) a final stage in which the reaction is carried to completion.Type: GrantFiled: November 25, 1975Date of Patent: April 4, 1978Assignee: Societa' Italiana Resine S.I.R. S.p.A.Inventors: Enzo Lo Scalzo, Franco Ferre, Gianfranco Cantoni
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Patent number: 4081495Abstract: The invention relates to a thermoplastic moulding composition comprising an aromatic high-molecular weight polycarbonate based on a diphenol, with a weight-average molecular weight (M.sub.w) of at least 10,000 and from 0.5 to 5% by weight, relative to the high molecular weight polycarbonate, of a polycarbonate which has an M.sub.w of from 1,200 to 9,000 and which corresponds to the formula (I): ##STR1## wherein "E" represents a radical of the formula (II): ##STR2## in which THE GROUPS R' are identical and denote H or halogenx is an integer of from 7 to 24"Z" is a divalent aromatic radical, and"n", the degree of polymerization, results from the M.sub.w between 1,200 and 9,000.Type: GrantFiled: July 30, 1976Date of Patent: March 28, 1978Assignee: Bayer AktiengesellschaftInventors: Dieter Freitag, Werner Nouvertne, Frank Kleiner
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Patent number: 4081426Abstract: Aminoplast preparation is greatly speeded by condensing an aminotriazine such as melamine with formaldehyde and etherifying alkanol under superatmospheric pressure and at a temperature between about 80.degree. and about 130.degree. C.Type: GrantFiled: April 15, 1976Date of Patent: March 28, 1978Assignee: Cassella Farbwerke Mainkur AktiengesellschaftInventors: Walter Michel, Hans Honel, Manfred Schon
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Patent number: 4081494Abstract: In a process for preparing soft polyesters which comprises reacting (A) terephthalic acid and/or its ester-forming derivative, (B) tetramethylene glycol and/or its ester-forming derivative and (C) a poly(oxyalkylene) glycol having a molecular weight of 500 to 5,000 and a ratio of the number of carbon atoms to that of oxygen atoms of 2 to 4.5, the improvement wherein after the reduced viscosity of the reaction product of the components (A), (B) and (C) has reached 0.1 (dl/g), the reaction product is further reacted with (D) a low-molecular-weight ester compound and/or a high-molecular-weight ester compound containing a terephthalic acid residue and an ethylene glycol residue or a low-molecular-weight ester compound and/or a high-molecular-weight ester compound containing a terephthalic acid residue and a 1,4-cyclohexane dimethanol residue to form a polyester-polyether block copolymer.Type: GrantFiled: December 15, 1975Date of Patent: March 28, 1978Assignee: Teijin LimitedInventors: Hiroshi Sakai, Yoshihiko Takeuchi, Shizuka Kurisu
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Patent number: 4080404Abstract: Disclosed herein are polyblend molding compositions which comprise (A) poly(styrene/acrylonitrile/methylmethacrylate) matrix polymer; (B) polychloroprene rubber which is grafted with monomers of the type used to prepare the matrix; (C) a metal oxide; and (D) smoke suppressants. Specimens molded from these polyblends have a UL-94 rating of at least V-1 and a smoke level of less than 360 D.sub.m Flaming as measured using the NBS smoke test.Type: GrantFiled: April 12, 1976Date of Patent: March 21, 1978Assignee: Monsanto CompanyInventor: Gary L. Deets