Patents by Inventor Kirit GEVARIA
Kirit GEVARIA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20230203293Abstract: The invention relates to a thermoplastic molding composition comprising 5.0 to 57 wt.-% ABS graft copolymer (A); 30.5 to 80 wt.-% SAN copolymer (B) 1.5 to 9.5 wt.-% copolymer (C) with epoxy, maleic anhydride or maleic imide functions; 5 to 29 wt.-% of hollow glass microspheres (D); 6 to 12 wt.-% of glass fibers (E); 0 to 5 wt.-% additives and/or processing aids (F), having a low density and high strength, and a process for its preparation, shaped arti-cles thereof, and its use in the electronics sector.Type: ApplicationFiled: May 25, 2021Publication date: June 29, 2023Inventors: Norbert NIESSNER, Shridhar MADHAV, Kirit GEVARIA, Manjula AK, Pratik BHAVSAR
-
Patent number: 11655359Abstract: The invention relates to a polymer composition (P), comprising at least one acrylonitrile-butadiene-styrene copolymer (A) (ABS copolymer (A)), characterized in that the polymer composition (P) has a surface energy of >38 dyne/cm. The invention further relates to a process for painting a surface of a polymer moulded article comprising the polymer composition (P), wherein no pre-treatment of the surface of the polymer moulded article, such as primer coating, is required prior to the application of the paint.Type: GrantFiled: January 31, 2018Date of Patent: May 23, 2023Assignee: INEOS STYROLUTION GROUP GMBHInventors: Norbert Niessner, Gisbert Michels, Shridhar Madhav, Kirit Gevaria, Kashyap Raval
-
Patent number: 11603464Abstract: High heat resistant ABS molding compositions for use in the automotive sector, electronics, and household or healthcare sector comprising: (A) 15 to 35 wt.-% ABS graft copolymer (A); (B) 15 to 35 wt.-% a-methylstyrene/acrylonitrile copolymer (B) (weight ratio 95:5 to 50:50); (C) 20 to 40 wt.-% styrene/acrylonitrile copolymer (C) (weight ratio 95:5 to 50:50; Mw 150,000 to 300,000); (D) 10 to 30 wt.-% random terpolymer (D) made from 13 to 27 wt.-% ?, ? ethylenically unsaturated cyclic anhydride, 60 to 74 wt.-% aromatic vinyl monomer, and 13 to 27 wt.-% maleimide monomer); (E) 0.1 to 5 wt.-%, of at least one elastomeric block copolymer (E) comprising a vinylaromatic monomer block S and an elastomeric random diene/vinylaromatic onomer block B/S; hard phase proportion is 1 to 40 vol.-% and the diene proportion is less than 50 wt.-%; and (F) 0 to 5 wt.-% of further additives and/or processing aids (F).Type: GrantFiled: February 13, 2019Date of Patent: March 14, 2023Assignee: INEOS STYROLUTION GROUP GMBHInventors: Norbert Niessner, Gisbert Michels, KwanHee Lee, Shridhar Madhav, Kirit Gevaria, Nirmalendu Debata
-
Publication number: 20230013793Abstract: An emulsion polymerization process for preparation of ABS graft copolymer latex having reduced residual monomer content, wherein a grafting step c) comprises the steps: c1): feeding of 10 to 45 wt.-% of styrene and acrylonitrile in one portion to agglomerated butadiene rubber latex and addition of redox system initiator, then polymerization; c2): feeding remaining monomers in portions or continuously and further addition of redox system initiator; c3): addition of inorganic free radical initiator and continuation of polymerization, leads to ABS graft copolymers and thermoplastic molding compositions which can be used in the automotive industry.Type: ApplicationFiled: December 16, 2020Publication date: January 19, 2023Inventors: Norbert NIESSNER, Gisbert MICHELS, Roman HONEKER, Shridhar MADHAV, Kirit GEVARIA, Pankaj BHARADWAJ, Prabhat SINGH
-
Publication number: 20220332872Abstract: A thermoplastic molding composition comprising (A) 15 to 45 wt.-% graft copolymer (A) obtained by emulsion polymerization of styrene and acrylonitrile in presence of an agglomerated butadiene rubber latex (A1) with D50 of 150 to 800 nm; (B) 40 to 75 wt.-% copolymer (B) of styrene and acrylonitrile having a weight ratio of 80:20 to 65:35 and Mw of 150,000 to 300,000 g/mol, (C) 2.0 to 5.0 wt.-% elastomeric block copolymer (C) made from 15 to 65 wt.-% diene, and 35 to 85% by weight vinylaromatic monomer; (D) 2.0 to 5.0 wt.-% titanium dioxide pigment D comprising at least 95 wt.-% titanium dioxide and 1.7 to 3.3 wt.-% alumina; and (E) 0 to 7.0 wt.-% of at least one additive/processing aid (E) different from (D); having a high chemical resistance, high color and thermal stability and low tendency to delamination. This can be used for sheet extrusion and thermoforming, in particular as inner liner for a cooling apparatus.Type: ApplicationFiled: August 20, 2020Publication date: October 20, 2022Inventors: Norbert NIESSNER, Gisbert MICHELS, Janna MICHAELIS DE VASCONCELLOS, Shridhar MADHAV, Kirit GEVARIA, Pratik BHAVSAR, SangJun AHN
-
Patent number: 11390736Abstract: ABS molding composition comprising: (a) 50 to 80 wt.-% SAN copolymer (a) (S/AN ratio 78:22 to 65:35, Mw 80,000 to 250,000); (b) 8 to 25 wt.-% graft copolymer (b) consisting of 15 to 60 wt.-% graft sheath (b2) and 40 to 85 wt.-% graft substrate—an agglomerated butadiene rubber latex—(b1), obtained by emulsion polymerization of SAN in presence of agglomerated butadiene rubber latex (b1) (D50 150 to 800 nm); and (c) 8 to 30 wt.-% SBC block copolymer (vinylarene 58 to 68 wt.-%) comprising diene/vinylarene tapered polymer blocks; exhibiting ultra-high flow melt with good mechanical properties, a process for their preparation and their use for the production of bulky and/or thin walled articles.Type: GrantFiled: April 12, 2019Date of Patent: July 19, 2022Assignee: INEOS STYROLUTION GROUP GMBHInventors: Norbert Niessner, Gisbert Michels, Thomas W. Cochran, Shridhar Madhav, Kirit Gevaria, Mukesh Modi
-
Patent number: 11352488Abstract: Thermoplastic molding composition comprising (A) 40 to 80 wt.-% SAN copolymer (S/AN-ratio 78:22 to 65:35, Mw 80,000 to 250,000 g/mol); (B) 20 to 60 wt.-% SBC block copolymer (monovinylarene 61 to 64 wt.-%) comprising conjugated diene/monovinylarene tapered polymer blocks; and (C) 0 to 5 wt.-% additives and/or processing aids (C); exhibiting ultra-high melt flow with good mechanical, thermal and optical properties, a process for its preparation and its use for the production of bulky and/or thin walled articles.Type: GrantFiled: April 12, 2019Date of Patent: June 7, 2022Assignee: INEOS STYROLUTION GROUP GMBHInventors: Norbert Niessner, Gisbert Michels, Thomas W. Cochran, Shridhar Madhav, Kirit Gevaria, Mukesh Modi
-
Publication number: 20210355310Abstract: A heat resistant ABS thermoplastic molding composition with reduced odor can be employed for automotive interior applications if it comprises a graft copolymer (A) based on a diene rubber latex substrate with a SAN graft sheath; a SAN matrix polymer (B) and specific amounts of additives such as fatty acid amides or fatty acid esters,metal oxides such as MgO, CaO or ZnO, antioxidants and a silicon oil having a kinematic viscosity in the range of from 25000 to 80000 centi Stokes.Type: ApplicationFiled: September 23, 2019Publication date: November 18, 2021Inventors: Norbert NIESSNER, Gisbert MICHELS, Frank EISENTRAEGER, Shridhar MADHAV, Kirit GEVARIA, Pratik BHAVSAR, KwanHee LEE
-
Publication number: 20210139698Abstract: High heat resistant impact modified polycarbonate blend for use in the industrial, household and automotive sector comprising (A) 10 to 40 wt.-% ABS graft copolymer; (B) 25 to 50 wt.-% aromatic polycarbonate; (C) 20 to 40 wt.-% omethylstyrene/acrylonitrile copolymer; (D) 10 to 25 wt.-% terpolymer of vinylaromatic monomer, a, 13 ethylenically unsaturated dicarboxylic cyclic anhydride, and Ci-C3-alkyl-(meth)acrylate; and (E) 0.3 to 5 wt.-% further additives and/or processing aids.Type: ApplicationFiled: June 11, 2019Publication date: May 13, 2021Inventors: Norbert NIESSNER, Gisbert MICHELS, Frank EISENTRAEGER, HanBok SONG, Shridhar MADHAV, Kirit GEVARIA, Pankaj BHARADWAJ
-
Publication number: 20210115244Abstract: ABS thermoplastic molding compositions for the preparation of blow molded articles in the automotive and household sector comprising (A) 30 to 40 wt.-% ABS graft rubber copolymer, (B) 25 to 35 wt.-% alpha-methylstyrene/acrylonitrile copolymer, (C) 30 to 40 wt.-% styrene/acrylonitrile copolymer, (D) 0.05 to 0.50 wt.-% homo- or copolymer comprising monomer structure units with a C3-C6-alkyleneoxide side chain having an epoxy terminal group or with a modified, functionalized C3-C6-alkyleneoxide side chain, and (E) 0 to 5 wt.-% further additives. Component (D) is preferably polyglycidylmethacrylate.Type: ApplicationFiled: December 18, 2018Publication date: April 22, 2021Inventors: Norbert NIESSNER, Gisbert MICHELS, Nils WITTENBERG, SangJun AHN, Shridhar MADHAV, Kirit GEVARIA, Pratik BHAVSAR
-
Publication number: 20210108061Abstract: Thermoplastic molding composition comprising (A) 40 to 80 wt.-% SAN copolymer (S/AN-ratio 78:22 to 65:35, Mw 80,000 to 250,000 g/mol); (B) 20 to 60 wt.-% SBC block copolymer (monovinylarene 61 to 64 wt.-%) comprising conjugated diene/monovinylarene tapered polymer blocks; and (C) 0 to 5 wt.-% additives and/or processing aids (C); exhibiting ultra-high melt flow with good mechanical, thermal and optical properties, a process for its preparation and its use for the production of bulky and/or thin walled articles.Type: ApplicationFiled: April 12, 2019Publication date: April 15, 2021Inventors: Norbert NIESSNER, Gisbert MICHELS, Thomas W. COCHRAN, Shridhar MADHAV, Kirit GEVARIA, Mukesh MODI
-
Publication number: 20210108062Abstract: ABS molding composition comprising: (a) 50 to 80 wt.-% SAN copolymer (a) (S/AN ratio 78:22 to 65:35, Mw 80,000 to 250,000); (b) 8 to 25 wt.-% graft copolymer (b) consisting of 15 to 60 wt.-% graft sheath (b2) and 40 to 85 wt.-% graft substrate—an agglomerated butadiene rubber latex—(b1), obtained by emulsion polymerization of SAN in presence of agglomerated butadiene rubber latex (b1) (D50 150 to 800 nm); and (c) 8 to 30 wt.-% SBC block copolymer (vinylarene 58 to 68 wt.-%) comprising diene/vinylarene tapered polymer blocks; exhibiting ultra-high flow melt with good mechanical properties, a process for their preparation and their use for the production of bulky and/or thin walled articles.Type: ApplicationFiled: April 12, 2019Publication date: April 15, 2021Inventors: Norbert NIESSNER, Gisbert MICHELS, Thomas W. COCHRAN, Shridhar MADHAV, Kirit GEVARIA, Mukesh MODI
-
Publication number: 20210108069Abstract: High heat resistant ABS molding compositions for use in the automotive sector, electronics, and household or healthcare sector comprising: (A) 15 to 35 wt.-% ABS graft copolymer (A); (B) 15 to 35 wt.-% a-methylstyrene/acrylonitrile copolymer (B) (weight ratio 95:5 to 50:50); (C) 20 to 40 wt.-% styrene/acrylonitrile copolymer (C) (weight ratio 95:5 to 50:50; Mw 150,000 to 300,000); (D) 10 to 30 wt.-% random terpolymer (D) made from 13 to 27 wt.-% ?, ? ethylenically unsaturated cyclic anhydride, 60 to 74 wt.-% aromatic vinyl monomer, and 13 to 27 wt.-% maleimide monomer); (E) 0.1 to 5 wt.-%, of at least one elastomeric block copolymer (E) comprising a vinylaromatic monomer block S and an elastomeric random diene/vinylaromatic onomer block B/S; hard phase proportion is 1 to 40 vol.-% and the diene proportion is less than 50 wt.-%; and (F) 0 to 5 wt.-% of further additives and/or processing aids (F).Type: ApplicationFiled: February 13, 2019Publication date: April 15, 2021Inventors: Norbert NIESSNER, Gisbert MICHELS, KwanHee LEE, Shridhar MADHAV, Kirit GEVARIA, Nirmalendu DEBATA
-
Publication number: 20210087385Abstract: Thermoplastic molding composition—having an improved fatigue resistance, balanced mechanical properties and a high ductility for applications demanding high endurance under cyclic loading conditions—comprising 25 to 45 wt.-% ABS graft copolymer (A), consisting of 50.5 to 55 wt.-% of a graft sheath (AN content 30.5 to 34 wt.-%) (A2) and 45 to 49.5 wt.-% of a graft substrate (A1), and 55 to 75 wt.-% SAN copolymer (B) (AN content (30 to 33 wt.-%, melt flow rate 30 to 36 g/10 min (220° C./10 kg)).Type: ApplicationFiled: December 18, 2018Publication date: March 25, 2021Inventors: Norbert NIESSNER, Gisbert MICHELS, Nils WITTENBERG, Shridhar MADHAV, Nirmalendu DEBATA, Kirit GEVARIA
-
Publication number: 20200095412Abstract: The invention relates to a polymer composition (P), comprising at least one acrylonitrile-butadiene-styrene copolymer (A) (ABS copolymer (A)), characterized in that the polymer composition (P) has a surface energy of >38 dyne/cm. The invention further relates to a process for painting a surface of a polymer moulded article comprising the polymer composition (P), wherein no pre-treatment of the surface of the polymer moulded article, such as primer coating, is required prior to the application of the paint.Type: ApplicationFiled: January 31, 2018Publication date: March 26, 2020Inventors: Norbert NIESSNER, Gisbert MICHELS, Shridhar MADHAV, Kirit GEVARIA, Kashyap RAVAL