Patents by Inventor Sameer Nalawade

Sameer Nalawade 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).

  • Patent number: 10253150
    Abstract: The invention relates to a process for producing expandable pelletized material which comprises polylactic acid which comprises the following steps: a) melting and incorporation by mixing of polylactic acid, one or more further polymers, a diepoxide or polyepoxide, and one or more additives, b) incorporation by mixing of an organic blowing agent into the polymer melt by means of a static or dynamic mixer at a temperature of at least 140° C., c) discharging through a die plate with holes, the diameter of which at the exit from the die is at most 1.5 mm, and d) pelletizing the melt comprising blowing agent directly downstream of the die plate, and under water, at a pressure in the range from 1 to 20 bar. The invention further relates to expandable pelletized material which comprises polylactic acid and which is obtainable by said process.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: April 9, 2019
    Assignee: BASF SE
    Inventors: Andreas Füssl, Bangaru Dharmapuri Sriramulu Sampath, Maximilian Hofmann, Ingo Bellin, Sameer Nalawade, Klaus Hahn, Andreas Künkel, Robert Loos
  • Patent number: 9212270
    Abstract: The invention relates to a process for producing expandable pelletized material which comprises polylactic acid which comprises the following steps: a) melting and incorporation by mixing of the following components: i) from 50 to 99.9% by weight, based on the total weight of components i to iii), of polylactic acid, ii) from 0 to 49.9% by weight, based on the total weight of components i to iii), of one or more further polymers, iii) from 0.1 to 2% by weight, based on the total weight of components i to iii), of a diepoxide or polyepoxide, and iv) from 0 to 10% by weight of one or more additives, b) incorporation by mixing of v) from 3 to 7% by weight, based on the total weight of components i to iv), of an organic blowing agent into the polymer melt by means of a static or dynamic mixer at a temperature of at least 140° C., c) discharging through a die plate with holes, the diameter of which at the exit from the die is at most 1.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: December 15, 2015
    Assignee: BASF SE
    Inventors: Andreas Füβl, Bangaru Sampath, Maximilian Hofmann, Ingo Bellin, Sameer Nalawade, Klaus Hahn, Andreas Künkel, Robert Loos
  • Publication number: 20150197604
    Abstract: Monomer beads which can be obtained according to a process in which i. one or more aromatic tetraamino compounds are mixed with one or more aromatic carboxylic acids comprising at least two acid groups per carboxylic acid monomer in an extruder and melted at 190° C.-270° C.; ii. the melt is dropletized at 190° C.-270° C. by means of a die located at the extruder outlet; iii. the liquid droplets are collected, cooled and allowed to solidify. The monomer beads are particularly suited to the production of a proton-conducting polymer membrane based on polyazoles.
    Type: Application
    Filed: March 25, 2015
    Publication date: July 16, 2015
    Applicant: BASF SE
    Inventors: Klaus Leitner, Sameer Nalawade
  • Patent number: 9011738
    Abstract: Monomer beads which can be obtained according to a process in which i. one or more aromatic tetraamino compounds are mixed with one or more aromatic carboxylic acids comprising at least two acid groups per carboxylic acid monomer in an extruder and melted at 190° C.-270° C.; ii. the melt is dropletized at 190° C.-270° C. by means of a die located at the extruder outlet; iii. the liquid droplets are collected, cooled and allowed to solidify. The monomer beads are particularly suited to the production of a proton-conducting polymer membrane based on polyazoles.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: April 21, 2015
    Assignee: BASF SE
    Inventors: Klaus Leitner, Sameer Nalawade
  • Publication number: 20140357764
    Abstract: The invention relates to a thermoplastic molding composition comprising: A) from 69 to 98% by weight, based on components A and B, of a thermoplastic selected from the group consisting of polyvinyl chloride, polystyrene, polymethyl methacrylate, polyamide, polybutylene terephthalate, and polyoxymethylene; B) from 2 to 31% by weight, based on components A and B, of a polymer mixture comprising: i) from 30 to 70% by weight, based on the total weight of components i to ii, of at least one polyester based on aliphatic and/or aromatic dicarboxylic acids and on an aliphatic dihydroxy compound; ii) from 70 to 30% by weight, based on the total weight of components i to ii, of polylactic acid; iii) from 0 to 10% by weight, based on the total weight of components i to iv, of a copolymer which contains epoxy groups and which is based on styrene, acrylate, and/or methacrylate; iv) from 0 to 15% by weight, based on the total weight of components i to iv, of nucleating agents, lubricants and antiblocking agents, waxes,
    Type: Application
    Filed: September 12, 2012
    Publication date: December 4, 2014
    Applicant: BASF SE
    Inventors: Sachin Jain, Sameer Nalawade
  • Publication number: 20140303311
    Abstract: The present invention relates to thermoplastic molding compositions comprising: A) from 80 to 99.5% by weight, based on components A and B, of a polyamide A; B) from 0.
    Type: Application
    Filed: September 12, 2012
    Publication date: October 9, 2014
    Applicant: BASF SE
    Inventors: Sachin Jain, Sameer Nalawade
  • Publication number: 20130320588
    Abstract: The invention relates to a process, comprising the following steps, for connecting two plastics elements to give a component, where a second plastics element is connected to a first plastics element by molding-on in a molding process or forming process: (a) inserting the first plastics element into a mold, where the first plastics element comprises at least one thermoplastic as matrix material, (b) introducing a plastics molding composition into the mold for molding the second plastics element, where the plastics molding composition comprises at least one thermoplastic having reactive groups or one mixture made of at least one thermoplastic and of a material having reactive groups which react chemically with reactive groups of the thermoplastic of the first plastics element.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 5, 2013
    Applicant: BASF SE
    Inventors: Gijsbrecht Jacobus Maria Habraken, Manoranjan Prusty, Alireza Talebloo, Tobias Pfefferkorn, Andreas Wollny, Andreas Radtke, Jörg Schnorr, Oliver Geiger, Sameer Nalawade
  • Publication number: 20130150468
    Abstract: The invention relates to a process for producing expandable pelletized material which comprises polylactic acid which comprises the following steps: a) melting and incorporation by mixing of the following components: i) from 50 to 99.9% by weight, based on the total weight of components i to iii), of polylactic acid, ii) from 0 to 49.9% by weight, based on the total weight of components i to iii), of one or more further polymers, iii) from 0.1 to 2% by weight, based on the total weight of components i to iii), of a diepoxide or polyepoxide, and iv) from 0 to 10% by weight of one or more additives, b) incorporation by mixing of v) from 3 to 7% by weight, based on the total weight of components i to iv), of an organic blowing agent into the polymer melt by means of a static or dynamic mixer at a temperature of at least 140° C., c) discharging through a die plate with holes, the diameter of which at the exit from the die is at most 1.
    Type: Application
    Filed: January 6, 2011
    Publication date: June 13, 2013
    Applicant: BASF SE
    Inventors: Andreas Füssi, Bangaru Sampath, Maximilian Hofmann, Ingo Bellin, Sameer Nalawade, Klaus Hahn, Andreas Künkel, Robert Loos
  • Publication number: 20130059141
    Abstract: The present invention relates to foam layers based on a biodegradable polyester mixture PM, comprising: i) from 5 to 49% by weight, based on the total weight of components i to ii, of at least one polypropylene carbonate; ii) from 51 to 95% by weight, based on the total weight of components i to ii, of polylactic acid; iii) from 0 to 25% by weight, based on the total weight of components i to v, of a polyester composed of an (x1) aliphatic and/or (x2) aromatic dicarboxylic acid and of an (y) aliphatic diol; iv) from 0 to 5% by weight, based on the total weight of components i to v, of a copolymer which comprises epoxy groups and which is based on styrene, acrylate, and/or methacrylate; and v) from 0 to 15% by weight, based on the total weight of components i to v, of additives.
    Type: Application
    Filed: September 4, 2012
    Publication date: March 7, 2013
    Applicant: BASF SE
    Inventors: Andreas Füßl, Jan Kurt Walter Sandler, Sameer Nalawade, Tobias Heinz Steinke, Volker Warzelhan, Andreas Künkel, Klaus Hahn, Jerome Lohmann, Anna Katharina Brym
  • Publication number: 20120029137
    Abstract: The invention relates to thermoplastic molding compositions comprising: A) from 10 to 89% by weight of a polyethylene terephthalate or polybutylene terephthalate, B) from 10 to 60% by weight of a fibrous reinforcing material with a fiber length of from 2 to 24 mm, C) from 1 to 20% by weight of at least one polyester based on aliphatic and aromatic dicarboxylic acids and on an aliphatic dihydroxy compound, D) from 0 to 40% by weight of further additives, where the entirety of components A) to D) is 100%. The invention further relates to the use of thermoplastic molding compositions for producing long-fiber-reinforced pellets and to the pellets thus obtainable. The invention further relates to the use of pellets of this type for producing moldings of any type with good notched impact resistance, and to the resultant moldings.
    Type: Application
    Filed: August 2, 2011
    Publication date: February 2, 2012
    Applicant: BASF SE
    Inventors: Sachin Jain, Sameer Nalawade, Andreas Wollny, Angelika Homes, Gerhard Leiter, Motonori Yamamoto
  • Publication number: 20120007263
    Abstract: Monomer beads which can be obtained according to a process in which i. one or more aromatic tetraamino compounds are mixed with one or more aromatic carboxylic acids comprising at least two acid groups per carboxylic acid monomer in an extruder and melted at 190° C.-270° C.; ii. the melt is dropletized at 190° C.-270° C. by means of a die located at the extruder outlet; iii. the liquid droplets are collected, cooled and allowed to solidify. The monomer beads are particularly suited to the production of a proton-conducting polymer membrane based on polyazoles.
    Type: Application
    Filed: January 14, 2010
    Publication date: January 12, 2012
    Applicant: BASF SE
    Inventors: Klaus Leitner, Sameer Nalawade
  • Publication number: 20110269891
    Abstract: The invention relates to thermoplastic molding compositions comprising A) from 10 to 89% by weight of a polyamide, B) from 10 to 60% by weight of a fibrous reinforcing material with fiber length from 3 to 24 mm, C) from 1 to 20% by weight of at least one polyolefin composed of ethylene or propylene or a mixture of these, where polar functional groups are excluded, D) from 0 to 5% by weight of at least one nanoparticulate oxide or oxide hydrate, or a mixture of these, of at least one metal or semimetal, with a number-average primary-particle diameter of from 0.5 to 50 nm, and with a hydrophobic particle surface, and E) from 0 to 40% by weight of further additives, where the entirety of components A) to E) gives 100%.
    Type: Application
    Filed: April 29, 2011
    Publication date: November 3, 2011
    Applicant: BASF SE
    Inventors: Sachin Jain, Sameer Nalawade, Andreas Wollny, Angelika Homes, Gerhard Leiter, Matthias Scheibitz