Patents Assigned to LANXESS ELASTOMEROS DO BRASIL S.A.
  • Process for the preparation of a 1,3-butadiene and styrene copolymer containing a random section in its main chain followed by a block with a structure differentiated from the main chain, homopolymeric or copolymeric, functionalized and the product obtained from this
    Patent number: 9023924
    Abstract: This invention refers to a process for the preparation of a 1,3-butadiene and styrene copolymer, containing a random section in its main chain, followed by a block with a structure differentiated from the main chain, homopolymeric or copolymeric, functionalized, and the product obtained from this.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: May 5, 2015
    Assignee: Lanxess Elastomeros do Brasil S.A.
    Inventors: Luiz Fernando Nicolini, Clovis Henriques de Lira, Carlos Roberto de Albuquerque Campos, Fernando Vasconcelos Figueiredo, Mauro Cresta de Barros Dolinsky, Neusa Maria Toccheto Pires, Monica de Almeida de Sant'Anna
  • Styrene-butadiene copolymers, process for the preparation thereof and high cohesion adhesive compositions
    Patent number: 8623972
    Abstract: The present invention relates to styrene-butadiene copolymers (SBR) that are prepared using aqueous emulsion polymerization technology and are intended for the adhesive and sealing industry, being particularly useful in the preparation of contact adhesives and pressure-sensitive adhesives (PSA) and widely applicable in the footwear and furniture industries. The use of this kind of elastomer in processes for preparing adhesives, having an aqueous or solvent base, provides high cohesion to adhesive compositions without compromising or jeopardizing the adhesion. The present invention is also intended to protect the process for obtaining SBR copolymers, simultaneously comprising: aqueous emulsion polymerization at high temperatures, the use of a specific surfactant and the maintenance of the Mooney viscosity and the combined styrene content in the copolymer in high ranges.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: January 7, 2014
    Assignee: Lanxess Elastomeros Do Brasil S.A.
    Inventors: Marcus Tadeu Moura Moutinho, Manoel Remigio dos Santos, Rinaldo Farias Luz, Humberto Rocha Lovisi, Mauro Eduardo Costa Braz Pinto
  • Process for the Preparation of a 1,3-Butadiene and Styrene Copolymer Containing a Random Section in its Main Chain Followed by a Block with a Structure Differentiated from the Main Chain, Hompolymeric or Copolymeric, Functionalized and the Product Obtained From This
    Publication number: 20130237666
    Abstract: This invention refers to a process for the preparation of a 1,3-butadiene and styrene copolymer, containing a random section in its main chain, followed by a block with a structure differentiated from the main chain, homopolymeric or copolymeric, functionalized, and the product obtained from this.
    Type: Application
    Filed: April 23, 2013
    Publication date: September 12, 2013
    Applicant: LANXESS Elastomeros do Brasil S.A.
    Inventors: Luiz Fernando Nicolini, Clovis Henriques de Lira, Carlos Roberto de Albuquerque Campos, Fernando Vasconcelos Figueiredo, Mauro Cresta de Barros Dolinsky, Neusa Maria Toccheto Pires, Monica de Almeida de Sant'Anna
  • STYRENE-BUTADIENE COPOLYMERS, PROCESS FOR THE PREPARATION THEREOF AND HIGH COHESION ADHESIVE COMPOSITIONS
    Publication number: 20120129975
    Abstract: The present invention relates to styrene-butadiene copolymers (SBR) that are prepared using aqueous emulsion polymerization technology and are intended for the adhesive and sealing industry, being particularly useful in the preparation of contact adhesives and pressure-sensitive adhesives (PSA) and widely applicable in the footwear and furniture industries. The use of this kind of elastomer in processes for preparing adhesives, having an aqueous or solvent base, provides high cohesion to adhesive compositions without compromising or jeopardizing the adhesion. The present invention is also intended to protect the process for obtaining SBR copolymers, simultaneously comprising: aqueous emulsion polymerization at high temperatures, the use of a specific surfactant and the maintenance of the Mooney viscosity and the combined styrene content in the copolymer in high ranges.
    Type: Application
    Filed: January 27, 2012
    Publication date: May 24, 2012
    Applicant: LANXESS ELASTOMEROS DO BRASIL S.A.
    Inventors: Marcus Tadeu Moura MOUTINHO, Manoel Remigio DOS SANTOS, Rinaldo Farias LUZ, Humberto Rocha LOVISI, Mauro Eduardo Costa Braz PINTO