Braskem S.a.

Adriane Gomes Simanke

Manoela Ellwanger Cangussu

Hadi Mohammadi

Markus Busch

Ashley Hanlon

Sascha Hintenlang

Mariele Kaipers Stocker

Nei Sebastião Domingues Junior

Marcia Pires Fortes Ferreira

Cristóvão De Lemos

Marcia Silva Lacerda Miranda

Rodrigo Brambilla

Mauro Alfredo Soto Oviedo

Jonas Alves Fernandes

Kevin Herrington

Jorge Manuel Jardim Da Silva

Nei Sebastiao Domingues, Jr

Daiane Schilling De Vargas

Arthur Alaim Bernardes

Nei Sebastiao Domingues Junior

A method of controlling long chain branching in an ethylene-based polymer includes polymerizing ethylene with one or more optional monomers to form an ethylene-based polymer, and controlling a degree of long chain branching (LCB) in the ethylene-based polymer. The degree of LCB ranges from 0.1 per 1000 carbon atoms in the polymer backbone to 10 per 1000 carbon atoms in the polymer backbone, as measured byCNMR. The degree of LCB is controlled by adding one or more branched vinyl ester to the polymerizing step in an amount ranging from 0.01 mol % to 5.0 mol %, relative to total monomer content. A polymer composition contains the ethylene-based polymer. An article includes the polymer composition containing the ethylene-based polymer.

Method of controlling polyethylene architecture

Methods may include modifying the crystallization properties of a polymer composition including a polyolefin and a nucleating agent with the structure:

Nucleated polyolefin compositions and methods and uses thereof

A polymer composition may include a polymer produced from ethylene, one or more branched vinyl ester monomers, and optionally, vinyl acetate; wherein the polymer has a number average molecular weight ranging from 5 to 10,000 kDa, and a molecular weight distribution ranging from 1 to 60, obtained by GPC.

Polyethylene copolymers and products and methods thereof

Methods may include modifying the crystallization properties of a polymer composition including a polyolefin and a nucleating agent with the structure: wherein R1 and R2 are independently selected from hydrogen, alkyl, alkenyl, or aryl, wherein the alkyl, alkenyl, or aryl may be substituted with one or more carboxylate groups and M is a metal selected from Group I of the Periodic Table; or wherein R1 and R2 are independently hydrogen, alkyl, alkenyl, or aryl with the proviso that at least one of R1 or R2 is a carbon chain having 1 to 12 carbons with at least one of the carbons in the carbon chain covalently bound to the polyolefin, and wherein the alkyl, alkenyl, or aryl may be substituted with one or more carboxylate groups; and M is a metal selected from Group I of the Periodic Table.

A polymer composition may include a polymer produced from ethylene, and one or more vinyl carbonyl monomers having the general structure (I): where R, Rand Rare independently selected from a group consisting of hydrogen, halogen, hydroxyl, alkyl, substituted alkyl, alkoxy, substituted alkoxy, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, aralkyl, (heterocyclo)alkyl, (heteroaryl)alkyl, (amino)alkyl, (alkylamino)alkyl, (dialkylamino)alkyl, carboxamino(alkyl), (cyano)alkyl, alkoxyalkyl, hydroxyalkyl, heteroalkyl, substituted cycloalkyl, substituted cycloalkoxy, substituted aryl, and substituted heterocycles; and Y and Z are independently selected from a group consisting of O, (CRR), (CHR)&#x2014;R, phenylene, CH&#x2014;OR, and NR, wherein R, R, R, R, and Rare independently selected from a group consisting of hydrogen, halogen, CH, and alkyl, and wherein Ris independently selected from a group consisting of hydrogen; halogen; hydroxyl; alkyl; linear ether; cyclic ether; Si(R), wherein Ris independently selected from a group consisting of hydrogen, halogen, and alkyl; and (C&#x2550;O)&#x2014;R, wherein Ris an alkyl; and Ris independently selected from a group consisting of halogen, hydroxyl, alkyl, substituted alkyl, alkoxy, substituted alkoxy, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, aralkyl, (heterocyclo)alkyl, (heteroaryl)alkyl, (amino)alkyl, (alkylamino)alkyl, (dialkylamino)alkyl, carboxamino(alkyl), (cyano)alkyl, alkoxyalkyl, hydroxyalkyl, heteroalkyl, substituted cycloalkyl, substituted cycloalkoxy, substituted aryl, and substituted heterocycles, where the polymer composition has a number average molecular weight (M) ranging from 5 kDa to 10000 kDa obtained by GPC.

A polymer composition may include a plurality of ethylene-based polymers forming a multimodal composition distribution, each having a distinct crystallization peak in a CEF curve. A process of making a polymer composition may include melt blending a plurality of polyethylenes with different microstructural characteristics in the molten state. Another process of making a polymer composition may include polymerizing ethylene and an optional alpha olefin in combination with a plurality of metallocene catalysts in a polymerization reactor to form a plurality of ethylene based polymers. Yet another process of making a polymer composition may include polymerizing ethylene and an optional alpha olefin in combination with a multimetal catalyst in a polymerization process to form a plurality of ethylene based polymers.

Ethylene alpha-olefin copolymers with multimodal comonomer distributions and processes for obtaining the same

Growing community of inventors

São Paulo, Brazil

Adriane Gomes Simanke