Braskem S.a.

Manoela Ellwanger Cangussu

Adriane Gomes Simanke

Hadi Mohammadi

Ashley Hanlon

Markus Busch

Sascha Hintenlang

Nei Sebastião Domingues Junior

Mauro Alfredo Soto Oviedo

Jonas Alves Fernandes

Kevin Herrington

Jorge Manuel Jardim Da Silva

Nei Sebastiao Domingues, Jr

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

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

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.

Growing community of inventors

São Paulo, Brazil

Manoela Ellwanger Cangussu