The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 20, 2012
Filed:
Sep. 21, 2009
Jean-louis Chamayou, Carry le Rouet, FR;
Daniel Marissal, Carry le Rouet, FR;
Jean-Louis Chamayou, Carry le Rouet, FR;
Daniel Marissal, Carry le Rouet, FR;
Ineos Europe Limited, Hampshire, GB;
Abstract
Process for producing a degassed polymer powder, by a) feeding i) a principal monomer, and ii) one or more comonomers in an amount of at least 5000 ppmw relative to the principal monomer feed rate, and iii) optionally an added alkane having 2 to 10 carbon atoms, fed in an amount of at least 1000 ppmw relative to the principal monomer feed rate; into a polymerization reactor. The monomer and comonomers react to form a polymer including residual hydrocarbons having one or more hydrocarbons with 3 to 10 carbon atoms, and b) passing the polymer to a degassing step where it is contacted with a purge gas to remove some of the residual hydrocarbons.