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:
Jan. 25, 2011
Filed:
Apr. 11, 2006
Michael J. Hanner, Marietta, OH (US);
Chen-youn Sue, Williamstown, WV (US);
Clifford C. Pettey, Fleming, OH (US);
Carleton Stouffer, Bartlesville, OK (US);
Paul M. Hunt, Belpre, OH (US);
Ken E. Bowen, Belpre, OH (US);
Michael J. Hanner, Marietta, OH (US);
Chen-Youn Sue, Williamstown, WV (US);
Clifford C. Pettey, Fleming, OH (US);
Carleton Stouffer, Bartlesville, OK (US);
Paul M. Hunt, Belpre, OH (US);
Ken E. Bowen, Belpre, OH (US);
Chevron Phillips Cheimcal Company, LP, The Woodlands, TX (US);
Abstract
Compositions, processes, and methods are provided relating to styrenic polymers, including high impact polystyrene (HIPS), also referred to as rubber-modified polystyrene. In one aspect, a process is provided for making high impact polystyrenes, comprising the steps of combining a monovinylarene component, a monovinylarene-conjugated diene block copolymer, and a conjugated diene polymer. In another aspect, the feed components form an emulsion having a continuous phase and a dispersed phase. The continuous phase comprises at least a portion of the monovinylarene component and at least a portion of the conjugated diene polymer. The dispersed phase is suspended within the continuous phase, and comprises globules having at least a portion of the monovinylarene-conjugated diene block copolymer, a remaining portion of the monovinylarene component, and a remaining portion of the conjugated diene polymer. The monovinylarene component is polymerized in the presence of the emulsion alone or in the presence of other feedstocks.