Patent ID: 8946365
Filing Date: 2015-02-03
Classification: B60C,C08F,C08L,C09J

Abstract:
1. A process for producing a polystyrene homopolymer resin, said process comprising: (a) combining at least a solid acid catalyst, an inert solvent, and styrene to thereby form a reaction mixture; and (b) polymerizing at least a portion of said styrene in said reaction mixture to thereby produce said polystyrene homopolymer resin having a Ring & Ball softening point of at least 85° C. and not more than 110° C., a z-average molecular weight (Mz) from about 500 dalton to about 3,000 dalton, and a polydispersity index from about 1.1 to not more than 1.7, wherein said inert solvent has an aromatic hydrogen content of not more than 10 percent, as measured by proton NMR; and wherein said polystyrene homopolymer resin comprises styrenic moieties having not more than 5 weight percent of end-group moieties other than styrenic moieties.