Branched poly(arylene sulfide) resin and method for producing same
US9255350B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2011 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Jun 1, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249921
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are a branched poly(arylene sulfide) resin having a melt viscosity measured at a temperature of 310° C. and a shear rate of 1200 sec−1 of 65 to 450 Pa·s, a maximum draft ratio of 6500 or more, and a degree of whiteness of 65 or more; moreover, a branched poly(arylene sulfide) resin preferably having a dependence of melt viscosity on shear rate of 1.4 to 2.6 or a melt stability of 0.85 to 1.30; and a method for producing a branched poly(arylene sulfide) resin, wherein a sulfur source and a dihaloaromatic compound are caused to undergo a polymerization reaction at a temperature of 170 to 290° C. in the organic amide solvent in the presence of a polyhaloaromatic compound in an amount of 0.0001 to 0.01 mol per mol of the fed sulfur source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.