Back to results
US 4,732,967 AGranted
Polyarylene sulphide having high melt viscosity
AssigneeBayer Aktiengesellschaft
InventorsKarsten Idel, Edgar Ostlinning, Dieter Freitag, Wolfgang Alewelt
Life of this patent
Estimating the term…
Abstract
This invention relates to optionally branched polyarylene sulphides and a process for the production thereof in a polar solvent, from 0.2 to 100 mole %, based on the aromatic dihalogen compounds, of an amino acid being added to the reaction mixture.
Claims2
Polyarylene-sulphide with a melt viscosity .eta..sub.m 20 to 500,000 Pascal-seconds and an average weight relative molecular weight M.sub.w (rel) from 25,000 to 500,000 wherein
- 1 g.eta..sub.m =3.48.1 gM.sub.w (rel)-14.25.+-.0.1.
Dependencies are inferred from the claim text.