Method of preventing corrosion of apparatus for melt-processing polyarylene thioethers
US4746698A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1986 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | Nov 5, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/098
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Corrosion of a melt-processing apparatus for processing a polyarylene thioether at a temperature higher than the melting point thereof is prevented by a method which comprises adding to 100 parts by weight of the polyarylene thioether 0.001 to 10 parts by weight of at least one member selected from the group consisting of (i) hydroxides of metals of the group IIa of the Periodic Table, (ii) oxides of metals of the group IIa of the Periodic Table and (iii) aromatic carboxylic acid salts of metals of the group IIa of the Periodic Table. By this method, even if the melt-processing article obtained is exposed to moisture, the electrical properties of the article formed (for example, insulation characteristics) and the water resistance are not substantially deteriorated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.