Method of treating the surface of a molded article comprising liquid crystal polyester resin
US4950360A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1988 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Sep 27, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/381
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Three dimensional molded articles comprising liquid crystalline polyesters are recognized to be extremely difficult to finish such as by printing, painting, metallizing, plating, etc. An effective answer to this difficulty is provided by initially blending within the liquid crystalline polyester at least one particulate inorganic filler selected from the group consisting of Group II elements of the periodic table and oxides, sulfates, phosphates, silicates, and carbonates thereof, and elements of aluminum, silicon, tin, lead, antimony, and bismuth and oxides thereof, in an amount of 5 to 80 percent by weight; forming a molded article from the same; and contacting the resulting molded article with an acidic solution containing at least 80 percent by weight of sulfuric acid. The requisite surface modification for finishing to form a quality product is made possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.