Process of making photosensitive aqueous developable ceramic coating composition including freeze drying the ceramic solid particles
US4925771A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1989 |
| Grant date | May 15, 1990 |
| Priority date | — |
| Expiry date | Nov 3, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/136
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A photosensitive ceramic coating composition which is fireable in a substantially nonoxidizing atmosphere comprising an admixture of: PA1 (a) finely divided particles of ceramic solids having a surface area-to-weight ratio of no more than 10 m.sup.2 /g and at least 80 wt. % of the particles having a size of 1-10 .mu.m, and PA1 (b) finely divided particles of an inorganic binder having a glass transition temperature in the range from the 550.degree. to 825.degree. C., a surface area-to-weight ratio of no more than 10 m.sup.2 /g and at least 90 wt. % of the particles having a size of 1-10 .mu.m, the weight ratio of (b) to (a) being in a range from 0.6 to 2, dispersed in an organic medium comprising PA1 (c) an organic polymeric binder, and PA1 (d) a photoinitiation system, dissolved in PA1 (e) photohardenable monomer, and PA1 (f) an organic medium wherein the improvement comprises an organic polymeric binder containing a copolymer or interpolymer of a C.sub.1 -C.sub.10 alkyl acrylate, C.sub.1 -C.sub.10 methacrylate, styrene, substituted styrene or combinations thereof and an ethylenically unsaturated carboxylic acid, wherein a moiety in the binder derived from the unsaturated carboxyl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.