| 摘要 |
The present invention comprises block copolymers of alkylene oxides, such as ethylene oxide and propylene oxide, which are further formulated with a film-forming polymer such as poly(N-vinylpyrrolidinone), poly (vinyl alcohol), and optionally low foam additives. These polymers are useful for the coating of alumina powders for use in ceramics. In aqueous media, their lower viscosities enable facile spray drying of the coated alumina powders. A method is also disclosed for binding ceramic powders for firing, which includes incorporating as binder a block copolymer of ethylene oxide and propylene oxide. |
