摘要:
PROBLEM TO BE SOLVED: To obtain a colorant which has a bright color tone and an improved ultraviolet light resistance by causing fine porous ceramic particles having a specified average particle size to adsorb a dye to reduce the contact surface of the dye with the open air. SOLUTION: Fine porous ceramic particles having an average particle size of 80nm or lower, pref. 50nm or lower, and a void content of 20% or higher are obtd. pref. by dissoving an alkoxide of at least one metal selected from among Si, Kg, Ca, Ba, Zn, etc., in an org. solvent, adding water and a small amt. of an acid or alkali as a catalyst to hydrolyze the alkoxide, and drying the resultant metal oxide sol. The particles are put into water or an alcohol contg. a dye dissolved or dispersed therein in an amt. of 0.1-50wt.% of the particles, stirred at from room temp. to 40 deg.C for 0.5-30hr to cause the particles to adsorb the dye completely, filtered, and dried at 50-150 deg.C, thus giving a colorant comprising the fine particles and the dye adsorbed thereby.
摘要:
PROBLEM TO BE SOLVED: To provide an adhesive composition having at least one among the following improved characteristics as compared with the adhesive without having polymer nano-particles: in a wet composition, an improved rheology and wet film uniformity (i.e., green strength) characteristics, and in a dry composition, an improved relative adhesion, a peel build characteristic, a resistance to plasticizer and solvent migration, a gas-blocking characteristic and a characteristics of an improved rheology against a low temperature treatment, etc. SOLUTION: This adhesive material containing at least one substrate and at least one adhesive composition, the adhesive composition contains 80-100 wt. % polymer nano-particles having 1-50 nm mean particle diameter based on the total weight of all polymer components, and the polymer nano-particles contains at least one kind of a poly-ethylenically unsaturated monomer as a polymerization unit. COPYRIGHT: (C)2004,JPO