Abstract:
A method for bonding two objects by means of the following two adhesives:(A) a moisture-inducible room temperature anion polymerization curing adhesive composed essentially of at least one anion polymerizable compound selected from the group consisting of an .alpha.-cyanoacrylate compound of the formula: ##STR1## wherein R is an alkyl group having from 1 to 16 carbon atoms, an alkoxyalkyl group having 2 to 16 carbon atoms, a haloalkyl group having from 1 to 16 carbon atoms, a cyanoalkyl group having from 2 to 16 carbon atoms, an aralkyl group having from 6 to 12 atoms, an acyloxyalkyl group having from 2 to 16 carbon atoms, a cycloalkyl group having from 3 to 16 carbon atoms, an alkenyl group having from 2 to 16 carbon atoms or an aryl group having from 6 to 12 carbon atoms, and a 1,1-disubstituted diene compound of the formula: ##STR2## wherein each of R.sup.1 and R.sup.2 which may be the same or different, is a hydrogen atom, an alkyl group having from 1 to 5 carbon atoms, an aryl group, an aralkyl group having from 6 to 12 carbon atoms or a halogen atom, R.sup.3 is a hydrogen atom or a methyl group, each of X and Y which may be the same or different, is a cyano group, a carboxylic acid ester group having from 2 to 12 carbon atoms, an ethylsulfone group, a phenylsulfone group, a formyl group, an acetyl group, a benzoyl group, an amide group, a diethyl sulfonyl group, or a phenyl group; and(B) a room temperature self-curing adhesive containing from 0.05 to 50% by weight of an anion polymerization accelerator, said self-curing adhesive being selected from the group consisting of (1) a room temperature moisture-curing adhesive, (2) a room temperature curing two-part type epoxy resin adhesive, and (3) a room temperature curing synthetic resin aqueous emulsion adhesive, which comprises applying said two adhesives (A) and (B) at the bonding interface of the objects so that they do not contact each other and pressing the objects to each other to bring the two adhesives in contact with each other.
Abstract:
An LCD panel display circuit for AC-driving a LCD panel with using a plurality of bias voltages has a display data interrupting circuit and an operation mode switching circuit, and the liquid crystal display panel includes a plurality of display cells having a plurality of X and Y electrodes arranged in a matrix form. The display data interrupting circuit interrupts the display data transmitted to the X and Y electrodes of the LCD panel in the operation mode thereof in which all of the display cells are in an inactive state. The operation mode switching circuit generates a control signal for allowing the same voltage to be applied to all of the X and Y electrodes of the LCD panel.
Abstract:
A fire-resistant and light-weight construction board is prepared by treating fly ash and/or paper sludge incineration ash to a swelling treatment with a mineral acid and shaping and hardening the resultant mixture.
Abstract:
A heat printing sheet having a pattern of a hot melt ink composition on a base, the improvement comprising using a hot melt ink composition which comprises 5-60 wt. parts of a base polymer of ethylene-vinyl acetate copolymer having 5-50 wt. % of the vinyl acetate content and 4-1000 g/10 min. of a melt index or a mixture of said ethylene-vinyl acetate substituted with 10-60 wt. % of the other polymer; and 20-80 wt. parts of a tackifier selected from terpene resins, hydrogenated dicyclopentadiene resins, lower styrene resins, rosins, rosin polyol esters, hydrogenated rosin and rosin polyol esters and alicyclic hydrocarbon resins and 0.1-30 wt. parts of a pigment or dye, and the hot melt ink composition is melted at 80.degree.-250.degree. C and is coated on an engraved roll and is instantaneously printed on a base of synthetic polymer film having 10-100 of a thickness and smooth surface under 0.5-10 Kg/cm.sup.2 (gauge) to form the pattern of the hot melt ink composition having 10-3000 of a thickness.