摘要:
To provide an adherence substance which has a low viscosity and good coatability, can be made solvent free, has a low adhesive strength, of which increase with time is small, has good adhesion to a substrate, has excellent adhesion to an adherend and excellent removability, and has a good wettability. An adherence substance which is obtained by curing a curable composition comprising a silyl group-containing polymer (S) obtained by introducing a hydrolyzable silyl group to a molecular terminal of a polyurethane prepolymer obtained by reacting a polyol compound with a polyisocyanate compound, and which has a peel adhesive strength of at most 8N/25 mm.
摘要:
There is provided a downsized electrical connection box in which the reliability of the mechanical connection between blocks provided in the electrical connection box is improved. The electrical connection box 1 includes a plurality of electric components, a first block 3 mounted with the electric components and a second block mounted with the electric components. The first block 3 includes a tubular-shaped first member 32, 33 projecting towards the second block 5. The second block 5 includes a second member 52, 53 arranged to be slidably inserted into the first member. The first and the second blocks 3, 5 are coupled to each other by slidably inserting the second member 52, 53 into the first member 32, 33. At least one electric component 8 of the plurality of electric components is received inside the first and the second members 32, 52, 33, 53.
摘要:
To provide an adherence substance which has a low viscosity and good coatability, can be made solvent free, has a low adhesive strength, of which increase with time is small, has good adhesion to a substrate, has excellent adhesion to an adherend and excellent removability, and has a good wettability.An adherence substance which is obtained by curing a curable composition comprising a silyl group-containing polymer (S) obtained by introducing a hydrolyzable silyl group to a molecular terminal of a polyurethane prepolymer obtained by reacting a polyol compound with a polyisocyanate compound, and which has a peel adhesive strength of at most 8N/25 mm.
摘要:
Provided is a polyurethane for printing ink binders excellent in solubility in a solvent having a low solvency, low viscosity and adhesion to films, and a method for producing the same.A method for producing urethane for printing ink binders, wherein a polyurethane is obtained by reacting a polyol (A), a polyisocyanate compound (B) and a chain extender (C), and the polyol (A) contains a polyesterether polyol (A1) which is obtained by copolymerizing a polycarboxylic acid anhydride (b) and an alkylene oxide (c) to an initiator (a) in the presence of a catalyst (x).
摘要:
An aspect of the invention is a radio wave shielding case including, a case body having at least a first facet and a second facet connected to the first facet, the first facet including an opening configured to surround a reading facet of a wireless tag reader antenna, a wireless tag slit which is formed in the second facet of the case body and enables a wireless tag to be inserted in the case body so as to face the reading facet of the antenna surrounded by the opening, and a radio wave absorber which covers the opening of the case body and an inner surface except for the wireless tag slit.
摘要:
To provide an adherence substance which has a low viscosity and good coatability, can be made solvent free, has good adhesion to an adherend and at the same time has excellent removability, can suppress peel electrostatic charge and is excellent in high speed peeling performance.An adherence substance which is obtainable by curing a curable composition comprising a silyl group-containing polymer (S) represented by the following formula (1): in the formula (1), R1 represents a t-valent residue obtained by removing all hydroxy groups from a compound having t pieces of hydroxy groups in the molecule; R2 represents a bivalent organic group; R3 represents a monovalent organic group having from 1 to 20 carbon atoms; X is a hydroxy group or a hydrolyzable group; Y represents a bivalent group represented by the following formula (A) or a bivalent group represented by the following formula (B); a represents an integer of from 1 to 3; r represents an integer of from 1 to 1,000; t represents an integer of from 1 to 8; in the formula (A), R4 represents an alkylene group having from 2 to 8 carbon atoms; and in the formula (B), R5 represents an alkylene group having from 2 to 4 carbon atoms.
摘要:
An electrical component is mounted a circuit board. A case covers the circuit board. The circuit board includes a plate-like metal core and an insulation portion. The insulation portion covers a surface of the metal core. The metal core is provided with a heat radiation portion exposed from the case.
摘要:
In an intake valve lift variable engine including: an engine body; a cylinder head; an intake valve which is disposed in the cylinder head and which is controlled to be open and close so as to regulate the amount of intake air; and an intake system having no throttle valve and connected to the cylinder head, blow-by gas is sucked from a crank case of the engine body into a first pump and pressurizingly transferred by the first pump to the side of the intake system, and purge gas from a canister is mixed into the blow-by gas pressurizingly transferred by the first pump. Thus, the blow-by gas and the purge gas are guided to the intake system.
摘要:
A method of producing a heat insulating board comprising two opposed facings and a core made of a rigid synthetic resin foam, which comprises spraying or injecting a foam mix for the rigid synthetic resin foam into the space between the opposed face materials and expanding and curing the foam mix, wherein the foam mix comprises a particular polyol, a polyisocyanate, a foam stabilizer, a catalyst and a blowing agent, wherein the polyol contains a polyether polyol having a hydroxyl value of at most 84 mgKOH/g and an oxyethylene group content of at least 40 wt %; a polyether polyol which is obtained by adding a cyclic ether to an amine compound and has a hydroxyl value of from 250 to 900 mgKOH/g; and fine polymer particles stably dispersed in the polyol.
摘要:
In a mold cavity and/or in horizontal cooling zones, upstream- and downstream-side gears are drivingly coupled to each other through an endless-track-like member to which the tensile force is exerted by a tensioner, so that gaps between the adjacent block molds can be eliminated and therefore intrusion and leakage of a cooling liquid and melt are prevented.