Abstract: A polyurethane coating composition including: a polyol compound as a main agent; a polyisocyanate compound as a curing agent; and a quaternary ammonium salt composed of a tertiary amine compound and a weak acid.

Abstract: To prevent misalignment between substrates and distortion of surface, and to keep film thickness uniformity of thin substrate when two substrates are bonded for bonded member, bonded member manufacturing apparatus of bonding first substrate and second substrate, comprising resin film forming means for forming liquid state resin film on the first substrate, semi-curing means for maintaining outer peripheral section of resin film in uncured state and curing inner section surrounded with outer peripheral section in semi-cured state, and substrate bonding means for bonding first substrate and second substrate by bringing second substrate into contact with resin film, such that one end of outer peripheral section is determined as starting point of contact so that boundary line between contact portion and noncontact portion moves in one direction from starting point to opposite end of outer peripheral section while applying pressing force to second substrate.

Abstract: A filtering apparatus for removing impurities out of a lubrication oil for use in an internal combustion engine including low and high density filters having inlets commonly connected to an inlet conduit through which the lubrication oil to be filtered is supplied, an orifice arranged in an outlet conduit of the low density filter to produce a reduced pressure due to a fast oil flow and a conduit connected between an outlet of the high density filter and the orifice. Due to the reduced pressure applied to the outlet of the high density filter, a part of the oil is effectively sucked into the high density filter.

Abstract: A filtering member made of a filtering paper or nonwoven fabric tape is folded into a V-shaped cross sectional configuration, absorbing agents are uniformly dropped into the folded filtering member, the filtering member is further folded to wrap the absorbing agents therein and finally the filtering member is twisted to form a filter medium in the form of a string. The absorbing agents may be active carbon, active kaoline, water absorbing resin, magnetized magnetic material or combinations thereof.