Provided is a porous layer structure including a base material (A) and a urethane foam layer provided on the base material (A), wherein the urethane foam layer is a foam layer formed by foaming a urethane prepolymer having an isocyanate group, the urethane foam layer has a density of 0.10 to 0.60 g/cm.sup.3, and the urethane prepolymer substantially contains no volatile component and satisfies a predetermined composition.

Adhesive compositions comprise a polyester polyol that includes residues of at least one 2, 2, 4, 4-tetraalkylcyclobutane-1, 3-diol, including, for example, 2, 2, 4, 4-tetramethylcyclobutane-1, 3-diol (TMCD). Adhesive compositions as described herein exhibit enhanced properties as compared to conventional adhesive compositions, and may be suitable for a wide variety of end use applications, including, flexible packaging, woodworking, automotive uses, and electronics.

The object of the present invention is to provide a moisture-curable hot melt adhesive having high initial adhesive strength, long open time, excellent coating property and reduced stringing property. The present invention relates to a moisture-curable hot melt adhesive comprising (A) a urethane prepolymer having a terminal isocyanate group, (B) a metallocene-based polyolefin having a viscosity of 10,000 mPa.Math.s or less at a temperature of 170° C. and (C) a polyester-polyether copolymer.

The object of the present invention is to provide a moisture-curable hot melt adhesive having high initial adhesive strength, long open time, excellent coating property and reduced stringing property. The present invention relates to a moisture-curable hot melt adhesive comprising (A) a urethane prepolymer having a terminal isocyanate group, (B) a metallocene-based polyolefin having a viscosity of 10,000 mPa.Math.s or less at a temperature of 170° C. and (C) a polyester-polyether copolymer.

The invention relates to a composition and to a process for preparing moisture-crosslinking polymers under catalysis by at least one metal-siloxane-silanol(ate) compound, and to the use of the composition in the CASE sector (coatings, adhesives, sealants and elastomers), especially in the field of adhesives and sealants.

The present invention relates to a compound of the following formula (I): Formula (I),

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as well as the polyurethanes obtained from these compounds, and their uses in sealant formulations.

The present invention relates to a compound of the following formula (I): Formula (I),

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as well as the polyurethanes obtained from these compounds, and their uses in sealant formulations.

The present invention provides a coating method including: a step of supplying a coating agent to a surface of a lens base material; a spreading step of spreading the coating agent supplied to the surface by rotation of the lens base material; a first removal step of removing at least a part of a liquid pool of the coating agent generated on a peripheral edge portion and/or a side surface portion of the lens base material by rotation of the lens base material after the spreading step; and a second removal step of removing the liquid pool remaining on the peripheral edge portion and/or the side surface portion of the lens base material by bringing an adsorption member into contact with at least the side surface of the lens base material after the first removal step. According to the present invention, it is possible to provide a coating method capable of obtaining a base material having a coating layer excellent in uniformity of film thickness by reducing the liquid pool of the coating agent generated on the peripheral edge portion and/or the side surface portion of the lens base material when the coating layer is formed on the surface of the base material by spin coating the coating agent.

The present invention provides a coating method including: a step of supplying a coating agent to a surface of a lens base material; a spreading step of spreading the coating agent supplied to the surface by rotation of the lens base material; a first removal step of removing at least a part of a liquid pool of the coating agent generated on a peripheral edge portion and/or a side surface portion of the lens base material by rotation of the lens base material after the spreading step; and a second removal step of removing the liquid pool remaining on the peripheral edge portion and/or the side surface portion of the lens base material by bringing an adsorption member into contact with at least the side surface of the lens base material after the first removal step. According to the present invention, it is possible to provide a coating method capable of obtaining a base material having a coating layer excellent in uniformity of film thickness by reducing the liquid pool of the coating agent generated on the peripheral edge portion and/or the side surface portion of the lens base material when the coating layer is formed on the surface of the base material by spin coating the coating agent.

Disclosed is a moisture reactive polyurethane hot melt adhesive composition that can be applied to substrates at a low coating weight even at application temperatures as low as 60 to 95° C. while retaining the advantageous high tack, green strength, cured bond strength and toughness of conventional high melting point polyurethane hot melt adhesives.