The invention relates to a polyisocyanate mixture comprising a polyisocyanate component A) having aliphatically and/or cycloaliphatically bonded isocyanate groups and a polyisocyanate component B) having araliphatically and/or aromatically bonded isocyanate groups, characterized in that the polyisocyanate component A) comprises at least 0.85% by weight of sulfonate groups (calculated as SO.sub.3; molar weight=80 g/mol) in chemically bonded form and the proportion of the polyisocyanate component B) is 7 to 43% by weight of the total amount of the components A) and B). The invention further relates to the use thereof and also coating compositions comprising the polyisocyanate mixture and also the substrates coated with these coating compositions.

A tissue adhesive composition comprises a biodegradable adhesive; nanoparticles; and a tissue regenerative agent. Methods of adhering tissue comprise applying a film of the tissue adhesive composition to a first surface of a first biological tissue; contacting a second surface of a second biological tissue with the first surface of the first biological tissue, wherein the film of the composition is positioned between and in contact with both the first surface and the second surface.

It is an object of the present invention to provide a coating composition that is capable of forming a coating film having good coating film appearance (e.g., smoothness) and design properties and having well-balanced coating film properties such as scratch resistance, and that allows its coating film to be cured by a simple method because of being thermally curable. A further object of the present invention is to provide a method for forming a coating film, which comprises forming a coating film using the coating composition of the present invention. More specifically, the present invention provides a coating composition containing at least one branched polymer selected from a dendrimer and a hyperbranched polymer, and an isocyanate compound having an isocyanate group and an alkylsilanol group, and having the number of isocyanate functional group of 1 or more.

A method forming a surface modifying composition with reduced need for organic solvent and evaporation thereof for removal of insoluble reaction byproducts from the composition. The purified composition can be used in the formation of articles having improved biocompatibility, such as medical articles (e.g., spun hollow fiber).

[1] A polymerizable composition for an optical component, including a polyisocyanate component, a polythiol component, and a compound represented by formula (1) in an amount of 5 ppm by mass or more and 10,000 ppm by mass or less with respect to the total amount of the polyisocyanate component and the polythiol component, [2] an optical component resin that is a polymerized product of the polymerizable composition according to the above-described [1], [3] a spectacle lens including a lens substrate that is formed of the optical component resin according to the above-described [2], and [4] spectacles including the spectacle lens according to the above-described [3].

The present invention relates to a coating composition and a method for preparing the same, a coating method and use thereof as well as a product coated with the coating composition. The coating composition comprises: A) a hydroxyl-containing component consisting of: a) a polycaprolactone polyol, b) a polyester polyol having a hydroxyl content of not less than 10 wt. % as measured in accordance with DIN EN ISO 4629-2, c) an optional polyacrylate polyol, and d) an optional polycarbonate polyol; and B) a polyisocyanate; wherein the equivalent ratio of isocyanate groups to hydroxyl groups of the composition is 0.5-1.2. A coating formed from the coating composition provided by the present invention has good reflowing, and especially can rapidly reflow at normal temperature.

The present invention relates to liquid dual curing (moisture) and photocuring adhesives which are optically transparent/clear. More particularly, the present invention relates to liquid optically transparent/clear adhesives having at least one photo- and/or heat-curable polyolefin-based oligomer, with or without a moisture-curable polyolefin-based oligomer; a curative package to trigger and/or accelerate cure of the oligomer(s) under appropriate cure conditions; and at least one polyolefin-based polyurethane that is not reactive under the cure conditions with the photo- and/or heat-curable polyolefin-based oligomer or the moisture-curable polyolefin-based oligomer. The present invention also relates to optical assemblies that include such optically clear adhesives.

According to an embodiment of the present invention, provided are hollow particles which have a wall portion containing polyurethane or polyurea, have an internal porous structure, and have a plurality of opening spaces blocked by the wall portion in an outermost portion of the porous structure, and a manufacturing method thereof, and a pore forming material, particles for cosmetics, and a weight reducing material.

The present invention relates to a coating composition and a method for preparing the same, a coating method and use thereof as well as a product coated with the coating composition. The coating composition comprises: A) a hydroxyl-containing component consisting of: a) a polyester-modified polycarbonate polyol having a number-average molecular weight of 500-6000 g/mol, the amount of which is greater than 50 wt. % based on that the weight of the hydroxyl-containing component is 100 wt. %, b) an optional polyester polyol having a hydroxyl content of not less than 10 wt. % as measured in accordance with DIN EN ISO 4629-2, and c) an optional polyacrylate polyol; and B) a polyisocyanate; wherein the equivalent ratio of isocyanate groups to hydroxyl groups of the composition is 0.5-1.2. A coating formed from the coating composition provided by the present invention has good appearance and adhesion as well as good reflowing, and especially can rapidly reflow at normal temperature.

Silicone polyurea block copolymers are prepared by copolymerizing: (a) a diamine composition that includes a polyethylene glycol diamine, and optionally, a dipiperidyl alkane; (b) a monofunctional silicone isocyanate; and (c) a diisocyanate. Compositions useful as passivating coatings comprising the block copolymer are also provided, and substrates coated with the compositions. Methods of preparing and using the compositions are also described.