Disclosed is a terminally functionalized polysiloxane urethane polymer comprising: polysiloxane segments comprising from 50 to 98% by weight based on the total polymer weight; urethane segments comprising from 2 to 50% by weight based on the total polymer weight; and terminal functional groups selected from (meth)acrylate functional groups, alkoxysilyl functional groups and mixtures thereof. The terminally functionalized polysiloxane urethane polymer finds use in liquid optically clear adhesive formulations wherein it can provide dual photo and moisture cure properties. In some embodiments cured reaction products of the liquid optically clear adhesive composition prepared with the terminally functionalized polysiloxane urethane polymer exhibit low haze of 2% or less and low yellowness b* values of 2 or less as prepared and after aging testing. In some embodiments cured reaction products of the liquid optically clear adhesive composition prepared with the terminally functionalized polysiloxane urethane polymer exhibit minimal shrinkage and a stable compression storage modulus from 40 to 100 C.

A method of increasing a polymerization reaction rate of a base monomer composition that has slow free-radical polymerization kinetics. The method comprises combining an effective amount of a nanogel to the base monomer composition to form a monomer-nanogel mixture having a polymerization reaction rate that is greater than the polymerization reaction rate of the base monomer composition when subjected to an identical free-radical polymerization reaction conducted under identical conditions. The base monomer composition comprises one or more slow-kinetic monomers with slow free radical polymerization kinetics in which <25% of the double bonds are converted within the first 10 mintes of said reaction. The nanogel is soluble in the base monomer composition. The nanogel is derived from a nanogel-forming monomer mixture that comprises: at least one monovinyl monomer; at least one divinyl monomer; a chain transfer agent; and an initiator.

Compounds of formula (I) are photoinitiators or photosensitizers in a photopolymerizable composition:

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R.sub.1 represents a monovalent, linear, branched or cyclic, aliphatic hydrocarbon group having 1 to 20 carbon atoms, optionally substituted with substituent(s) selected from Cl, Br, OH, O, NHCO OR.sub.2, NHCOR.sub.2 or free-radically or ionically polymerizable groups. Each R.sub.2 is independently H or C.sub.1-6 alkyl; n is 1. If n=1, Z and Y are absent and X represents OR.sub.3; if n is >1, Z represents OR.sub.4, Y represents ORs and X represents H or OH. R.sub.3 represents H or R.sub.1; and R.sub.4 and R.sub.5 each independently represent a bivalent hydrocarbon group. The polymerizable moieties as optional substituents of R.sub.1 are polymerizable double or triple bonds, lactam, lactone and epoxide moieties, which are subjectable to ring-opening polymerization; and two of R.sub.1 to R.sub.5 may be linked to one another to form a ring or a dimer.

Disclosed is a simplified process for formation of polyisobutylene functionalized with at least one terminal primary or secondary alcohol. The process comprises subjecting an olefin functional polyisobutylene, butyl rubber, or mixtures thereof to ozonation and reduction thereby forming mono-alcohol and diol functional polyisobutylene. The formed functional polyisobutylenes can serve as precursors for many other functionalized polyisobutylenes including urethane polyisobutylenes, urethane polyisobutylenes capped with (meth)acrylate functions, and (meth)acrylate capped polyisobutylenes.

The present invention relates to a method for producing an object in an additive manufacturing process from a precursor and comprises the following steps: I) depositing a layer of a radically cross-linkable construction material, which corresponds to a first selected cross-section of the precursor, on a carrier; II) depositing a layer of a radically cross-linkable construction material, which corresponds to a further selected cross-section of the precursor, on a previously applied layer of the radically cross-linked construction material; III) repeating step II) until the precursor is formed. The radically cross-linkable construction material comprises a thermoplastic radically cross-linkable polyurethane with a urethane group content of 5% by weight and a photoinitiator. The radically cross-linkable construction material is also heated to a processing temperature that is greater than the melting point of the radically cross-linkable polyurethane. After step III) the precursor having a temperature of 20 C. is defined as the object, or step IV) is performed: IV) performing a chemical reaction in the precursor obtained after step III) so that the object is obtained.

The present invention provides an adhesive composition for optical use, including a polyester-based urethane acrylate oligomer, an acrylate-based monomer, a photoinitiator, and a Anti-hydrolysis agent, and an optical device equipped with an adhesive layer including photocured products of the adhesive composition for optical use.

The present invention provides an adhesive composition for optical use, including a polyester-based urethane acrylate oligomer, an acrylate-based monomer, a photoinitiator, and a Anti-hydrolysis agent, and an optical device equipped with an adhesive layer including photocured products of the adhesive composition for optical use.

An adhesive composition including a resin and an electro-conductive material, wherein the electro-conductive material is one or more salts selected from sodium salt, potassium salt, and calcium salt having two fluorosulfonic acid structures per molecule and 5 or more carbon atoms shown by formula (1): .sup.O.sub.3SYLa-A-Lb-YSO.sub.3.sup.(M.sup.n+).sub.2/n (1), wherein, A represents a divalent hydrocarbon group having 1-30 carbon atoms and optionally substituted by a heteroatom or optionally interposed by a heteroatom; La and Lb each represent a linking group like an ether group, ester group; Y represents an alkylene group having 2-4 carbon atoms, containing 1-6 fluorine atoms, and optionally containing a carbonyl group; M.sup.n+ represents any of Na.sup.+, K.sup.+, Ca.sup.2+. This can form a living body contact layer for a bio-electrode with excellent electric conductivity, biocompatibility, and light weight, which can be manufactured at low cost and without large lowering of electric conductivity even when it is wetted with water or dried.

Provided is a coating agent that can be formed into a surface layer having excellent self-restoring properties and stain-proof properties by applying the coating agent onto a surface of a base material (for example, thermoplastic polyurethane) and curing the resulting material. The coating agent according to the present application contains urethane (meth)acrylate-based resin (a), fluorine-based compound (b) and photopolymerization initiator (d). Urethane (meth)acrylate-based resin (a) has weight average molecular weight (Mw) of 10,000 to 800,000. Fluorine-based compound (b) has at least two polymerizable functional groups. The surface layer formed of the coating agent has excellent self-restoring properties of a scratch, stain-proof properties and stretchability.

The present invention relates to an antimicrobial polymer coating composition comprising: a urethane acrylate-based oligomer or polymer having a molar ratio of a urethane functional group to a (meth)acrylate-based functional group of 1 to 10; a photosensitizer; and a photoinitiator; an antimicrobial polymer film comprising a cured product of the antimicrobial polymer coating composition; and an antimicrobial polymer film comprising a predetermined urethane acrylate-based polymer resin; and a photosensitizer dispersed in the polymer resin, wherein the polymer film has oxygen permeability of 5 to 100 cc/m.sup.2 day.