Abstract: Photocurable composition curable by ultraviolet (UV) radiation comprising: A) at least one organosiloxane component A of the following formula (I): whereby Pa and Pb are each independently selected from a cationically polymerizable group, x+y is an integer ?1, Sp and Sp? are each independently selected from a cycloaliphatic hydrocarbon group and an aliphatic linear or branched hydrocarbon group, R1 and R2 are each independently linear or branched aliphatic or cycloaliphatic, alkoxy, aromatic or hetero aromatic groups; B) at least one second organosiloxane component B of the following formula (II): whereby n is an integer ranging from 7 to 300, x+y is an integer ?1, Pa and Pb are each independently selected from a cationically polymerizable group, Sp and Sp? are each independently selected from a cycloaliphatic hydrocarbon group and aliphatic linear or branched hydrocarbon group, R1, R2, R3, R4 are each independently linear or branched aliphatic or cycloaliphatic, alkoxy, aromatic or hetero aromatic group; C)

Abstract: Flame retardant compositions are disclosed which comprise (a) at least one particulate material which expands on the application of heat and (b) at least one particulate nano-filler, together with at least one polymer and/or at least one curable monomer or oligomer. The compositions may also contain certain silicon-based materials. Flame-retardant compositions comprising polyorganosiloxanes containing one or more functional groups selected from amino, hydroxyl, methacrylic, acrylic and epoxy groups, are also disclosed.

Abstract: The present invention relates to complexes of organoboranes with amino functional organosilicon compounds which are effective polymerisation initiators for radically polymerisable systems, especially acrylate or methacrylate adhesives. The complexes are partcularly useful in the preparation of adhesives for bonding low surface energy plastics based on, for example, polyolefins and polyfluoroolefins.

Abstract: A fast curable non-isocyanate-based polyurethane- and polyurethane-epoxy network nanocomposite polymeric compositions are derived upon crosslinking a mixture comprising of natural or modified nano-clay [ionic phyllosilicate] with platelet thickness in the scale of A (˜1 nm) and aspect ratio (length/thickness) higher than 10 (nm)] preferably natural or modified montmorillonite with either a monomer(s) or oligomer(s) bearing at least one cyclocarbonate group or a mixture of the latter with an epoxy resin, with a hardener, which is a monomer or oligomer or mixtures therefrom, bearing primary and/or secondary amino groups. The use of the nanoclays reduces the gel time and increases the adhesion of the cured polyurethane and polyurethane/epoxy hybrid and also reduces its water absorption.

Abstract: Bioresorbable cyanoacrylate-based adhesives containing body fluid soluble additives are disclosed. The body fluid soluble additives are compounds which are insoluble in cyanoacrylate monomer but which are readily dissolved out of the cured adhesive in application. The resulting pores and channels which provide ready pathways for connective tissue ingrowth and facilitating quick wound healing. The adhesives of the invention are useful for wound and incision closure, implants, medical device fixation, embolic agents and other general medical applications.

Abstract: Flame retardant compositions are disclosed which comprise (a) at least one particulate material which expands on the application of heat and (b) at least one particulate nano-filler, together with at least one polymer and/or at least one curable monomer or oligomer. The compositions may also contain certain silicon-based materials. Flame-retardant compositions comprising polyorganosiloxanes containing one or more functional groups selected form amino, hydroxyl, methacrylic, acrylic and epoxy groups, are also disclosed.