The invention relates to a photosensitive adhesive composition of the polymerisable resin type, the hardening of which occurs by means of polymerisation and/or reticulation, characterised in comprising: - initiating means for at least one chain polymerisation reaction to guarantee the hardening of said composition and a sufficient quantity of at least one bifunctional monomer, comprising a photolabile centre with at least one photolabile entity and at least two polymerisable units, connected by covalent skeletons to said photolabile centre and located away from the cleavage sites of said photolabile centre, such that said composition loses the integrity and adhesivity thereof under the influence of a reticulating radiation causing the cleavage of the photolabile sites. The composition is particularly of application in dentistry.

Photosensitive adhesive composition

Curable organopolysiloxane compositions comprising (D) a platinum catalyst selected from the class consisting of (See formula III,IV, V, and H-C.ident.C-(R5)f-C.ident.C-[-Pt(R2)f-C.ident.C-]e-H (VI), where R2 is an unsubstituted or substituted diene bonded to platinum via at least one .pi. bond, having an unbranched or branched chain of from 4 to 12 carbon atoms or a ring of from 6 to 18 carbon atoms, R3 are identical or different and are a hydrogen atom, halogen atom or a monovalent, unsubstituted or halogen- or cyano-substituted hydrocarbon radical having from 1 to 24 carbon atoms, R4 are identical or different bivalent, unsubstituted or substituted hydrocarbon radicals having from 1 to 24 carbon atoms, R5 are identical or different bivalent, unsubstituted or substituted hydrocarbon radicals having from 1 to 12 carbon atoms, silane radicals or siloxane radicals, R6 are identical or different and are a hydrogen atom or a monovalent hydrocarbon radical having from 1 to 20 carbon atoms, e is an integer greater than or equal to 1, and f is 0 or 1.

Curable organopolysiloxane compositions

The invention relates to crosslinkable reactive silicone organic copolymers, obtainable by the radically initiated solution polymerization of a) one or more ethylenically unsaturated organic monomers, and b) one or more silicon macromers, characterized in that c) one or more ethylenically unsaturated monomers containing at least one further functional group is or are copolymerized in an organic solvent or solvent mixture and that monomer units c) of the prepolymers thus obtained are bonded by polymer analog reaction with one or more additional monomers in such a way that at least one crosslinkable reactive group is introduced in the silicone organic copolymers.

Crosslinkable reactive silicone organic copolymers and method for the production and use thereof

The invention relates to highly transparent organofunctional silicone copolymers, being self-dispersible in water without emulsifiers or protective colloid, being obtained by radically initiated solution polymerization of a) one or more ethylenically unsaturated organomonomers, and b) one or more siliconmacromeres, characterized in that c) one or more water soluble comonomeres are copolymerized in an organic solvent or solvent mixture.

Self-dispersible silicone copolymers and method for the production and use thereof

The invention relates to highly transparent organofunctional silicone copolymers, being self-dispersible in water without emulsifiers or protective colloid, being obtained by radically initiated solution polymerization of a) one or more ethylenically unsaturated organomonomers, and b) one or more siliconmacromeres, characterized in that c) one or more water soluble comonomeres are copolynerised in an organic solvent or solvent mixture.

Self-dispersible silicon copolymeres and method for the production and use thereof

Organosilan- und Organopolysiloxan-Radikalinitiatoren und damit herstellbare Makromonomere und Pfropfcopolymerisate

The organosilicon compounds contain at least one Si-C bonded organic radical containing at least one triazene group. The organosilicon compounds can be employed as thermo- and photolabile free-radical initiators for the preparation of homopolymers, graft copolymers and block copolymers from olefinically unsaturated compounds and for the crosslinking of organosilicon compounds and free-radical-polymerisable organic compounds.

Organosilicon compounds with triazene units

The organosilicon compounds have at least one Si--C-bonded organic radical which contains at least one triazene group. The organosilicon compounds can be employed as heat- and light-unstable free radical initiators for the preparation of homo-, graft co- and block copolymers from olefinically unsaturated compounds and for crosslinking organosilicon compounds and organic compounds which can be polymerized by free radical polymerization.

Organosilicon compounds having triazene groups

Organosilicic compound with triazene radical and its preparation

The organosilanes and organopolysiloxanes containing groups which form free radicals and are soluble in organic solvents, processes for their preparation, macromonomers and graft copolymers from the organosilanes and organopolysiloxanes according to the invention as free radical initiators and organic monomers which can be polymerized by free radicals, a process for the preparation of the macromonomers and graft copolymers and their use.

Brigitte Dr. Voit

Papers

Organosilan- und Organopolysiloxan-Radikalinitiatoren und damit herstellbare Makromonomere und Pfropfcopolymerisate

Organosilicon compounds with triazene units

Organosilicon compounds having triazene groups

Organosilicic compound with triazene radical and its preparation

Organosilane and organopolysiloxane free radical initiators and macromonomers and graft copolymers which can be prepared with them