Abstract: The present invention relates to a composition for producing a polymer, comprising: a) from 20 to 60% by weight, based on the entire composition, of at least one monomer; and b) from 30 to 60% by weight, based on the entire composition, of at least one branched pre-polymer, wherein the composition is liquid at room temperature and under normal pressure; use of the composition, a method for producing a polymer using the composition, as well as an electrically dimmable glazing that encloses the polymer.

Abstract: The present invention relates to a composition for producing a polymer, comprising: a) from 20 to 60% by weight, based on the entire composition, of at least one monomer; and b) from 30 to 60% by weight, based on the entire composition, of at least one branched pre-polymer, wherein the composition is liquid at room temperature and under normal pressure; use of the composition, a method for producing a polymer using the composition, as well as an electrically dimmable glazing that encloses the polymer.

Abstract: Methods are described herein for converting carbocationically terminated polymers to anionically terminated polymers. These methods comprise: (a) providing a carbocationically terminated polymeric moiety; (b) reacting the carbocationically terminated polymeric moiety with a heterocyclic compound of the formula where —X— is selected from —S—, —O—, —NH— and —NR—, and where R is an alkyl group or an aryl group, thereby providing an end-capped polymeric moiety; and (c) reacting the end-capped polymeric moiety with an organolithium compound to yield an anionically terminated polymeric moiety. Also described are block copolymers in which a first polymer block comprising cationically polymerized monomers is linked to a second polymer block comprising anionically polymerized monomers by a group, as well as a polymer in which a polymer block comprising cationically polymerized monomers is linked to a halogenated silane residue or a carbosilane residue by a group.

Abstract: Methods are described herein for converting carbocationically terminated polymers to anionically terminated polymers. These methods comprise: (a) providing a carbocationically terminated polymeric moiety; (b) reacting the carbocationically terminated polymeric moiety with a heterocyclic compound of the formula where —X— is selected from —S—, —O—, —NH— and —NR—, and where R is an alkyl group or an aryl group, thereby providing an end-capped polymeric moiety; and (c) reacting the end-capped polymeric moiety with an organolithium compound to yield an anionically terminated polymeric moiety. Also described are block copolymers in which a first polymer block comprising cationically polymerized monomers is linked to a second polymer block comprising anionically polymerized monomers by a group, as well as a polymer in which a polymer block comprising cationically polymerized monomers is linked to a halogenated silane residue or a carbosilane residue by a group.

Abstract: The initiation system comprises (1) at least one silylated initiator and (2) at least one alkaline metal alcoholate as ligand. The silylated initiator may be monofunctional and selected in particular from among the compounds of Formula (I) or difunctional and selected in particular from among the compounds of Formula (II): wherein R1, R2, R3 each independently represent a C1-C8alkyl radical, linear or branched; R4 is a linear or branched C1-C8alkylene radical; M is an alkaline metal or alkaline earth metal (valence q of 1 or 2); R5 and R6 each independently represent an alkyl radical, linear or branched, at C1-C8; R7, R8 each independently represent a C1-C8alkylene radical, linear or branched; M′ is an alkaline metal. Application is to the preparation of (meth)acrylic (co)polymers.

Abstract: The present invention relates to an initiation system comprising at least one initiator, with the exception of amides of alkaline metals, and at least one alkaline metal alcoholate of the formula ROM, in which M is an alkaline metal and R represents a group Q—R1—(OR2—)m wherein Q is a heterocyclic compound with 5 or 6 chain links, substituted or not, having 1 or 2 oxygen atoms as heteroatoms, R1 and R2 represent an alkylene group, linear or branched at C1-C4, and m is equal to 0, 1, 2 or 3. The present invention also relates to the application of the initiation system to the preparation of (meth)acrylic (co)polymers and, possibly, ethylenically unsaturated monomers that can be copolymerized with (meth)acrylic monomers.