Abstract: Embodiments of the present disclosure describe a method of making a polycarbonate, comprising contacting one or more cyclic monomers and carbon dioxide in the presence of one or more of a Lewis acid catalyst, an initiator, and an ionic liquid; and agitating, sufficient to copolymerize the one or more cyclic monomers and carbon dioxide to create a polycarbonate. Embodiments of the present disclosure further describe a method of controlling a polymer composition, comprising contacting one or more cyclic monomers and carbon dioxide; adjusting an amount of one or more of a Lewis acid catalyst, an ionic liquid, and an initiator in the presence of the one or more cyclic monomers and carbon dioxide, sufficient to selectively modify a resulting polycarbonate; and agitating, sufficient to copolymerize the one or more cyclic monomers and carbon dioxide to create the polycarbonate.

Abstract: Provided herein are methods for synthesizing cyclic carbonates, glycocarbonates, and polyglycocarbonates by reacting polyol glycans with carbon dioxide. Synthesis can include selective polycondensation of polyol glycan hydroxyl moieties.

Abstract: Embodiments of the present disclosure describe initiating systems comprising an activator and an initiator, wherein the activator includes an alkyl borane or alkyl aluminum, wherein the initiator includes an organic cation and either an alkali metal or a compound containing an active protic hydrogen. Embodiments of the present disclosure further describe methods of making a polycarbonate comprising contacting a cyclic monomer and carbon dioxide in the presence of an activator and an initiator to form a polycarbonate, wherein the catalyst is one or more of an alkyl borane and alkyl aluminum, wherein the initiator includes an organic cation and either an alkali metal or a compound containing an active protic hydrogen.

Abstract: A process for living ring-opening polymerization can include exposing an N-carboxyanhydride monomer to an initiator that includes a first primary amine covalently linked to a first electron donor by a first linking group to form a polyamide polymer. The initiator can include a second primary amine, optionally a second electron donor, and optionally a third electron donor.

Abstract: The present invention relates to a process for preparing a compound comprising at least a urethane group —HN—C(?O)—O, said process comprising a step (E) in which a compound (I) comprising at least an isocyanate functional group —N?C?O is reacted with an organic compound (II) carrying at least a hydroxyl group —OH, said reaction being carried out in a presence of a carbene (III) used as a catalyst.

Abstract: The present invention relates to a process for preparing a compound comprising at least a urethane group —HN—C(?O)—O, said process comprising a step (E) in which a compound (I) comprising at least an isocyanate functional group —N?C?O is reacted with an organic compound (II) carrying at least a hydroxyl group —OH, said reaction being carried out in a presence of a carbene (III) used as a catalyst.

Abstract: The present invention provides a novel dicarbanionic initiator of formula (I). The present process further provides a process for the preparation of dicarbanionic initiator of formula (I) comprising reacting 1-bromo-4-(4?-bromophenoxy)-2-pentadecyl benzene of formula (II) with alkyllithium compound for an effecting halogen-lithium exchange reaction of 1-bromo-4-(4?-bromophenoxy)-2-pentadecyl benzene with sec-butyllithium in the presence of a non polar solvent, at a temperature in the range of 0 to 25° C. and its use as an initiator for the synthesis of telechelic polydienes and polystyrenes and SBS or SIS triblock copolymers.

Abstract: A photosensitive adhesive composition of the polymerizable resin type, the hardening of which occurs by polymerization and/or reticulation, includes:—initiators for at least one chain polymerization reaction to guarantee the hardening of the composition and a sufficient quantity of at least one bifunctional monomer, including a photolabile center with at least one photolabile entity and at least two polymerizable units, connected by covalent skeletons to the photolabile center and located away from the cleavage sites of the photolabile center, such that the 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.

Abstract: The invention relates to a block copolymer which is produced by a controlled radical polymerization, has an individual composition and structure and is used for adhesion in a humid medium The inventive copolymer comprises a continuous flexible and water repellent matrix (of elastomer nature) and a dispersed phase in the form of hydrophilic nanodomains. Said copolymer exhibits an excellent adhesion as a result of the structure thereof also in a very humid medium.

Abstract: Poly(ethylene oxide) (PEO) glycodendrimers can serve as multivalent inhibitors of selectin-mediated leukocyte recruitment regulating inflammatory response. Disclosed are compounds and methods relating to functionalized branched glycopolymers. In embodiments, the compounds are capable of modifying cell adhesion events and inflammatory conditions. In a particular embodiment, a multi-arm PEO polymer with sulfated lactose end groups can specifically inhibit interactions involving L-selectin. Also disclosed are methods of synthetic preparation and use.

Abstract: The present invention provides a novel dicarbanionic initiator of formula (I). The present process further provides a process for the preparation of dicarbanionic initiator of formula (I) comprising reacting 1-bromo-4-(4?-bromophenoxy)-2-pentadecyl benzene of formula (II) with alkyllithium compound for an effecting halogen-lithium exchange reaction of 1-bromo-4-(4?-bromophenoxy)-2-pentadecyl benzene with sec-butyllithium in the presence of a non polar solvent, at a temperature in the range of 0 to 250 C and its use as an initiator for the synthesis of telechelic polydienes and polystyrenes and SBS or SIS triblock copolymers.

Abstract: The invention concerns a method for preparing a first generation polymer comprising a step which consists in free radical polymerization of a composition comprising: at least an ethylenically unsaturated monomer, a source of free radicals, at least a dithiophosphoroester compound.

Abstract: The invention relates to a block copolymer which is produced by a controlled radical polymerisation, has an individual composition and structure and is used for adhesion in a humid medium. The inventive copolymer comprises a continuous flexible and water repellent matrix (of elastomer nature) and a dispersed phase in the form of hydrophilic mechanisms. Said copolymer exhibits and excellent adhesion as a result of the structure thereof also is a very humid medium.

Abstract: 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.

Abstract: The invention concerns a method for preparing a first generation polymer comprising a step which consists in free radical polymerization of a composition comprising: at least an ethylenically unsaturated monomer, a source of free radicals, and at least a cyclic organic compound including at least a tetrathiophosphate group.

Abstract: The invention concerns a method for preparing a first generation polymer comprising a step which consists in free radical polymerization of a composition comprising: at least an ethylenically unsaturated monomer, a source of free radicals, at least a dithiophosphoroester compound.

Abstract: The invention concerns a method for preparing a first generation polymer comprising a step which consists in free radical polymerization of a composition comprising: at least an ethylenically unsaturated monomer, a source of free radicals, and at least a cyclic organic compound including at least a tetrathiophosphate group.

Abstract: For the preparation of a multimodal polymer at least one monomer is subjected to free radical polymerization in the presence of several alkoxyamines comprising the sequence of formula: in which RL is a monovalent radical exhibiting a molar mass of greater than 15, A represents the core of the alkoxyamine and n is a non-zero integer, the alkoxyamines exhibiting different values of n.

Abstract: The invention relates to a process for the radical polymerization of at least one monomer in the presence of at least two stable free radicals of different natures. The use of two different stable free radicals is reflected by a higher productivity than that which would be expected on calculating the arithmetic mean of the productivities obtained with each of the stable free radicals when they are used individually.

Abstract: For the preparation of a multimodal polymer at least one monomer is subjected to free radical polymerization in the presence of several alkoxyamines comprising the sequence of formula: 1