Abstract: A method of stabilizing radical ethylene copolymerization reactions for approximately 5 to 10 minutes, the method including using a phenolic compound with other comonomers and performing the radical ethylene copolymerization reactions at high pressure. Also, a method of preparing an ethylene copolymer at high pressure in the presence of one or more phenolic compounds, as defined below, and one or more initiators.

Abstract: The present invention relates to the use of one or more phenolic compounds, as defined below, to stabilise ethylene copolymer reactions at high pressure. The invention also relates to a method of preparing an ethylene copolymer at high pressure in the presence of one or more phenolic compounds, as defined below, and one or more initiators.

Abstract: The invention relates to a process for manufacturing polyethylene or an ethylene copolymer, comprising a step of radical polymerization or copolymerization of ethylene in the presence: of a first peroxide polymerization initiator chosen from the diperketal peroxide compounds of formula: in which the R1, R2, R3, R6, R7 and R8 groups consist of substituted or unsubstituted, linear, branched or cyclic C1-C10 alkyl groups, of a second initiator, other than said first initiator, also consisting of a diperketal peroxide of formula (I).

Abstract: The use of a polymeric composition as an encapsulant in a photovoltaic module, said polymeric composition including a copolymer that comprises an ethylene monomer and a carboxylic acid vinyl ester comonomer, in particular an ethylene vinyl acetate copolymer, and the polymeric composition having a Brookfield viscosity measured at 120° C. of between 10,000 mPa·s and 25,000 mPa·s. Further, a method for encapsulating a photovoltaic module using this polymeric composition.

Abstract: The invention relates to a process for manufacturing polyethylene or an ethylene copolymer, comprising a step of radical polymerization or copolymerization of ethylene in the presence: of a first peroxide polymerization initiator chosen from the diperketal peroxide compounds of formula: in which the R1, R2, R3, R6, R7 and R8 groups consist of substituted or unsubstituted, linear, branched or cyclic C1-C10 alkyl groups, of a second initiator, other than said first initiator, also consisting of a diperketal peroxide of formula (I).

Abstract: A process for the manufacture of copolymers of ethylene and of at least one vinyl ester, including the following steps: a) fermentation of renewable starting materials so as to produce at least one alcohol comprising ethanol; b) dehydration of the alcohol obtained so as to produce at least one alkene comprising ethylene and, optionally, purification of the alkene so as to obtain ethylene, c) copolymerization of the ethylene with at least one vinyl ester, d) isolation of the copolymer obtained. Also, the copolymers of ethylene and of at least one vinyl ester in which the ethylene is at least partly obtained from renewable starting materials, and to uses thereof.

Abstract: The use of a polymeric composition as an encapsulant in a photovoltaic module, said polymeric composition including a copolymer that comprises an ethylene monomer and a carboxylic acid vinyl ester comonomer, in particular an ethylene vinyl acetate copolymer, and the polymeric composition having a Brookfield viscosity measured at 120° C. of between 10,000 mPa·s and 25,000 mPa·s. Further, a method for encapsulating a photovoltaic module using this polymeric composition.

Abstract: The present invention relates to olefin polymers having associative groups containing nitrogen heterocyclic compounds, to hot-melt adhesives including such polymers, and to method for producing same. Specifically, the invention relates to a polymer comprising units from ethylene and from a monomer having associative groups, said monomer including a polymerizing reactive group and an associative group containing nitrogen heterocyclic compounds.

Abstract: A process for the manufacture of copolymers of ethylene and of at least one vinyl ester, comprising the following steps: a) fermentation of renewable starting materials so as to produce at least one alcohol comprising ethanol; b) dehydration of the alcohol obtained so as to produce at least one alkene comprising ethylene and, optionally, purification of the alkene so as to obtain ethylene, c) copolymerization of the ethylene with at least one vinyl ester, d) isolation of the copolymer obtained. Also, copolymers of ethylene and of at least one vinyl ester in which the ethylene is at least partly obtained from renewable starting materials, and to uses thereof.

Abstract: The present invention relates to olefin polymers having associative groups containing nitrogen heterocyclic compounds, to hot-melt adhesives including such polymers, and to method for producing same. Specifically, the invention relates to a polymer comprising units from ethylene and from a monomer having associative groups, said monomer including a polymerizing reactive group and an associative group containing nitrogen heterocyclic compounds.

Abstract: The present application relates to a process for the manufacture of copolymers of ethylene and of at least one vinyl ester, comprising the following steps: a) fermentation of renewable starting materials so as to produce at least one alcohol comprising ethanol; b) dehydration of the alcohol obtained so as to produce at least one alkene comprising ethylene and, optionally, purification of the alkene so as to obtain ethylene, c) copolymerization of the ethylene with at least one vinyl ester, d) isolation of the copolymer obtained. The application also relates to the copolymers of ethylene and of at least one vinyl ester in which the ethylene is at least partly obtained from renewable starting materials, and to uses thereof.

Abstract: The present application relates to a process for the manufacture of copolymers of ethylene and of at least one vinyl ester, comprising the following steps: a) fermentation of renewable starting materials so as to produce at least one alcohol comprising ethanol; b) dehydration of the alcohol obtained so as to produce at least one alkene comprising ethylene and, optionally, purification of the alkene so as to obtain ethylene, c) copolymerization of the ethylene with at least one vinyl ester, d) isolation of the copolymer obtained. The application also relates to the copolymers of ethylene and of at least one vinyl ester in which the ethylene is at least partly obtained from renewable starting materials, and to uses thereof.

Abstract: The present invention describes linear or star block copolymers, their process of preparation and their use in adhesive compositions, in particular as pressure-sensitive adhesive. The copolymers of the invention are prepared by controlled radical polymerization by nitroxides; they exhibit at least one soft block with a Tg of less than 0° C. and at least one hard block with a Tg of greater than ambient temperature.

Abstract: The present invention describes linear or star block copolymers, their process of preparation and their use in adhesive compositions, in particular as pressure-sensitive adhesive. The copolymers of the invention are prepared by controlled radical polymerization by nitroxides; they exhibit at least one soft block with a Tg of less than 0° C. and at least one hard block with a Tg of greater than ambient temperature.

Abstract: The present invention relates to a hot-melt adhesive composition comprising: 20 to 80% of a blend comprising: 50 to 100% of (A), which denotes a polyamide-block graft copolymer consisting of a polyolefin backbone and at least one polyamide graft, 0 to 50% of at least one polymer (B) chosen from polyolefins and polyamides; 80 to 20% of a blend comprising at least one tackifying resin and optionally at least one product chosen from waxes, plasticizers and mineral fillers; in which: the said graft is attached to the backbone via the residues of an unsaturated monomer (X) chosen from unsaturated carboxylic acids, anhydrides of unsaturated carboxylic acids and unsaturated epoxides; the residues of the unsaturated monomer (X) are attached to the backbone by grafting or copolymerization from its double bond; the molar mass {overscore (M)}n of the grafts is between 1000 and 5000; the melting point of the grafts is between 100 and 190° C.; and the MFI of (A) is between 1 and 500 (g/10 mm at 190° C.

Abstract: The present invention relates to a hot-melt adhesive composition comprising:

Abstract: The invention concerns a method for preparing resins branched or crosslinked by heat treatment with a polymer in the presence of a multinitroxide and optionally a free radical initiator, to obtain a resin exhibiting properties of beat reversibility. The initial polymer can be a rubber or a thermoplastic polymer. The resins obtained provide conditions for use similar to those of the initial polymers while exhibiting enhanced mechanical properties.

Abstract: The invention describes the use in a formulation for floor adhesives of an aqueous dispersion containing from 5 to 70% by weight of at least one polymer having a glass transition temperature below 0° C. and carrying a ureido functional group.

Abstract: The invention relates to a process for packaging reactive hot-melt adhesive, which consists of pouring the adhesive composition in the molten state directly into a container (1) coated with a material (2) which is abherent on its inner face and with a material (3) which is moistureproof on its outer face, the container being provided with at least one easy-opening start device; and in securing a moisture-proof lid (4) to the free face of the container. It also relates to the packaged adhesives.