Abstract:
The present invention relates to a polyolefin composition comprising a cross-linkable polyolefin with hydrolysable silane groups; an acidic silanol condensation catalyst, wherein the acidic silanol condensation catalyst (B) is present in an amount of 0.0001 to 3 wt.% of the polyolefin composition; at least one UV stabilizer selected from the group consisting of phenols, triazines, benzophenones, triazoles and/or combinations thereof; and at least one UV stabilizer of the hindered amine type (HALS) which is present in an amount of 0.0001 to 0.1 wt.% of the polyolefin composition. The present invention also relates to an article comprising such a composition, and to the use of such a composition for the production of an article.
Abstract:
The present invention relates to a polyolefin composition comprising a cross-linkable polyolefin with hydrolysable silane groups, an acidic silanol condensation catalyst, wherein the acidic silanol condensation catalyst is present in an amount of 0.0001 to 3 wt.% of the polyolefin composition, at least one UV stabilizer selected from the group consisting of phenols, benzophenones and/or combinations thereof, wherein component (C) is present in an amount of 0.0001 to 0.35 wt.% of the polyolefin composition, and/or at least one UV stabilizer selected from triazines, wherein component (D) is present in an amount of 0.0001 to 2.0 wt.% of the polyolefin composition. The present invention also relates to an article comprising such a composition, and to the use of such a composition for the production of an article.
Abstract:
The present invention relates to a polymer composition comprising (a) a polymer portion, and (b) at least one silanol condensation catalyst, wherein each catalyst is selected from: i) a compound of formula (I): ArSO 3 H or a precursor thereof, wherein Ar is an 1 to 4 alkyl groups substituted aryl, wherein the aryl is phenyl or naphthyl, and wherein each alkyl group, independently, is a linear or branched alkyl with 10 to 30 carbons, wherein the total number of carbons in the alkyl groups is in the range of 20 to 80 carbons; ii) a derivative of i) selected from the group consisting of an anhydride, an ester, an acetylate, an epoxy blocked ester and an amine salt thereof which is hydrolysable to the corresponding compound of formula (I); and iii) a metal salt of i) wherein the metal ion is selected from the group consisting of copper, aluminum, tin and zinc, wherein the polymer portion comprises (a1) a non-polar polymer component in an amount of 0 to 90% by weight, and (a2) a polar component, in an amount of at least 10% by weight, which polar component contains 3 to 30% by weight of a polar comonomer; an article, for example, a coating, a wire or a cable, comprising the polymer composition, a process for producing an article and use of the polymer composition.
Abstract:
The present invention relates to a polymer composition,which is a silanol condensation catalyst masterbatch,comprises a matrix, comprising a silane containing drying agent, and at least one silanol condensation catalyst, wherein each catalyst has a water content which is 0.1 % by weight, or lower, and is selected from: i) a compound of formula I ArSO 3 H (I) or a precursor thereof, wherein Ar is an 1 to 4 alkyl groups substituted aryl, wherein the aryl is phenyl or naphthyl; and wherein each alkyl group, independently, is a linear or branched alkyl with 10 to 30 carbons, wherein total number of carbons in the alkyl groups is 20 to 80 carbons; ii) a derivative of i) selected from the group consisting of an anhydride, an ester, an acetylate, an epoxyblocked ester and an amine salt thereof which is hydrolysable to the corresponding compound of formula I; and iii) a metal salt of i) wherein the metal ion is selected from the group consisting of copper, aluminum, tin and zinc; an article, for example, a coating, a wire or a cable, comprising the polymer composition, and process for producing an article.
Abstract:
The present invention discloses a process for providing a cross-linked composition, the process comprising the steps of (a) providing an ethylene-α-olefin plastomer having - a density of from 850 kg/m³ to 900 kg/m³; and - an melt flow rate (ISO 1133, 2.16kg, 190°C) of 0.3 to 50 g/10min; (b) grafting the ethylene-α-olefin plastome rwith silane crosslinker such that the content of silane crosslinker is in the range of 0.1 to 10.0 wt.- % with respect to the grafted ethylene-α-olefin plastomer; (c) contacting said grafted ethylene-α-olefin plastomer with 2 to 8 wt.-% of a tin-free silane crosslinking catalyst with respect to the resulting mixture of grafted ethylene-α-olefin plastomer and tin-freesilane crosslinking catalyst, wherein said tin-free catalyst comprises a Brönsted acid at 23°C and 50% relative humidity for at least 15 minutes thus forming a cross-linked composition, wherein gel content of said cross-linked composition after 15 min is at least 60%.
Abstract:
The present invention relates to a layer element (L) comprising an ethylene polymer (a), to a multilayer assembly, preferably a photovoltaic multilayer assembly, comprising the layer element (L) of the invention, to an article comprising the layer element (L), preferably comprising a multilayer laminate comprising the layer element (L), more preferably a multilayer laminate of a photovoltaic (PV) module comprising the layer element (L) of the invention, to use of said layer element (L) for producing an article, preferably a photovoltaic module (PV), as well as to a process for producing an article, preferably a photovoltaic module, of the invention comprising the layer element (L).
Abstract:
The present invention relates to a lamination process for producing a multilayer laminate which comprises a one or more substrate element(s) and one or more polymeric layer element(s), preferably to a lamination process for producing a photovoltaic (PV) module,and to a PV module laminate.
Abstract:
The present invention relates to a polymer composition, to a layer element, preferably to at least one layer element of a photovoltaic module, comprising the polymer composition and to an article which is preferably said at least one layer of a layer element, preferably of a layer element of a photovoltaic module.
Abstract:
The present invention relates to a polymer composition, to a layer element, preferably to at least one layer element of a photovoltaic module, comprising the polymer composition and to an article which is preferably said at least one layer of a layer element, preferably of a layer element of a photovoltaic module.
Abstract:
The present invention is directed to a foamable polyolefin composition which is crosslinkable by silane groups, to a crosslinked foam obtained from such a foamable polyolefin composition, and to a process for producing a crosslinked foam based on the foamable polyolefin composition. The foamable polyolefin composition comprises a polyethylene bearing hydrolysable silane groups and comonomer units comprising a polar group selected from the group consisting of acrylic acid, methacrylic acid, acrylates, methacrylates, vinyl esters, and mixtures thereof, a silanol condensation catalyst, a physical blowing agent, and a cell nucleating agent.