The present invention relates to a separator for a secondary battery, the separator including a substrate and a coating layer formed on the surface of the substrate, wherein the coating layer includes an organic binder and inorganic particles, and the organic binder contains an ethylenically unsaturated group, and to a lithium secondary battery including the same.

The present invention relates to a separator for a secondary battery, the separator including a substrate and a coating layer formed on the surface of the substrate, wherein the coating layer includes an organic binder and inorganic particles, and the organic binder contains an ethylenically unsaturated group, and to a lithium secondary battery including the same.

The present disclosure provides a coating composition for forming a coating that at least partially mobilizes in response to UV light, the composition comprising a monomer selected from acrylates, methacrylates and mixtures thereof, a cross-linking agent comprising two sub-units covalently bonded together, each sub-unit comprising an unsaturated group which is co-polymerisable with the monomer, wherein the two sub-units are adapted to dissociate in response to irradiation by UV light. The cross-linking agent may be present in the coating composition in an amount of less than 15 mol % of the total of the monomer and cross-linking agent.

The present disclosure provides a coating composition for forming a coating that at least partially mobilizes in response to UV light, the composition comprising a monomer selected from acrylates, methacrylates and mixtures thereof, a cross-linking agent comprising two sub-units covalently bonded together, each sub-unit comprising an unsaturated group which is co-polymerisable with the monomer, wherein the two sub-units are adapted to dissociate in response to irradiation by UV light. The cross-linking agent may be present in the coating composition in an amount of less than 15 mol % of the total of the monomer and cross-linking agent.

Surface-modified nanoparticles wherein each nanoparticle includes an inorganic core and surface modifying groups, wherein the surface modifying groups include at least one triorganoborane-amine complex having the structure ZNHR.sup.1B(R.sup.2).sub.3 wherein: Z is a divalent organic group; R.sup.1 is H or an organic group; and each R.sup.2 is independently an organic group bound to the boron atom through a carbon atom. The inorganic core is typically an inorganic oxide core, e.g., silica, zirconia, or alumina.

Surface-modified nanoparticles wherein each nanoparticle includes an inorganic core and surface modifying groups, wherein the surface modifying groups include at least one triorganoborane-amine complex having the structure ZNHR.sup.1B(R.sup.2).sub.3 wherein: Z is a divalent organic group; R.sup.1 is H or an organic group; and each R.sup.2 is independently an organic group bound to the boron atom through a carbon atom. The inorganic core is typically an inorganic oxide core, e.g., silica, zirconia, or alumina.

A process of manufacturing a polymer product includes continuously forming a temporary container; introducing an unsaturated monomer component and a radical polymerization component into the temporary container; sealing the temporary container to form a sealed temporary container; and allowing the unsaturated monomer component to polymerize in the sealed temporary container to form the polymer product via a radical polymerization reaction.

A process of manufacturing a polymer product includes continuously forming a temporary container; introducing an unsaturated monomer component and a radical polymerization component into the temporary container; sealing the temporary container to form a sealed temporary container; and allowing the unsaturated monomer component to polymerize in the sealed temporary container to form the polymer product via a radical polymerization reaction.

Process for preparing (meth)acrylates of the formula (I)
CH.sub.2C(R.sup.1)COOR.sup.2(I)
in which R.sup.1 is hydrogen or methyl and
R.sup.2 is a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C.sub.6-C.sub.14)-aryl-(C.sub.1-C.sub.8)-alkyl radical;
by reacting a (meth)acrylate of the formula II
CH.sub.2C(R.sup.1)COOR.sup.3(II)
with an alcohol of the formula (III)
HOR.sup.2(III)
in the presence of an amount of a suitable catalyst which catalyzes the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization;
the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in that
the specific total oxygen input is less than or equal to 1.0 l/kg, measured in liters of oxygen per kilogram of (meth)acrylate of the formula (I), where the volume of oxygen introduced is calculated at a temperature of 25 C. and a pressure of 101 325 pascal. The resulting (meth)acrylates can surprisingly be processed to particularly high molecular weight emulsion polymers which are, for example, outstandingly suitable for use as flow resistance reducers in mineral oil extraction.

Process for preparing (meth)acrylates of the formula (I)
CH.sub.2C(R.sup.1)COOR.sup.2(I)
in which R.sup.1 is hydrogen or methyl and
R.sup.2 is a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C.sub.6-C.sub.14)-aryl-(C.sub.1-C.sub.8)-alkyl radical;
by reacting a (meth)acrylate of the formula II
CH.sub.2C(R.sup.1)COOR.sup.3(II)
with an alcohol of the formula (III)
HOR.sup.2(III)
in the presence of an amount of a suitable catalyst which catalyzes the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization;
the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in that
the specific total oxygen input is less than or equal to 1.0 l/kg, measured in liters of oxygen per kilogram of (meth)acrylate of the formula (I), where the volume of oxygen introduced is calculated at a temperature of 25 C. and a pressure of 101 325 pascal. The resulting (meth)acrylates can surprisingly be processed to particularly high molecular weight emulsion polymers which are, for example, outstandingly suitable for use as flow resistance reducers in mineral oil extraction.