The present invention relates to a process for reducing the number of defects in an ordered film comprising a block copolymer (BCP). The invention also relates to the compositions used to obtain these ordered films and to the resulting ordered films that can be used in particular as masks in the lithography field.

The invention relates to a polyacrylate-based graft copolymer comprising a polyacrylate backbone and polyolefin side chains grafted thereon, wherein the graft copolymer is prepared by reacting a first polymer and a second polymer, wherein the first polymer comprises recurring units having the structure (I) and optionally further recurring units having the structures (II): Formulae (I), (II) wherein R.sup.1, R.sup.3 is H or CH.sub.3 and R.sup.2 is a hydrocarbon moiety comprising 1 to 6 carbon atoms, one of R.sup.4 and R.sup.5 is H and the other one of R.sup.5 and R.sup.4 is COOR.sup.2, C═N, Cl, or an aliphatic or aromatic hydrocarbon moiety optionally containing one or multiple hetero atom functionalities, wherein R.sup.2 in (I) is different from R.sup.2 in (II) and the second polymer is a functionalized polyolefin having one or multiple hydroxyl functional groups, wherein the graft copolymer is formed by transesterification of the COOR.sup.2 group of (1) or (II) with the hydroxyl functional group of the functionalized polyolefin.

The present invention relates to a surface treatment agent for soft contact lens, containing a reaction product obtained through a reaction between the following poly(meth)acrylic acid and the following copolymer (P): Poly(meth)acrylic acid: a poly(meth)acrylic acid having an average molecular weight of 1,000 to 2,000,000, and Copolymer (P): a copolymer obtained through polymerization of a specified hydrophilic monomer (n.sub.A) and a specified reactive monomer (n.sub.B), wherein in the copolymer, the hydrophilic monomer (n.sub.A) is 80 to 99 mol %, the reactive monomer (n.sub.B) is 1 to 20 mol %, and a weight average molecular weight is 10,000 to 5,000,000.

In accordance with the present invention, it is possible to provide a surface treatment agent for soft contact lens capable of tremendously enhancing surface hydrophilicity of a soft contact lens to improve discomfort.

The present invention relates generally to polyelectrolyte-layer forming block copolymers adsorbed at colloid interfaces in aqua solution and compositions and uses thereof. In particular, the present invention relates to agricultural material compositions comprising particles of at least one agricultural material and a polyelectrolyte-layer forming block copolymer. The present invention also relates to non-agricultural material compositions comprising particles of at least one non-agricultural material and a polyelectrolyte-layer forming block co-polymer.

To provide a modified vinylaromatic copolymer which can be used in production of copolymer rubber and which has reactivity and solubility, and a copolymer rubber material obtained therefrom, which simultaneously has processability, strength, and homogeneity. The modified vinylaromatic copolymer is a copolymer containing a structural unit (a) derived from a divinylaromatic compound and a structural unit (b) derived from a monovinylaromatic compound, wherein the structural unit (a) at least partially includes the following crosslinked structural unit (a1), and a terminal is modified by a modification group having at least one functional group selected from the group consisting of an amino group, a hydroxyl group, and an alkoxysilyl group.

The present invention relates generally to polyelectrolyte-layer forming block copolymers adsorbed at colloid interfaces in aqua solution and compositions and uses thereof. In particular, the present invention relates to agricultural material compositions comprising particles of at least one agricultural material and a polyelectrolyte-layer forming block copolymer. The present invention also relates to non-agricultural material compositions comprising particles of at least one non-agricultural material and a polyelectrolyte-layer forming block co-polymer.

A first ethylene-based interpolymer comprising, in polymerized form, monomer units derived from ethylene and from a benzocyclobutene (VBCB) structure of Structure 1; wherein n is from 3 to 10; and wherein the ethylene-based polymer comprises, in polymerized form, from 0.02 to 0.70 wt % of the Structure 1, based on the weight of the first ethylene-based interpolymer, as determined by .sup.1H NMR is provided. Further provided is a composition which comprises a second ethylene-based inter-polymer formed by thermally treating a first ethylene-based interpolymer.

A wax-polymer compound includes (a) a polymer component that is a polymerized unsaturated monomer, optionally copolymerized with a vinyl-aromatic monomer, and (b) a halogenated hydrocarbon wax component. The polymer component is grafted to the halogenated hydrocarbon wax component, and the wax-polymer compound has a number average molecular weight of about 1,000 to about 100,000, A method of making the wax-polymer compound and a coated silica particle are also disclosed. A rubber composition includes a rubber elastomer comprising a polymerized unsaturated monomer and optionally a polymerized vinyl-aromatic monomer, the elastomer having a number average molecular weight of about 100,000 to about 1,000,000. It further includes a filler in an amount of about 5 to about 200 phr, the filler comprising carbon black, silica, or both; and a wax-polymer additive.

The present invention provides amphiphilic comb polymer compositions of phosphorus acid group containing backbone polymers of methacrylic anhydride having hydrophobic alkyl, aryl, cycloalkyl or polyolefin ester or amide side chain groups formed on the backbone polymers and comprising from 75 to 100 wt. %, based on the total weight of monomers used to make the backbone polymer, of methacrylic acid polymerized units, wherein in the backbone polymer from 20 to less than 70 wt. %, preferably from 50 to 67 wt. % of the methacrylic acid polymerized units comprise methacrylic anhydride groups as determined by titration of the backbone polymer. As polymeric additives, the polymers can compatibilize polyolefins and polar polymers like polyesters.

A wax inhibitor composition, the composition having at least one alpha-olefin maleic anhydride copolymer of the formula: ##STR00001##
wherein R.sub.1 is selected from hydrocarbyl groups containing 10-30 carbon atoms, and R.sub.2 is selected from a hydrogen or hydrocarbyl groups containing 10-80 carbon atoms, and R.sub.2, if not hydrogen, is broadly dispersed, wherein R.sub.2 comprises a weight fraction of carbon numbers greater than 30, wherein R.sub.2 can be the same or different, and n is a number of repeating units ranging from 1 to 100.