Various coating compositions are described which provide protection for polymeric films and particularly PVC films. The coating compositions include particular resin(s) and opacifying agents. Also described are coated films utilizing the compositions and methods of forming the coated films.

Various coating compositions are described which provide protection for polymeric films and particularly PVC films. The coating compositions include particular resin(s) and opacifying agents. Also described are coated films utilizing the compositions and methods of forming the coated films.

An aqueous coating composition having an extended open time and capable of providing coating films with good properties including stain resistance and block resistance, a process of preparing the aqueous coating composition, and a method of extending open time of an aqueous coating composition.

The object of the present disclosure is to provide a method for producing a crosslinked polymer by radical polymerization of a monomer composition, by which method a desired crosslinked polymer can be produced in a high solid content with good productivity (also at a low production cost), and a crosslinked polymer obtained by the production method and a coating composition containing the same. A method for producing a crosslinked polymer having a weight average molecular weight of 15000 to 200000, the method comprising step [I] of obtaining a crosslinked polymer (A) by conducting polymerization of a monomer composition comprising 2 to 30% by weight of a polyfunctional methacrylate having 2 to 4 functional groups (a) and 98 to 70% by weight of one or more polymerizable monomers selected from the group consisting of monofunctional (meth)acrylates, (meth)acrylic acid, and monofunctional vinyl aromatic compounds (b) in an organic solvent in the presence of a radical polymerization initiator in a temperature region where the radical polymerization initiator comes to have a half-life of 4 to 18 minutes.

Provided is a pressure sensitive adhesive article comprising (a) a substrate (Sa) (b) in contact with the substrate (Sa), a layer (Lb) of a pressure sensitive composition (Cb) that comprises one or more acrylic polymer (POLb) having Tg of 20° C. or lower, and (c) in contact with the layer (Lb), a layer (Lc) that comprises, (i) one or more acrylic polymer (POLc) having Tg of 20° C. or lower, and (ii) one or more olefin copolymer. Also provided are a method of making the pressure sensitive adhesive article and a bonded article made by using the pressure sensitive adhesive article.

Provided is a pressure sensitive adhesive article comprising (a) a substrate (Sa) (b) in contact with the substrate (Sa), a layer (Lb) of a pressure sensitive composition (Cb) that comprises one or more acrylic polymer (POLb) having Tg of 20° C. or lower, and (c) in contact with the layer (Lb), a layer (Lc) that comprises, (i) one or more acrylic polymer (POLc) having Tg of 20° C. or lower, and (ii) one or more olefin copolymer. Also provided are a method of making the pressure sensitive adhesive article and a bonded article made by using the pressure sensitive adhesive article.

An organic co-polymeric compound characterized by polarizability and resistivity has a general structural formula:

##STR00001##

P1 and P2 are structural units selected from acrylate, methacrylate, repeat units for polypropylene (PP), repeat units for polyethylene (PE), siloxane, and repeat units for polyethylene terephthalate. Tail is a resistive substitute that includes an oligomer of a polymeric material and n is a number of P1-Tail repeat units. Q is an ionic functional group, which is connected to the structural unit P2 via a linker group L, and m is a number of P2-L-Q repeat units. The ionic functional group Q comprises one or more ionic liquid ions, zwitterions, or polymeric acids. B is a counter ion in the form of a molecule or oligomer that can supply an opposite charge to balance a charge of the co-polymer, and s is the number of the counter ions in the compound.

An organic co-polymeric compound characterized by polarizability and resistivity has a general structural formula:

##STR00001##

P1 and P2 are structural units selected from acrylate, methacrylate, repeat units for polypropylene (PP), repeat units for polyethylene (PE), siloxane, and repeat units for polyethylene terephthalate. Tail is a resistive substitute that includes an oligomer of a polymeric material and n is a number of P1-Tail repeat units. Q is an ionic functional group, which is connected to the structural unit P2 via a linker group L, and m is a number of P2-L-Q repeat units. The ionic functional group Q comprises one or more ionic liquid ions, zwitterions, or polymeric acids. B is a counter ion in the form of a molecule or oligomer that can supply an opposite charge to balance a charge of the co-polymer, and s is the number of the counter ions in the compound.

A coating composition is provided comprising nanoparticles and certain polymers comprising carboxylic acid groups or salts thereof. When applied to articles, the coating is resistant to soiling by both dry dust and wet soil. Coated articles and methods of applying coatings are also described herein.

A temperature-responsive hydrogel which contains a carboxyl group-bearing polymer and a divalent-metal salt of an organic acid is provided. The carboxyl group-bearing polymer may be a homopolymer of a carboxyl group-bearing monomer or a copolymer of a plurality of monomers including the monomer. A method for producing the temperature-responsive hydrogel involves immersing a carboxyl group-bearing polymer in an aqueous solution of a divalent-metal salt of an organic acid. The concentration of the divalent-metal salt of an organic acid in the aqueous solution may be 50 mM to the saturation concentration. It is possible to provide a temperature-responsive gel having an LCST with no volume phase transition and a method for producing the temperature-responsive gel.