The aim of the invention is to provide polyester/primer/metallic coating composite films having good adherence of the metallic coating in dry and humid conditions. Said films also form a good gas barrier: oxygen permeability less than or equal to 0.8 cc/m2/d; water vapour permeability less than or equal to 0.3 g/m2/d. To this end, the invention concerns a composite film comprising a polyester substrate, at least one coating adhering on at least one of the faces of the substrate and at least one layer of primer for cross-linked adhesion between the substrate and the coating. Said primer comprises at least one acrylic and/or methacrylic polymer P1, at least one acrylic and/or methacrylic polymer P2 different from P1, at least one cross-linking agent, and, preferably, at least one polyester that is soluble or dispersible in water: —P1 having a gel content TG1>70% by dry weight with respect to P1; —P2 having a gel content TG2≤TG1 and ≤20% by dry weight, with respect to P2; —P1 having a surface-grafted free weak acid content≥0.8 in meq/g of polymer; —[P2]≤60% by weight on dry by weight in respect to P1+P2. The method for producing said film, the adhering primer, and the articles obtained using said film, also form part of the present invention.

A method for preparing core/shell particles includes forming a suspension of ethylenically unsaturated monomer droplets containing one or more monomers and a porogen in an aqueous medium containing a first stabilizer and a polymerization initiator, wherein at least one of the monomers is a cross-linking monomer, and wherein the first stabilizer is an inorganic colloid. The method further includes polymerizing the one or more monomers to form core/shell particles having a core of a porous polymer and a polymeric shell having a shell thickness of at least 5 nm, wherein any pores in the polymeric shell have a diameter of less than 2 nm.

Polymers are disclosed that incorporate portions of secondary or tertiary polyamide segments connected with polyisocyanates. These polymers have enhanced matting properties. The enhanced matting properties are from creating an inherently matt surface from the polymer without the use of any separate fine particle size matting additives. Conventional matting agents such as fine particle size silica usually results in loss of physical properties such as haze development and porosity in the coating from the matting agent. Composites and hybrids of these polymers and other polyamides, polyurethane with vinyl polymers (acrylates) are also disclosed and claimed.

The present invention provides, for example, a laminated film for molding, which not only has a hard coating ability equal to or more than conventional one, but also is improved in shape followability of the entire laminated film. The laminated film for molding of the present invention includes at least a substrate film, a hard coating layer, and a functional layer in the listed order, in which the hard coating layer includes at least a resin and 1 to 50 parts by mass of an inorganic oxide particle based on 100 parts by mass of the entire resin component included in the hard coating layer.

A process includes combining a copolymer and mono- or di-valent metal ions to form a mixture, wherein the copolymer has from about 70 to about 98 wt % of an alpha-olefin moiety and about 2 to about 30 wt % of a (meth)acrylate moiety; reactively extruding the mixture to form a neutralized copolymer having a melt flow index of from about 5 to about 1500 g/10 min, wherein about 2 to about 50 wt % of the (meth)acrylate moiety is neutralized to form a mono- or di-valent metal salt present in an amount of from about 0.2 to about 20% based on the total (meth)acrylic acid content of the copolymer; and grinding the neutralized copolymer to form the powder having a Dv50 particle size of from about 10 to about 600 μm as determined using ASTM D5861, wherein the process is free of utilizing a liquid and/or a slurry.

A primer-attached thermoplastic resin material having a thermoplastic resin material and one or plural primer layers laminated on the thermoplastic resin material, wherein at least one layer of the primer layers is a layer derived from a film.

The present invention discloses a preparation method for a surface molding film of a PVC-based stone plastic composite board, including: surface activation treatment of the PVC-based stone plastic composite board: preparation of an activated putty, coarse roughening of a substrate surface, application and solidification of the activated putty, and fine roughening of the substrate surface; preparation of a PMMA slurry; and surface film forming of the PVC-based stone plastic composite board. The PVC-based stone plastic composite board coated with a PMMA film is obtained by cold pressing and shaping in a mold, tightening up a clamp, solidifying at low temperature, treating at high temperature, cooling and demolding. The PVC-based stone plastic composite board coated with the PMMA film prepared by the present invention can avoid the problems of large investment in production lines and equipment and high production costs involved in the production of floorboards by the conventional surface printing and surface laminating technologies, to partially replace composite floorboards, stone, acrylic panels, and curtain wall panels, etc. currently popular in the market, and provide a new path for the high additional utilization of waste.

A laminated body (1) includes a base material (10) and an antistatic coating layer (11). The antistatic coating layer (11) is provided on the base material (10) and contains carbon nanotubes and a resin. The specific surface area per unit weight of the carbon nanotubes is 350 m.sup.2/g or more.

A recording paper includes: a laminated resin film including a substrate composed of a thermoplastic resin film and an underlayer disposed on at least one side of the substrate and composed of a thermoplastic resin composition; and a resin coating disposed facing the underlayer of the laminated resin film, wherein the underlayer has an indentation modulus of 50 to 1200 MPa, the resin coating contains a resin that is a reaction product of a cationic water-soluble polymer and a silane coupling agent, a content of a silane coupling agent component is 15 to 60 parts by mass with respect to 100 parts by mass of the cationic water-soluble polymer component in the resin coating, the resin coating is free from thermoplastic resin particles, and a content of an inorganic filler is 9 parts by mass or less with respect to 100 parts by mass of the cationic water-soluble polymer component in the resin coating.

A particle-dispersed polyimide precursor solution contains a polyimide precursor having a unit represented by the following formula (I), particles, and a solvent, in which the particle-dispersed polyimide precursor solution satisfies both the following conditions (1) and (2),

##STR00001## (in the formula (I), A represents a tetravalent organic group, and B represents a divalent organic group represented by any of the following formulas (B1) to (B4)),

##STR00002## (in the formulas (B1) to (B4), Ar.sup.1, Ar.sup.10, and Ar.sup.11 each independently represent a trivalent aromatic group which may have a substituent, Ar.sup.2, Ar.sup.4, Ar.sup.5, Ar.sup.7 and Ar.sup.8 each independently represent a divalent aromatic group which may have a substituent, Ar.sup.3 and Ar.sup.6 each independently represent a tetravalent aromatic group which may have a substituent or a group represented by the following formula (II), Ar.sup.9 represents a divalent aromatic group which may have a substituent or a group represented by the following formula (III), X.sup.1 to X.sup.7 each independently represent NRa, O, or S, Ra represents a hydrogen atom, an alkyl group which may have a substituent, or an aryl group, and * represents a bonding site with an adjacent linking group), and

##STR00003## (in the formulas (II) and (III), Ar.sup.12 and Ar.sup.13 each independently represent a trivalent aromatic group which may have a substituent, Ar.sup.14 and Ar.sup.15 each independently represent a divalent aromatic group which may have a substituent, Y and Z each independently represent O, S, S(═O).sub.2, or CRbRc, Rb and Rc each independently represent a hydrogen atom, an alkyl group which may have a substituent, or an aryl group, and * represents a bonding site with an adjacent linking group),

Condition (1): a total content of the groups represented by the formulas (B1) to (B4) is 1% by mass or more and 40% by mass or less with respect to a total amount of the polyimide precursor, and

Condition (2): a content of the particles is 5% by mass or more and 90% by mass or less with respect to a total content of the polyimide precursor and the particles.