Aqueous latex of vinylidene chloride copolymer An aqueous latex [latex (L)] of a vinylidene chloride copolymer [copolymer (A)], wherein the copolymer (A) consists essentially of recurring units derived from vinylidene chloride (VDC) in an amount comprised between 89.0 and 91.0 wt % of the copolymer, recurring units derived from methacrylonitrile (MAN) in an amount comprised between 2.00 and 5.50 wt % of the copolymer, recurring units derived from at least one ionic comonomer (ICO) in an amount comprised between 0.5 and 1.4 wt % of the copolymer (A), and recurring units derived from methylmethacrylate (MMA) in an amount such that the total of recurring units of VDC, MAN, ICO and MMA is 100 wt %, and wherein the latex (L) comprises at least one surfactant [surfactant (S)] in an amount comprised between 0.09 and 1.50 wt % of the copolymer (A).
Process for the manufacture of the aqueous latex (L), film made therefrom and retort pouch prepared with such film.

Aqueous latex of vinylidene chloride copolymer An aqueous latex [latex (L)] of a vinylidene chloride copolymer [copolymer (A)], wherein the copolymer (A) consists essentially of recurring units derived from vinylidene chloride (VDC) in an amount comprised between 89.0 and 91.0 wt % of the copolymer, recurring units derived from methacrylonitrile (MAN) in an amount comprised between 2.00 and 5.50 wt % of the copolymer, recurring units derived from at least one ionic comonomer (ICO) in an amount comprised between 0.5 and 1.4 wt % of the copolymer (A), and recurring units derived from methylmethacrylate (MMA) in an amount such that the total of recurring units of VDC, MAN, ICO and MMA is 100 wt %, and wherein the latex (L) comprises at least one surfactant [surfactant (S)] in an amount comprised between 0.09 and 1.50 wt % of the copolymer (A).
Process for the manufacture of the aqueous latex (L), film made therefrom and retort pouch prepared with such film.

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 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.

A multistage emulsion polymer comprising a first polymer and a second polymer comprising structural units of a nitrogen-containing heterocyclic monomer at specific weight ratios of the first polymer to the second polymer and a Tg difference between the first and second polymers; the multistage emulsion polymer suitable for use in coating applications to provide coating films with improved dirt pick-up resistance without compromising film formation properties.

A multistage emulsion polymer comprising a first polymer and a second polymer comprising structural units of a nitrogen-containing heterocyclic monomer at specific weight ratios of the first polymer to the second polymer and a Tg difference between the first and second polymers; the multistage emulsion polymer suitable for use in coating applications to provide coating films with improved dirt pick-up resistance without compromising film formation properties.

Composites made of a cross-linked acrylic polymer and an inorganic aggregate and/or mineral, with the cross-linked acrylic polymer being present at a concentration of 5% to 17%, by weight, are disclosed. Processes of preparing the composites are also disclosed.

Composites made of a cross-linked acrylic polymer and an inorganic aggregate and/or mineral, with the cross-linked acrylic polymer being present at a concentration of 5% to 17%, by weight, are disclosed. Processes of preparing the composites are also disclosed.

A resin particle dispersion containing core/shell-type resin particles and water is described. A shell portion resin of the core/shell-type resin particles contains a constitutional unit derived from a (meth)acrylic acid ester containing a hydrocarbon group having from 4 to 8 carbon atoms. A core portion resin of the core/shell-type resin particles contains a constitutional unit derived from a (meth)acrylamide-based monomer whose solubility parameter lies within the range of from 17.0 to 21.0 (J/cm.sup.3).sup.0.5 in an amount of not less than 5% by mass, and a glass transition temperature of the core portion resin is not higher than 50° C. An acid value of the core/shell-type resin particles is from 50 to 100 mgKOH/g. A process for producing the resin particle dispersion and a printing method using the resin particle dispersion is also described.

A resin particle dispersion containing core/shell-type resin particles and water is described. A shell portion resin of the core/shell-type resin particles contains a constitutional unit derived from a (meth)acrylic acid ester containing a hydrocarbon group having from 4 to 8 carbon atoms. A core portion resin of the core/shell-type resin particles contains a constitutional unit derived from a (meth)acrylamide-based monomer whose solubility parameter lies within the range of from 17.0 to 21.0 (J/cm.sup.3).sup.0.5 in an amount of not less than 5% by mass, and a glass transition temperature of the core portion resin is not higher than 50° C. An acid value of the core/shell-type resin particles is from 50 to 100 mgKOH/g. A process for producing the resin particle dispersion and a printing method using the resin particle dispersion is also described.