A graft copolymer resin obtainable by graft-polymerizing a vinyl monomer comprising a vinyl cyanide monomer and an aromatic vinyl monomer to a rubbery polymer, in which a free resin contained in the graft copolymer resin comprises 10 to 35% by mass of a constituent unit derived from a (meth)acrylic acid alkyl ester having an alkyl group containing 4 or more carbon atoms, based on the total amount of the free resins, and the graft copolymer resin satisfies at least one of the following requirements (1) and (2): (1) the rubbery polymer comprises a constituent unit derived from a (meth)acrylic acid alkyl ester having an alkyl group containing 4 or more carbon atoms; and (2) the vinyl monomer further comprises a (meth)acrylic acid alkyl ester having an alkyl group containing 4 or more carbon atoms.

A resist composition including a compound (D0) represented by general formula (d0) and a polymeric compound (A10) having a structural unit (a0) derived from a compound represented by general formula (a0-1) shown below (in formula (d0), n represents an integer of 2 or more; in formula (a0-1), W.sup.1 represents a polymerizable group-containing group; C.sup.t represents a tertiary carbon atom, and the α-position of C.sup.t is a carbon atom which constitutes a carbon-carbon unsaturated bond; R.sup.11 represents an aromatic hydrocarbon group which may have a substituent, or a chain hydrocarbon group; R.sup.12 and R.sup.13 each independently represents a chain hydrocarbon group, or R.sup.12 and R.sup.13 are mutually bonded to form a cyclic group ##STR00001##

A resist composition including a compound (D0) represented by general formula (d0) and a polymeric compound (A10) having a structural unit (a0) derived from a compound represented by general formula (a0-1) shown below (in formula (d0), n represents an integer of 2 or more; in formula (a0-1), W.sup.1 represents a polymerizable group-containing group; C.sup.t represents a tertiary carbon atom, and the α-position of C.sup.t is a carbon atom which constitutes a carbon-carbon unsaturated bond; R.sup.11 represents an aromatic hydrocarbon group which may have a substituent, or a chain hydrocarbon group; R.sup.12 and R.sup.13 each independently represents a chain hydrocarbon group, or R.sup.12 and R.sup.13 are mutually bonded to form a cyclic group ##STR00001##

A resist composition including a resin component having a constitutional unit derived from a compound represented by General Formula (a01-1) and a constitutional unit derived from a compound represented by General Formula (a02-1), and an acid generator component composed of an anion moiety and a cation moiety. In General Formula (a01-1), W.sup.1 represents a polymerizable group-containing group, C.sup.t represents a tertiary carbon atom, R.sup.11 represents an unsaturated hydrocarbon group which may have a substituent, R.sup.12 and R.sup.13 represent a chain saturated hydrocarbon group which may have a substituent, and a carbon atom at an α-position of C.sup.t constitutes a carbon-carbon unsaturated bond. In General Formula (a02-1), W.sup.2 represents a polymerizable group-containing group, Wa.sup.2 represents an aromatic hydrocarbon group, and n2 represents an integer in a range of 1 to 3 ##STR00001##

A resist composition including a resin component having a constitutional unit derived from a compound represented by General Formula (a01-1) and a constitutional unit derived from a compound represented by General Formula (a02-1), and an acid generator component composed of an anion moiety and a cation moiety. In General Formula (a01-1), W.sup.1 represents a polymerizable group-containing group, C.sup.t represents a tertiary carbon atom, R.sup.11 represents an unsaturated hydrocarbon group which may have a substituent, R.sup.12 and R.sup.13 represent a chain saturated hydrocarbon group which may have a substituent, and a carbon atom at an α-position of C.sup.t constitutes a carbon-carbon unsaturated bond. In General Formula (a02-1), W.sup.2 represents a polymerizable group-containing group, Wa.sup.2 represents an aromatic hydrocarbon group, and n2 represents an integer in a range of 1 to 3 ##STR00001##

The invention provides a method for producing photochromic silicone hydrogel (SiHy) contact lenses based on thermal cast-molding technology in a relatively efficient and consistent manner. The method is characterized by selecting a high radical-reactive hydrophilic acrylic monomer while eliminating any low radical-reactive hydrophilic N-vinyl amide monomer in a lens formulation (polymerizable composition), by selecting a weight ratio of low-radical-reactive hydrophilic N-vinyl amide monomer to a high radical-reactive hydrophilic acrylic monomer in a lens formulation if the low radical-reactive hydrophilic N-vinyl amide monomer is needed, and/or by using a relatively high temperature thermal initiator in a lens formulation, to control the lens properties (e.g., water content, elastic modulus, etc.) and lens processability (capability of dry-delensing from molds) of thermally cast-molded SiHy contact lenses while minimizing loss in photochromic ability of resultant SiHy contact lenses.

The invention provides a method for producing photochromic silicone hydrogel (SiHy) contact lenses based on thermal cast-molding technology in a relatively efficient and consistent manner. The method is characterized by selecting a high radical-reactive hydrophilic acrylic monomer while eliminating any low radical-reactive hydrophilic N-vinyl amide monomer in a lens formulation (polymerizable composition), by selecting a weight ratio of low-radical-reactive hydrophilic N-vinyl amide monomer to a high radical-reactive hydrophilic acrylic monomer in a lens formulation if the low radical-reactive hydrophilic N-vinyl amide monomer is needed, and/or by using a relatively high temperature thermal initiator in a lens formulation, to control the lens properties (e.g., water content, elastic modulus, etc.) and lens processability (capability of dry-delensing from molds) of thermally cast-molded SiHy contact lenses while minimizing loss in photochromic ability of resultant SiHy contact lenses.

The present disclosure relates to a thermoplastic resin having excellent impact strength, gloss, fluidity, and non-whitening properties and a method of preparing the same. The thermoplastic resin including an alkyl acrylate-alkyl methacrylate graft copolymer (A), or an alkyl acrylate-alkyl methacrylate graft copolymer (A) and a matrix resin (B) including one or more selected from the group consisting of an aromatic vinyl compound, a vinyl cyanide compound, an alkyl methacrylate, and an alkyl acrylate, wherein a total content of the alkyl acrylate is 20 to 50% by weight, and a butyl acrylate coverage value (X) as calculated by Equation 1 below is 50 or more.

X={(G−Y)/Y}×100  [Equation 1]

In Equation 1, G represents the total gel content (%) of the thermoplastic resin, and Y represents the content (% by weight) of butyl acrylate in the gel of the thermoplastic resin.

The present disclosure relates to a thermoplastic resin having excellent impact strength, gloss, fluidity, and non-whitening properties and a method of preparing the same. The thermoplastic resin including an alkyl acrylate-alkyl methacrylate graft copolymer (A), or an alkyl acrylate-alkyl methacrylate graft copolymer (A) and a matrix resin (B) including one or more selected from the group consisting of an aromatic vinyl compound, a vinyl cyanide compound, an alkyl methacrylate, and an alkyl acrylate, wherein a total content of the alkyl acrylate is 20 to 50% by weight, and a butyl acrylate coverage value (X) as calculated by Equation 1 below is 50 or more.

X={(G−Y)/Y}×100  [Equation 1]

In Equation 1, G represents the total gel content (%) of the thermoplastic resin, and Y represents the content (% by weight) of butyl acrylate in the gel of the thermoplastic resin.

A one-pack polymer modifier containing a) at least one process aid functionalized with a reactive epoxy, hydroxyl, β-keto ester, β-keto amide or carboxylic acid functional group, b) at least one impact modifier, c) optionally, at least one mineral filler and d) optionally, at least one further additive is useful for modifying the properties of thermoplastic polymers such as PVC, including reducing the surface gloss of an article prepared from the thermoplastic polymer and improving the impact strength of such an article.