A polymeric molecule having the formula: X—[C(A).sub.2C(B)(B′)].sub.n-Q[CY═C(Z)(Z′)] or [C(A).sub.2=C(B)].sub.n-Q[C(Y)(Y′)—C(Z)(Z′)]—X′, wherein A is either H or F; B and B′ are either H, F, or Cl, and are not necessarily the same; X and X′ are Br, Cl or I (and are not necessarily the same); Y and Y′ are F, Br, Cl or I (and are not necessarily the same); and wherein Z and Z′ are F, Br, Cl or I (and are not necessarily the same); Q is optional and is either oxygen (O) or sulfur (S); and n is at least 1.

A polymeric molecule having the formula: X—[C(A).sub.2C(B)(B′)].sub.n-Q[CY═C(Z)(Z′)] or [C(A).sub.2=C(B)].sub.n-Q[C(Y)(Y′)—C(Z)(Z′)]—X′, wherein A is either H or F; B and B′ are either H, F, or Cl, and are not necessarily the same; X and X′ are Br, Cl or I (and are not necessarily the same); Y and Y′ are F, Br, Cl or I (and are not necessarily the same); and wherein Z and Z′ are F, Br, Cl or I (and are not necessarily the same); Q is optional and is either oxygen (O) or sulfur (S); and n is at least 1.

An ultraviolet curing type coating resin composition having all of respective beneficial features of excellent state in chemical resistance, under high temperature, against human skin protection creams containing a mixture of alkyl esters of benzoic acid, as represented by Neutrogena Cream (registered trademark), excellent state in gas barrier property against metal-corrosive gases as represented by sulfur-containing gases, and excellent state in flexibility that accommodates three-dimensional shape forming processing is demanded, includes an ultraviolet curing type coating resin composition containing an unsaturated-group-containing acrylic resin, with a weight average molecular weight of 5000 to 70000, a number of (meth)acrylate functional groups per molecule of 5 to 40, a hydroxyl value of 2 to 200 mgKOH/g, and with a glass transition temperature of 20 to 90° C., a volatile organic solvent, and a photopolymerization initiator.

An ultraviolet curing type coating resin composition having all of respective beneficial features of excellent state in chemical resistance, under high temperature, against human skin protection creams containing a mixture of alkyl esters of benzoic acid, as represented by Neutrogena Cream (registered trademark), excellent state in gas barrier property against metal-corrosive gases as represented by sulfur-containing gases, and excellent state in flexibility that accommodates three-dimensional shape forming processing is demanded, includes an ultraviolet curing type coating resin composition containing an unsaturated-group-containing acrylic resin, with a weight average molecular weight of 5000 to 70000, a number of (meth)acrylate functional groups per molecule of 5 to 40, a hydroxyl value of 2 to 200 mgKOH/g, and with a glass transition temperature of 20 to 90° C., a volatile organic solvent, and a photopolymerization initiator.

A method of thinning a substrate and a method of thinning a display panel are disclosed. In the method of thinning the display panel, the display panel includes an upper substrate and a lower substrate disposed opposite to each other; the method includes: forming an adhesive layer between two surfaces of the upper substrate and the lower substrate which are face to face, the adhesive layer fills a gap between the upper substrate and the lower substrate, extends and overlays a part of a side surfaces of the display panel; and removing part of the display panel which corresponds to remaining part of the side surface non-overlaid by the adhesive layer.

There is provided a new pressure-sensitive adhesive resin composition that can have adhesiveness to the extent of being peelable in a room temperature condition, has fluidity by hot-melting, and can finally be crosslinked to firmly bond adherends to each other. There is proposed a pressure-sensitive adhesive resin composition comprising 100 parts by mass of an acrylic copolymer (A), 0.5 to 20 parts by mass of a crosslinking agent (B), and 0.1 to 5 parts by mass of a photopolymerization initiator (C), wherein the acrylic copolymer (A) is a graft copolymer having a weight average molecular weight of 5.0×10.sup.4 to 5.0×10.sup.5, contains as a trunk component of the graft copolymer a repeating unit derived from a (meth)acrylate, contains as a branch component of the graft copolymer a repeating unit derived from a macromonomer having a number average molecular weight of 5.0×10.sup.2 or more and less than 6.0×10.sup.3, and contains the repeating unit derived from the macromonomer in the acrylic copolymer (A) in a proportion in a range of 0.1 to 3 mol %.

The invention provides a resin-thin-film-forming composition employed in hydrofluoric acid etching, which composition contains a hydrogenated polybutadiene compound having a (meth)acrylic group and a radical polymerization initiator.

In an aspect, a method of synthesizing a graft copolymer comprises the steps of: copolymerizing a first macromonomer and a first reactive diluent; wherein said first macromonomer comprises a first backbone precursor directly or indirectly covalently linked to a first polymer side chain group; wherein said reactive diluent is provided in the presence of the first macromonomer at an amount selected so as to result in formation said graft copolymer having a first backbone incorporating said diluent and said first macromonomer in a first polymer block characterized by a preselected first graft density or a preselected first graft distribution of said first macromonomer. In some embodiments of this aspect, said preselected first graft density is any value selected from the range of 0.05 to 0.75. In some methods, the composition and amount of said diluent is selected to provide both a first preselected first graft density and a first preselected first graft distribution.

In an aspect, a method of synthesizing a graft copolymer comprises the steps of: copolymerizing a first macromonomer and a first reactive diluent; wherein said first macromonomer comprises a first backbone precursor directly or indirectly covalently linked to a first polymer side chain group; wherein said reactive diluent is provided in the presence of the first macromonomer at an amount selected so as to result in formation said graft copolymer having a first backbone incorporating said diluent and said first macromonomer in a first polymer block characterized by a preselected first graft density or a preselected first graft distribution of said first macromonomer. In some embodiments of this aspect, said preselected first graft density is any value selected from the range of 0.05 to 0.75. In some methods, the composition and amount of said diluent is selected to provide both a first preselected first graft density and a first preselected first graft distribution.

In an aspect, a method of synthesizing a graft copolymer comprises the steps of: copolymerizing a first macromonomer and a first reactive diluent; wherein said first macromonomer comprises a first backbone precursor directly or indirectly covalently linked to a first polymer side chain group; wherein said reactive diluent is provided in the presence of the first macromonomer at an amount selected so as to result in formation said graft copolymer having a first backbone incorporating said diluent and said first macromonomer in a first polymer block characterized by a preselected first graft density or a preselected first graft distribution of said first macromonomer. In some embodiments of this aspect, said preselected first graft density is any value selected from the range of 0.05 to 0.75. In some methods, the composition and amount of said diluent is selected to provide both a first preselected first graft density and a first preselected first graft distribution.