The present application provides a polycarbonate-based coating resin composition having high adhesiveness, more specifically provides a polycarbonate resin composition that contains not less than 0.1 parts by mass of a polyisocyanate compound and 100 parts by mass of a terminal-modified polycarbonate resin (A) having a structural unit (2) and a terminal structure represented by structural formula (1). [In formula (1) and formula (2), R.sub.1-R.sub.7, X, Y, Z, and a are as described in the description.]

##STR00001##

The present application provides a polycarbonate-based coating resin composition having high adhesiveness, more specifically provides a polycarbonate resin composition that contains not less than 0.1 parts by mass of a polyisocyanate compound and 100 parts by mass of a terminal-modified polycarbonate resin (A) having a structural unit (2) and a terminal structure represented by structural formula (1). [In formula (1) and formula (2), R.sub.1-R.sub.7, X, Y, Z, and a are as described in the description.]

##STR00001##

A battery separator 100 of one aspect of the present invention includes a sheet-shaped or film-shaped porous substrate 20 and an aliphatic polycarbonate containing layer 10 covering one surface or both surfaces of the substrate 20. According to this battery separator, since the aliphatic polycarbonate containing layer 10 covering one surface or both surfaces of the substrate 20 is provided, it is possible to reliably prevent or suppress deterioration of battery characteristics due to at least overdischarge. In addition, since the substrate 20 constitutes the battery separator 100 together with the aliphatic polycarbonate containing layer 10, the mechanical strength as a battery separator can be improved.

A battery separator 100 of one aspect of the present invention includes a sheet-shaped or film-shaped porous substrate 20 and an aliphatic polycarbonate containing layer 10 covering one surface or both surfaces of the substrate 20. According to this battery separator, since the aliphatic polycarbonate containing layer 10 covering one surface or both surfaces of the substrate 20 is provided, it is possible to reliably prevent or suppress deterioration of battery characteristics due to at least overdischarge. In addition, since the substrate 20 constitutes the battery separator 100 together with the aliphatic polycarbonate containing layer 10, the mechanical strength as a battery separator can be improved.

The present application provides a polycarbonate-based coating resin composition which exhibits high adhesiveness. The above are achieved by a polycarbonate resin composition which contains (A) a polycarbonate resin that contains a constituent unit represented by general formula (1) and a terminal structure represented by general formula (2) and (B) a polyisocyanate compound, wherein 0.1% by mass or more of the polyisocyanate compound (B) is contained on the basis of the total mass of the polycarbonate resin (A) and the polyisocyanate compound (B). (In formula (1) and formula (2), R.sub.1 to R.sub.3, X, m and n are as defined in the description.)

##STR00001##

The present application provides a polycarbonate-based coating resin composition which exhibits high adhesiveness. The above are achieved by a polycarbonate resin composition which contains (A) a polycarbonate resin that contains a constituent unit represented by general formula (1) and a terminal structure represented by general formula (2) and (B) a polyisocyanate compound, wherein 0.1% by mass or more of the polyisocyanate compound (B) is contained on the basis of the total mass of the polycarbonate resin (A) and the polyisocyanate compound (B). (In formula (1) and formula (2), R.sub.1 to R.sub.3, X, m and n are as defined in the description.)

##STR00001##

An article includes at least two contiguous layers containing a composition that includes a branched polycarbonate, optionally a linear carbonate-containing polymer, and 0 to less than 5 weight percent filler. The composition is characterized by an average mole percent branching of 0.06 to 2.4 mole percent, which is calculated as 100 times moles of branched carbonate units in the branched polycarbonate divided by the sum of moles of linear carbonate units in the branched polycarbonate and the optional linear carbonate-containing polymer. The composition is further characterized by a melt flow rate of 1 to 20 grams per 10 minutes, determined according to ASTM D1238-13 at 300° C. and 1.2 kilogram load. Also described is a method of additive manufacturing utilizing the composition.

An article includes at least two contiguous layers containing a composition that includes a branched polycarbonate, optionally a linear carbonate-containing polymer, and 0 to less than 5 weight percent filler. The composition is characterized by an average mole percent branching of 0.06 to 2.4 mole percent, which is calculated as 100 times moles of branched carbonate units in the branched polycarbonate divided by the sum of moles of linear carbonate units in the branched polycarbonate and the optional linear carbonate-containing polymer. The composition is further characterized by a melt flow rate of 1 to 20 grams per 10 minutes, determined according to ASTM D1238-13 at 300° C. and 1.2 kilogram load. Also described is a method of additive manufacturing utilizing the composition.

Described herein in some examples is a heat dissipation coating composition for an electronic device, which can comprise: a transparent coating layer deposited on a surface of the electronic device, wherein the coating layer comprises: a heat absorber selected from the group consisting of silica aerogel, carbon nanotubes, carbon nanotube aerogel, graphene, graphene aerogel, and combinations thereof, a transparent resin selected from the group consisting of a polyacrylic resin, a polycarbonate resin, a cyclic olefin resin, an epoxy resin, a urethane resin, a silicone resin, a cyanoacrylate resin, a polyester resin, and combinations thereof, and a solvent; and a heat spreader layer deposited at least partially on top of the transparent coating layer or deposited on the surface of the electronic device adjacent to the transparent coating layer, wherein the heat spreader layer comprises: metallic or non-metallic particles selected from the group consisting of copper, aluminum, graphite, carbon nanotube, graphene on a metal, graphene, and combinations thereof.

Described herein in some examples is a heat dissipation coating composition for an electronic device, which can comprise: a transparent coating layer deposited on a surface of the electronic device, wherein the coating layer comprises: a heat absorber selected from the group consisting of silica aerogel, carbon nanotubes, carbon nanotube aerogel, graphene, graphene aerogel, and combinations thereof, a transparent resin selected from the group consisting of a polyacrylic resin, a polycarbonate resin, a cyclic olefin resin, an epoxy resin, a urethane resin, a silicone resin, a cyanoacrylate resin, a polyester resin, and combinations thereof, and a solvent; and a heat spreader layer deposited at least partially on top of the transparent coating layer or deposited on the surface of the electronic device adjacent to the transparent coating layer, wherein the heat spreader layer comprises: metallic or non-metallic particles selected from the group consisting of copper, aluminum, graphite, carbon nanotube, graphene on a metal, graphene, and combinations thereof.