Abstract: A plate heat exchanger includes heat transfer plates each of which has openings at four corners thereof, and which are stacked together. The heat transfer plates are partially brazed together such that a first flow passage through which first fluid flows and a second flow passage through which second fluid flows are alternately arranged, with an associated heat transfer plate interposed between the first and second flow passages. The openings at each of the four corners communicate with each other, thereby forming a first header and a second header, the first header allowing the first fluid to flow into and flow out of the first flow passage, the second header allowing the second fluid to flow into and flow out of the second flow passage.

Abstract: To provide a polycarbonate resin laminate having the surface hardness remarkably improved and being excellent in color and impact resistance.

Abstract: To provide a polycarbonate resin laminate having the surface hardness remarkably improved and being excellent in color and impact resistance.

Abstract: The object of the present invention is to provide a polycarbonate resin having an extremely narrow molecular weight distribution, good flowability when melting, and particularly extremely good flowability when melting that does not depend on shear rate. The present invention relates to a polycarbonate resin, characterized in that a value obtained by dividing difference between a logarithmic value log MV9.12 of a melt viscosity (Pa·s) measured at shear rate of 9.12 sec?1 and a logarithmic value log MV1824 of a melt viscosity (Pa·s) measured at shear rate of 1824 sec?, with a capillary rheometer having a die diameter of 1 mm? and an effective length of 30 mmL, by a viscosity average molecular weight Mv calculated by the following equations, viscosity difference/molecular weight ratio, is 2.0×10?5 or less. ?sp/C=[?]×(1+0.28?sp) [?]=1.23×10?4×Mv0.83 (In the above equations, ?sp is a specific viscosity measured at 20° C.

Abstract: A precision product container of the present invention comprises a resin composition as a base material, which comprises a polycarbonate resin and an epoxy compound. Such precision product container can remarkably prevent products contained therein from being contaminated by chlorine and is suitable as a container for a precision product which is free from operational errors of the precision product contained therein when this product is subsequently assembled or processed.

Abstract: A precision product container of the present invention comprises a resin composition as a base material, which comprises a polycarbonate resin and an epoxy compound. Such precision product container can remarkably prevent products contained therein from being contaminated by chlorine and is suitable as a container for a precision product which is free from operational errors of the precision product contained therein when this product is subsequently assembled or processed.

Abstract: A polycarbonate resin having an improved hue is provided, which is suitable for use as a substrate for transfer type optical recording media such as optical disks.

Abstract: A polycarbonate resin having an improved hue is provided, which is suitable for use as a substrate for transfer type optical recording media such as optical disks.

Abstract: Disclosed herein is a polyester composition comprising a polyester and a modified copolymer of ethylene and an .alpha.-olefin prepared by grafting (1) an ester of an .alpha.,.beta.-unsaturated carboxylic acid represented by the formula(I): ##STR1## wherein n is an integer of from 0 to 4; m is an integer of from 1 to 10; R.sup.1 and R.sup.2 respectively represent a hydrogen atom or an alkyl group and R.sup.3 represents a hydrogen atom, an alkyl group or a carboxyl group, or (2) said ester of an .alpha.,.beta.-unsaturated carboxylic acid represented by the formula (I) and n .alpha.,.beta.-unsaturated carboxylic acid or an anhydride thereof with a copolymer of ethylene and an .alpha.-olefin.