摘要:
An object of the present invention is to provide a retardation film succeeded in solving those conventional problems, that is, a retardation film insusceptible to color dropout or color shift even under environment of severe temperature or humidity conditions and capable of being produced by a melt film-forming method. The retardation film of the present invention satisfies the relationships of the following formulae (A) and (B): 0.7
摘要:
A retardation film insusceptible to color dropout or color shift even under environment of severe temperature or humidity conditions and capable of being produced by a melt film-forming method. The retardation film is obtained by molding at least one polymer selected from polycarbonate and polyester carbonate each having a glass transition temperature of 110 to 180° C. and satisfies the relationships of the following formulae (A) and (B): 0.7
摘要:
The polycarbonate resin of the present invention comprises a structural unit derived from a dihydroxy compound represented by a specific formula (1), a structural unit derived from a dihydroxy compound represented by a specific formula (2), and a structural unit derived from a dihydroxy compound represented by any one of specific formulae (3) to (6), wherein the content of structural units derived from dihydroxy compounds represented by the specific formulae (3) to (6) is within a specific range based on the total of structural units derived from dihydroxy compounds in the polycarbonate resin.
摘要:
A polycarbonate resin composition (X), comprises: (A) a polycarbonate resin containing (a) a structural unit derived from a dihydroxy compound having a moiety represented by the following formula (1) in a part of a structure; and (B) an aromatic polycarbonate resin, wherein a reduced viscosity of the aromatic polycarbonate resin (B) is 0.55 dl/g or less, a proportion of the aromatic polycarbonate resin (B) in the polycarbonate resin composition (X) is 30 wt % or more, and a total light transmittance of the polycarbonate resin composition (X) is 90% or less: CH2—O (1).
摘要:
The invention provides a glittering resin composition which includes: a polycarbonate resin that contains structural units derived from a dihydroxy compound having the portion represented by the following general formula (1) as a part of the structure thereof; and glittering particles in an amount of 0.1 parts by weight or more and 10 parts by weight or less per 100 parts by weight of the polycarbonate resin, wherein the glittering particles are inorganic particles (excluding metal particles) coated with a metal or a metal oxide or are metal particles: provided that a case where the portion represented by general formula (1) is a part of —CH2—O—H is excluded.
摘要:
A polycarbonate resin composition including a carbonate structural unit (X) derived from an aromatic dihydroxy compound represented by the following formula (1), a carbonate structural unit (Y) derived from an aromatic dihydroxy compound represented by the following formula (2), and a carbonate structural unit (Z) derived from an aromatic dihydroxy compound represented by the following formula (3). A molar ratio of the content of the carbonate structural unit (Y) to the carbonate structural unit (X) is 0.65 or more, and the content of the carbonate structural units (Y) in 100 mol % of all carbonate structural units of the polycarbonate resin composition is 49 mol % or less.
(R1 and R2 represent a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group. R1 and R2 may be bonded to each other to form a ring)
(W represents —O—, —S—, —SO2—, or —CR3R4—. R3 and R4 represent a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group. R3 and R4 may be bonded to each other to form a ring)
摘要:
A thermoplastic resin composition including a polycarbonate resin with a structural unit (A) represented by the following formula (1), wherein a hydrolysate produced by hydrolyzing the polycarbonate resin contains dihydroxy compounds represented by the following formulae (2) to (4), and a total amount of the dihydroxy compound represented by the formula (3) and the dihydroxy compound represented by the formula (4) in the hydrolysate is 0.85% by mass or more of an amount of the dihydroxy compound represented by the formula (2).
摘要:
A formed product produced by using a thermoplastic resin composition comprising a polycarbonate resin with a repeating unit (A) represented by the following general formula (1) and a repeating unit (B) represented by the following general formula (2). R1 and R2 independently denote a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group. The alkyl groups in R1 and R2 may be bonded together to form a ring. R3 and R4 independently denote a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or a substituted or unsubstituted aryl group. X denotes a single bond or a divalent organic group represented by the following general formula (3). R6 to R9 independently denote a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or a substituted or unsubstituted aryl group. R5 denotes a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group.
摘要:
The present invention relates to a transparent film obtained by molding a polycarbonate resin composition comprising a specific weight of (A) a polycarbonate resin containing (a) a specific structural unit and (b) a specific structural unit, and a specific weight of (B) a resin having a composition different from that of the polycarbonate resin (A), with a specific absolute value of the difference in the glass transition temperature between the resin (B) and the polycarbonate resin (A) and a specific absolute value of the difference in the refractive index, wherein in the transparent film, the ratio of the retardation measured at a wavelength of 450 nm to the retardation measured at a wavelength of 550 nm satisfies a specific formula.
摘要:
The present invention is a method for producing a polycarbonate resin, comprising performing polycondensation through a transesterification reaction by using a catalyst and using a dihydroxy compound and a carbonic acid diester as raw material monomers, and feeding the produced polycarbonate resin to an extruder, wherein the dihydroxy compound contains at least a dihydroxy compound having a moiety represented by formula (1) in a part of the structure, the dihydroxy compound having a moiety represented by formula (1) contains a compound having a cyclic ether structure, and the temperature at the time of feeding the polycarbonate resin to the extruder is from 180° C. to less than 250° C., with the proviso excluding the case where the moiety represented by formula (1) is a part of —CH2—O—H. CH2—O (1)