Provided is an aromatic polycarbonate resin composition with high fluidity, particularly during low shear, and a good color. An aromatic polycarbonate resin composition including: an aromatic polycarbonate resin that has a structural unit expressed by general formula (1); a aliphatic cyclic carbonate that is expressed by general formula (2) and is included at a ratio of 10 ppm-10,000 ppm; an aromatic cyclic carbonate that is expressed by general formula (3); and at least one compound selected from the group consisting of compounds expressed by general formulas (4)-(6), wherein the total content of the aromatic cyclic carbonate and the compound(s) expressed by general formula(s) (4)-(6) is 0.1 mass %-2.0 mass % by bisphenol A-converted value.

##STR00001##

The disclosure concerns healable polycarbonate resins comprising at least about 5 mol % of disulfide units, articles comprising the healable polycarbonate resin, and methods of activating the healable polycarbonate resin by exposing the healable polycarbonate resin to heat or radiation.

A synthetic resin laminated sheet, in which whitening, cracking, and foaming do not occur when thermoforming is carried out, in particular when deep-draw molding is carried out, and defects do not occur during lamination of a hard coating layer; and a molded article obtained by molding the laminated sheet. A synthetic resin laminated sheet has a coating layer, which includes an acrylic resin, laminated on one surface of a substrate layer including a polycarbonate resin in which a monohydric phenol represented by general formula (1) is used as a chain terminator and is obtained by reacting the monohydric phenol with a dihydric phenol and a carbonate binding agent and has a viscosity average molecular weight of 18000-35000. (In the formula, R1 represents a C8-36 alkyl group or a C8-36 alkenyl group. R2-R5 each represent hydrogen, halogen, or an optionally substituted C1-20 alkyl group or C6-12 aryl group). ##STR00001##

A polycarbonate copolymer or copolymerized polycarbonate blend having excellent amine resistance, which has, as main constituent units, (A) constituent units each represented by the following formula (1):

##STR00001##

wherein, in the formula (1), each of R.sup.1 and R.sup.2 is independently a hydrogen atom, a hydrocarbon group having 1 to 9 carbon atoms and optionally containing an aromatic group, or a halogen atom, (B) constituent units each represented by the following formula (2):

##STR00002##

wherein, in the formula (2), each of R.sup.3 and R.sup.4 is independently an alkyl group having 1 to 6 carbon atoms or a halogen atom, and X is a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkylidene group, a sulfur atom, or an oxygen atom, and (C) constituent units each represented by the following formula (3):

##STR00003##

wherein, in the formula (3), W represents a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkylidene group, a sulfur atom, or an oxygen atom, wherein the amount of the constituent units (A) is 5 to 15 mol %, the amount of the constituent units (B) is 20 to 60 mol %, and the amount of the constituent units (C) is 25 to 75 mol %, based on the mole of the all constituent units, and the polycarbonate copolymer or copolymerized polycarbonate blend is excellent in scratch resistance, impact resistance, heat resistance, and amine resistance.

Disclosed are a polycarbonate and a preparation method therefor and an application thereof. The polycarbonate comprises at least one of structural units selected from a structural unit represented by formula (I) and a structural unit represented by formula (II). The polycarbonate provided by the present application has a high refractive index, and the obtained polycarbonate has a refractive index of 1.673-1.794, which can satisfy performance requirements of polycarbonate as an optical resin in optical components.

##STR00001##

The present disclosure relates to a polycarbonate and a preparation method thereof, which has a novel structure with an improvement in weather resistance and refractive index, while having excellent mechanical properties.

Provided are a copolycarbonate having superior weather resistance as well as excellent mechanical properties, and a preparation method thereof.

A bisphenol polyether oligomer composition comprising greater than 90 wt. % of an oligomer of the formula ##STR00001## wherein R.sup.a, R.sup.b, and R.sup.c are each independently a C.sub.1-12 alkyl, C.sub.1-12 alkoxy, or C.sub.1-12 alkylarylene, each X.sup.a is independently a single bond, O, S, S(O), S(O).sub.2, C(O), or a C.sub.1-18 organic group, G is H or ##STR00002##
p, q, and t are each independently integers of 0 to 4, n is 1 to 10; and wherein the bisphenol polyether oligomer composition comprises: a total halide content of less than 1000 ppm, less than 1000 ppm of CH.sub.2OH groups, less than 5 wt. % cyclic oligomers, and less than 100 ppm of a bisphenol of the formula ##STR00003## wherein R.sup.a, R.sup.b, X.sup.a, p and q are the same as in the oligomer.

The present invention relates to compounds of the formula (I) where X is selected from the group consisting of a single bond, O, N(C.sub.1-C.sub.4)-alkyl, NAr.sup.1, CR.sup.5R.sup.6, S, S(O) and SO.sub.2; Z.sup.1 and Z.sup.2 are independently selected from hydrogen, -Alk-OH, CH.sub.2Ar.sup.2CH.sub.2OH, -Alk-C(O)OR.sup.x, CH.sub.2Ar.sup.2C(O)ORx and C(O)Ar.sup.2C(O)OR.sup.x, where R.sup.x is selected from the group consisting of hydrogen, phenyl, benzyl and C.sub.1-C.sub.4-alkyl; R.sup.1 and R.sup.2 are independently selected from the group consisting of optionally substituted mono- or polycyclic aryl having from 6 to 26 carbon atoms as ring members and optionally substituted mono- or polycyclic hetaryl having a total of 5 to 26 atoms as ring members, R.sup.5 is selected from the group consisting of hydrogen, C.sub.1-C.sub.4-alkyl and a radical Ar.sup.1; R.sup.6 is selected from the group consisting of hydrogen and C.sub.1-C.sub.4-alkyl; Alk is C.sub.2-C.sub.4-alkandiyl; provided that R.sup.1 and R.sup.2 are not both phenyl, if R.sup.3 and R.sup.4 are both hydrogen. The present invention also relates to use of the compounds of the formula (I) as defined herein as a monomer for producing thermoplastic resins comprising a structural unit represented by formulae (II) where # represents a connection point to a neighboring structural unit; and where X, Z.sup.1a, Z.sup.2a, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined herein, and to such thermoplastic resins. The present invention also relates optical devices made of a thermoplastic resin comprising a structural unit represented by formulae (II) as defined herein.

##STR00001##

Compounds and use of the compounds for formula (I)

##STR00001## where X is selected from the group consisting of a single bond, O, N(C.sub.1-C.sub.4)-alkyl, NAr.sup.1, CR.sup.5R.sup.6, S, S(O) and SO.sub.2; Z.sup.1 and Z.sup.2 are independently selected from hydrogen, -Alk-OH, CH.sub.2Ar.sup.2CH.sub.2OH, -Alk-C(O)OR.sup.x, CH.sub.2Ar.sup.2C(O)OR.sup.x and C(O)Ar.sup.2C(O)OR.sup.x, where R.sup.x is selected from the group consisting of hydrogen, phenyl, benzyl and C.sub.1-C.sub.4-alkyl; R.sup.1 and R.sup.2 are independently selected from the group consisting of optionally substituted mono- or polycyclic aryl having from 6 to 26 carbon atoms as ring members and optionally substituted mono- or polycyclic hetaryl having a total of 5 to 26 atoms as ring members, R.sup.5 is selected from the group consisting of hydrogen, C.sub.1-C.sub.4-alkyl and a radical Ar.sup.1; R.sup.6 is selected from the group consisting of hydrogen and C.sub.1-C.sub.4-alkyl; Alk is C.sub.2-C.sub.4-alkandiyl; provided that R.sup.1 and R.sup.2 are not both phenyl, if R.sup.3 and R.sup.4 are both hydrogen.