Polycarbonate resin and transparent film comprising the same

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.

主权项

1. A polycarbonate resin comprising:
a structural unit derived from a dihydroxy compound represented by the following formula (1), a structural unit derived from a dihydroxy compound represented by the following formula (2), and a structural unit derived from at least one dihydroxy compounds selected from the group consisting of a dihydroxy compound represented by the following formula (3), a dihydroxy compound represented by the following formula (4), a dihydroxy compound represented by the following formula (5) and a dihydroxy compound represented by the following formula (6),wherein:
the content of structural units derived from dihydroxy compounds represented by the following formulae (3) to (6) is from 0.1 wt % to less than 4.5 wt % based on the total of structural units derived from dihydroxy compounds in the polycarbonate resin: wherein each of R1 to R4 independently represents a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 6 to 20 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, each of X1 and X2 independently represents a substituted or unsubstituted alkylene group having 2 to 10, a substituted or unsubstituted cycloalkylene group having 6 to 20 carbon atoms, or a substituted or unsubstituted arylene group having 6 to 20 carbon atoms, and each of m and n is independently an integer of 0 to 5; wherein R5 represents a substituted or unsubstituted cycloalkylene group having 4 to 20 carbon atoms;
HO—CH2—R6—CH2—OH  (4) wherein R6 represents a substituted or unsubstituted cycloalkylene group having 4 to 20 carbon atoms;
H—(O—R7)p—OH  (5) wherein R7 represents a substituted or unsubstituted alkylene group having 2 to 10 carbon atoms, and p is an integer of 2 to 50;
HO—R8—OH  (6) wherein R8 represents a substituted or unsubstituted alkylene group having 2 to 20 carbon atoms, or a group containing a substituted or unsubstituted acetal ring.