Patent ID: 11879097
Assignee: TOKUYAMA CORPORATION
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 3:
4. The photochromic compound according to claim 1, wherein:
the oligomer chain group A comprises formulae (5a) to (5d), or a combination of these groups:, wherein:
R10 represents a linear or branched alkylene group having 1 to 20 carbon atoms, and when the compound has plural R10's in one molecule, R10's may be the same or different;
n indicates the recurring unit of the oligomer chain group A, and is an integer of 3 to 200, the divalent groups in plural recurring units may be the same as or different from each other;
L represents a divalent bonding group, and is a group represented by the following formula (6):, wherein:
R13 represents a divalent group, and is a linear or branched alkylene group having 1 to 20 carbon atoms, a cycloalkylene group having 3 to 12 ring carbon atoms and optionally having a substituent, an arylene group having 6 to 12 ring carbon atoms and optionally having a substituent, or a heterocyclic group having 3 to 12 ring atoms and optionally having a substituent; R14 represents a divalent group, and is a linear or branched alkylene group having 1 to 20 carbon atoms, a cycloalkylene group having 3 to 12 ring carbon atoms and optionally having a substituent, or an arylene group having 6 to 12 ring carbon atoms and optionally having a substituent;
R15 represents a divalent group, and is a linear or branched alkylene group having 1 to 20 carbon atoms, a cycloalkylene group having 3 to 12 ring carbon atoms and optionally having a substituent, or an arylene group having 6 to 12 ring carbon atoms and optionally having a substituent:
X1 and X2 each represent a divalent group, and is independently a direct bond, O, S, an amino group, a substituted amino group, a (thio)amide group, or a (thio)ester group;
d represents an integer of 0 to 50, e represents an integer of 0 to 50, f represents an integer of 0 to 50;
when d is 2 or more, plural R13 may be the same as or different from each other,
when e is 2 or more, plural divalent groups of the unit of e may be the same as or different from each other,
when f is 2 or more, plural divalent groups of the unit of f may be the same as or different from each other;
the substituent of the group optionally having a substituent may be the alkenyl group having 10 to 30 carbon atoms, or a group having an alkenyl group having 10 to 30 carbon atoms at the terminal thereof;
plural L's may be the same as or different from each other;
the broken line indicates a bond to the indenonaphthopyran moiety;
t indicates the number of the oligomer chain groups A, and is an integer of 1 to 10;
when t is 1, R11 is an alkenyl group having 10 to 30 carbon atoms, a hydrogen atom, or an alkyl group having 1 to 20 carbon atoms;
when t is 2, R11 is a bond, or a divalent organic residue;
when t is 3 to 10, R11's each are an organic residue having the same valence as the number t;
and wherein R12 in the formula (5d) represents a linear or branched alkyl group having 1 to 20 carbon atoms, or an aryl group having 6 to 14 carbon atoms, and when the compound has plural R12's in one molecule, R12's may be the same or different.