公开(公告)号：US3856714A

公开(公告)日：1974-12-24

申请号：US39525573

申请日：1973-09-07

Applicant: POLAROID CORP

Inventor： MOORE P ,  SIMON M

IPC: C08G69/26 ,  C08G73/02 ,  C08G20/20 ,  C08G33/02

CPC classification number: C08G73/0273 ,  C08G69/26 ,  Y10S526/923

Abstract: Novel polyviologen compounds useful in variable density lightfiltering devices are provided which have repeating units (in oxidized dicationic form) represented by the formula: WHEREIN R1 is propylene or a straight-chain alkylene group having from six to 12 carbon atoms; R2 is -H or a hydrocarbon group having from one to six carbon atoms; Z is a bivalent radical resulting from the removal of both active halogen atoms from an aromatic dihalide or from an aliphatic dicarboxylic acid dihalide having a straight four to eight carbon alkylene chain between terminal carboxylic acid halide groups; and X is an anion.

Abstract translation: 提供了可用于可变密度光过滤装置的新型聚变体化合物，其具有由下式表示的重复单元（以氧化的阳离子形式）：