公开(公告)号：US3640713A

公开(公告)日：1972-02-08

申请号：US3640713D

申请日：1968-10-30

Applicant: POLAROID CORP

Inventor： BUCKLER SHELDON A ,  LAMBERT RONALD F

IPC: G03C5/30 ,  G03C8/06 ,  G03C5/54

CPC classification number: G03C5/3021 ,  G03C8/06

Abstract: Tertiary organic phosphines containing a hydroxyl and/or an amino-substituted phenyl group are used as silver halide developing agents in photographic processing compositions which find particular utility in diffusion transfer photographic techniques.

公开(公告)号：US3644530A

公开(公告)日：1972-02-22

申请号：US3644530D

申请日：1968-10-30

Applicant: POLAROID CORP

Inventor： BLOOM STANLEY M ,  LAMBERT RONALD F

IPC: C07F9/50 ,  G03C1/34 ,  G03C5/30 ,  C07F9/28

CPC classification number: C07F9/5022 ,  G03C1/34 ,  G03C5/3021

Abstract: ORGANIC PHOSPHINES CONTAINING A DIHYDROXYPHENYL SUBSTITUENT ARE PREPARED BY REACTING P-BENZOQUINONE AND A PRIMARY OR SECONDARY ORGANIC PHOSPHINE.

公开(公告)号：US3594169A

公开(公告)日：1971-07-20

申请号：US3594169D

申请日：1969-01-21

Applicant: POLAROID CORP

Inventor： BLOOM STANLEY M ,  LAMBERT RONALD F

IPC: G03C8/36 ,  G03C5/54

CPC classification number: G03C8/365

Abstract: WATER-SOLUBLE TERTIARY ALIPHATIC PHOSPHINES ARE USED AS SILVER HALIDE SOLVENTS IN PHOTOGRAPHIC PROCESSING COMPOSITIONS HAVING A PH IN THE RANGE OF ABOUT 4 TO 9. IN A PREFERRED EMBODIMENT, COMPOSITIONS ARE PROVIDED WHICH FIND PARTICULAR UTILITY IN CARRYING OUT DIFFUSION TRANSFER PHOTOGRAPHIC PROCESS AT NEUTRALITY.