In situ modification of gelatin carboxyl groups

Details In situ modification of gelatin carboxyl groups In situ modification of gelatin carboxyl groups

1993-12-22

1995-02-21

Baxter, Janet C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430539, 430621, 430640, 530354, G03C 1005, G03C 1494, G03C 130, G03C 176

Patent

active

053914775

ABSTRACT:
A photographic element comprising a modified gelatin whereby the modification results in carbamoyl groups by forming peptide bonds using fast-acting hardener. The derivatization involves initial reaction with a carboxyl activator followed by addition of a substituted amine thereby forming an amide linkage on the polypeptide chain. The resulting gelatin and photographic elements comprising such gelatin have a decreased propensity for water absorption without the loss of sensitometric properties.

REFERENCES:
patent: 3645743 (1972-02-01), Mucke et al.
patent: 4939079 (1990-07-01), Wolff et al.
patent: 4978607 (1990-12-01), Roche et al.
patent: 5087694 (1992-02-01), Dumas et al.
patent: 5316902 (1994-05-01), Specht et al.
T886,014 Defensive Publication Published May 11, 1971 886 OG 215 Gelatin With Improved Chemical Setting Properties.
Derwent Abstract, Nitta Gelatin Inc., Improved Alkali-Treated Gelatin and Preparation Thereof, JP2305876, Abstract, Dec. 19, 1990.
T. D. Weatherill, R. W. Henning and K. A. Smith, Solid State Structural Characterization of Gelatin Crosslinked with a Variety of Hardeners, Journal of Photographic Science, Nos. 5/6, Bath, GB, 40 (1992), 220-221, Sep. 15-20, 1991.

Affiliated with

Also associated with

Rating

In situ modification of gelatin carboxyl groups does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with In situ modification of gelatin carboxyl groups, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and In situ modification of gelatin carboxyl groups will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1929304