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| Number | Title | Issue Date |
| 4052373 | Process for hardening gelatin A process for hardening, e.g., gelatin, in particular, a gelatin used for photographic light-sensitive materials, which comprises treating gelatin, a non-gelatin hydrophilic high molecular weight material containing primary or secondary amino groups or a ... | 10/04/1977 |
| 4049684 | Process for the separation of fat from animal skins Raw or partially cooked animal skins containing fats and oils from which the surface hair has been removed are ground into particles and fed into the end of a perforated conduit that has a conveyor screw therein which progressively decreases in conveying ... | 09/20/1977 |
| 4047957 | Process of hardening protein-containing photographic layers with a mixture of a carboxyl group-activating, low molecular weight compound and a carboxyl group-activating polymer A process is described for the hardening of a protein-aceous layer or layers, more especially of gelatin layers, e.g. gelatin layers in a photographic material, by the application on this layer or layers of a coating composition comprising a low molecular... | 09/13/1977 |
| 4043995 | Process for crosslinking hydrophilic colloids The present invention relates to a process for crosslinking hydrophilic colloids, preferably gelatine and most preferably gelatine present in a photographic material. A 1,3,5-triazine compound containing an NC--N- -- substituent bound to the tr... | 08/23/1977 |
| 4043952 | Surface treatment process for improving dispersibility of an absorbent composition, and product thereof The aqueous dispersibility of a water-absorbent composition of matter is improved by a surface treatment which ionically complexes the surface thereof to a moderate degree. A dispersion is formed comprising a water-absorbent composition of matter based on... | 08/23/1977 |
| 4043996 | Gelatin manufacture-peroxide liquefaction process Gelatin is extracted from collagen-containing substances by liquefaction with hydrogen peroxide as the sole lyotropic agent. Collagen-bearing tissue is liquefied through agitation with hydrogen peroxide at about 45°-60° C. for from about 4 to about 24 h... | 08/23/1977 |
| 4043818 | Process for hardening photographic layers with carbodiimide compounds containing sulphobetaine groups As quick-acting hardeners for protein-containing photographic layers, which do not adversely affect the sensitizers and color couplers in the photographic materials, carbodiimide compounds containing sulphobetaine groups are used.... | 08/23/1977 |
| 4039520 | Gelatin hardening process A process for hardening gelatin which comprises reacting photographic gelatin with a compound of the general formula wherein A is CH2 =CH--, CH2 =C(R1)--, CH2 (R1)--CH2 -- or CH2 (R | 08/02/1977 |
| 4035319 | Non-migratory hardeners A copolymer soluble in aqueous and/or partially aqueous solution and having a chain comprising the entities A and B defined below: ##STR1## WHEREIN: M is hydrogen or methyl; R is an alkylene group comprising less than six carbon atoms or a substitute... | 07/12/1977 |
| 4028320 | Method of hardening gelatin using sulfonyl compounds A method of hardening gelatin which comprises adding thereto a compound of the following general formula (I): ##STR1## in which Y1 is CH2 =CH--, ClCH2 --CH2 --, BrCH2 --CH2 --, CH... | 06/07/1977 |
| 4017473 | Hardening of proteinaceous materials Proteinaceous materials, especially gelatin, are hardened by incorporating therein at least one bis-epoxy compound corresponding to one of the formula: ##STR1## wherein: X represents a 1,4-piperazinylene group or a monomethyl or dimethyl-substit... | 04/12/1977 |
| 4016340 | Hydroxyl-containing polymers having aminimide groups attached thereto through an ether linkage This invention relates to novel polymers containing a plurality of hydroxyl groups having aminimide groups attached thereto through an ether linkage and to methods for attaching said aminimide groups onto said polymers containing a plurality of hydroxyl g... | 04/05/1977 |
| 4014862 | Production of hardened gelatin layers by the addition of quaternary carbamoyl pyridinium compounds The present invention relates to the production of hardened gelatin layers by means of quaternary carbamoyl pyridinium compounds. Preferably this method is used for the hardening of silver halide photographic material.... | 03/29/1977 |
| 4013468 | Method of hardening a protein-containing layer of a silver halide photographic material with an alkyl ester of 1,2-dihydroquinoline-N-carboxylic acid A process for hardening protein-containing, preferably gelatin-containing, photographic layers wherein as hardeners unsubstituted or substituted esters of 2-substituted, 1,2-dihydroquinoline-N-carboxylic acids and/or unsubstituted or substituted esters of... | 03/22/1977 |
| 4007163 | Method for hardening gelatin A method for hardening gelatin is disclosed wherein the gelatin is treated with a hardener which contains a combination of two compounds. One of the compounds contains at least two meslyoxy groups in the molecule while the second compound contains at leas... | 02/08/1977 |
| 4006220 | Compositions and methods useful for repairing depressed cutaneous scars Compositions useful for the repair of depressed cutaneous scars comprising at least one fibrin stabilizer and plasma in an amount to provide sufficient fibrin within a cavity formed under the scar. The fibrin stabilizer or a mixture thereof is present in ... | 02/01/1977 |
| 4001288 | Magnetic organo-iron compounds An organo-iron compound or complex, having an X-ray diffraction pattern similar to that of magnetite and containing from 25 to 50 per cent or more iron, is water soluble and exhibits strongly ferromagnetic properties both as a solid and in aqueous solutio... | 01/04/1977 |
| 4001201 | Process for crosslinking hydrophilic colloids using vinyl substituted, SO2 containing, amine salt The present invention relates to a process for crosslinking hydrophilic colloids which contain amino-, imino- and/or hydroxyl groups. Compounds of the formula ##EQU1## are used as crosslinking agents. In the formula V and W denote hydrogen atoms... | 01/04/1977 |
| 3992366 | Process for crosslinking hydrophilic colloids A process for crosslinking hydrophilic colloids which contain amino, imino and/or hydroxyl groups is provided. The crosslinking agents correspond to the formula ##SPC1## Wherein A is hydrogen, hydroxyl, halogen, acylamino, an immonium-ether radical, ... | 11/16/1976 |
| 3985722 | Process for preparing N-higher aliphatic acyl derivatives of amino acids, peptides or proteins A mixed acid anhydride consisting of higher fatty acid having 6 to 22 carbon atoms and sulfuric anhydride is reacted with amino acids, peptides or proteins in the presence of a base to form N-higher aliphatic acyl derivatives of amino acids, peptides or p... | 10/12/1976 |
| 3984391 | Modified gelatin with a reduced gel-melting point The invention relates to a modified gelatin with a reduced gel-melting point. The gel-melting point of the modified gelatin is reduced by converting at least 6% of the optically active amino acid residues in the gelation from this original L-form to D-for... | 10/05/1976 |
| 3981857 | Gelatin hardening process A process for hardening gelatin which comprises reacting photographic gelatin with a compound of the general formula ##SPC1## Wherein R1 and R2 individually are halogen, an aryloxy group which may have substituents, or an arylthio gr... | 09/21/1976 |
| 3977881 | Acylurea compounds This invention relates to new compounds of the formula ##EQU1## M IS 1 OR 2, N IS 2, 3, 4, 5 OR 6, Z represents a polyamine radical containing a basic tertiary or a quaternary nitrogen atom. The compounds of formula (m) an useful as crosslinking agen... | 08/31/1976 |
| 3978122 | Acylurea compounds The present invention relates to the new compounds of the formula wherein n is an integer having a value of 1 to 100 and R represents a radical of the formula Cl--H2 C--CH2 --CO--NH--CO--NH-- or preferably H2 C=CH--CO--NH--CO--... | 08/31/1976 |
| 3954725 | Alcohol soluble acylated protein hydrolyzate reaction products An acyl amide product of reaction of polypeptides useful in cosmetics such as hair sprays because it is alcohol soluble and forms continuous films which are insoluble in water of neutral or acidic pH, is prepared by hydrolyzing proteins with either alkali... | 05/04/1976 |
| 3951940 | Method of producing a hardened gelatin layer using aqueous solution of a 2-halogeno pyridinium compound This invention relates to the hardening of gelatin layers. The gelatin is heated with an aqueous solution of a 2-halogeno pyridinium compound.... | 04/20/1976 |
| 3943019 | Optical filter Optical wedge filter comprising a coloured gelatine layer on a flexible transparent support and a flexible transparent covering foil bonded the gelatine layer wherein the thickness of the coloured gelatine layer increases stepwise or continuously.... | 03/09/1976 |
