NONTOXIC FOOD COLOURANT

1485846 Food colourings DYNAPOL 19 Nov 1974 [30 Nov 1973] 50124/74 Heading C3P [Also in Divisions A2 and C6] Non-toxic food colourings have the general structure M-(NR-SO 2 -K) z in which M is a non-degradable, non-digestable organic polymer backbone of M.W. at least 10,000 and of such molecular dim...

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Bibliographische Detailangaben
Hauptverfasser:	JOSEF RUDINGER, DANIEL J. DAWSON
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES BEER BIOCHEMISTRY CHEMISTRY COMPOSITIONS OR TEST PAPERS THEREFOR CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL ORENZYMOLOGICAL PROCESSES DYES ENZYMOLOGY FOODS OR FOODSTUFFS FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J HUMAN NECESSITIES LAKES MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEICACIDS OR MICROORGANISMS METALLURGY MICROBIOLOGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS MUTATION OR GENETIC ENGINEERING NATURAL RESINS ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS POLISHES PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL PROCESSES OF PREPARING SUCH COMPOSITIONS SPIRITS THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT THEIR TREATMENT, NOT COVERED BY OTHER CLASSES VINEGAR WINE
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Beschreibung
Zusammenfassung:	1485846 Food colourings DYNAPOL 19 Nov 1974 [30 Nov 1973] 50124/74 Heading C3P [Also in Divisions A2 and C6] Non-toxic food colourings have the general structure M-(NR-SO 2 -K) z in which M is a non-degradable, non-digestable organic polymer backbone of M.W. at least 10,000 and of such molecular dimensions that the colouring does not pass through the mucosa of the gastrointestinal tract, K is an optically chromophore group, z is a positive integer, R is H or a C 1-6 hydrocarbon group, and NR-SO 2 is a sulphonamido group linking M to K and which is oriented with its NR group pendant from, but attached to, M. In the examples, the polymer backbone is derived from polyacrylic acid, and the following reaction sequence is used: (i) polyacrylic acid is treated with hydrazoic acid to effect, via the Schmidt rearrangement, production of an acrylic acid/vinyl amine copolymer, which is (ii) reacted with either N-acetylsulphanilyl chloride or 4-acetamido-1-naphthalene sulphonyl chloride, the product being (iii) hydrolysed to release free amine groups, (iv) diazotized, and (v) linked with a colouring substance selected from the following: Schaeffer's salt (orange), Pyrazolone T (yelloworange), 2-naphthol-3,6-disulphonic acid (red) or 1,8 - dihydroxynaphthalene - 3,6 - disulphonic acid (deep violet).