Abstract: Polymeric orange colors are disclosed having a noncrosslinked organic polymer backbone to which is covalently bonded a plurality of chromophores having a particular anthrapyridine structure. The colors are represented structurally as ##STR1## wherein R.sub.1 and R.sub.2 are independently selected from among hydrogen, halos, lower alkyls, lower alkoxies, nitros, and sulfonates; R.sub.3 is selected from hydrogen, alkyls and alkylsulfonates; R.sub.5 is a lower alkyl or lower alkyl sulfonate and R.sub.4 is a noncrosslinked organic polymer linking a plurality (k) of said anthrapyridines into a polymeric colorant. The polymeric colorants are especially useful as nonabsorbable orange colorants for edibles.

Abstract: N-substituted maleimide polymers comprising the recurring structural units: ##STR1## wherein R and R' independently are lower alkyl groups of from 1 to 5 carbon atoms and n is an integer of from about 2 to about 2,000, are disclosed. Their preparation as well as the preparation of their monomer precursors and the preferred use of the polymers as antioxidants, particularly nonabsorbable food antioxidants, are also disclosed.

Abstract: Dihydrochalcones of the formula ##STR1## are disclosed wherein M.sup.+ is a cation, X is H or OH, and R is a lower alkyl. These materials are useful as sweeteners for edibles. They may be prepared by electrophilic addition of the 3-sulfo-5,6-dihydroxyhexyl group to the corresponding flavanones, using epoxysultone, and thereafter converting to the dihydrochalcone.

Abstract: Orange colors having the anthrapyridine structure ##STR1## are disclosed wherein R.sub.1 and R.sub.2 are independently selected from among hydrogen, halos, lower alkyls, lower alkoxies, nitros, and sulfonates, R.sub.3 and R.sub.4 are independently selected from hydrogens, alkyls and alkylsulfonates of 1 through 3 carbon atoms and R.sub.5 is a lower alkyl or lower alkyl sulfonate.

Abstract: A generic polymeric agent for releasing 5-aminosalicylic acid or its salts is disclosed which comprises a nonabsorbable pharmacologically acceptable organic polymer backbone containing aromatic rings to which are covalently bonded via azo bonds a plurality of salicylic acid or salicylate salt groups. The azo bonds attach to the salicylates' 5-position carbon. The polymers undergo bacterial cleavage in the mammalian lower bowel to release 5-aminosalicylic acid and/or its salts.

Abstract: The ultrafiltration purification of aqueous solutions of polymeric colorants, wherein low molecular weight impurities are removed in an ultrafiltrate leaving a purified polymeric colorant-bearing retentate, is carried out with improved efficiency when, during at least two diavolumes of ultrafiltration, the salt content of the retentate is maintained above about 1% by weight.

Abstract: Foaming of aqueous solutions containing a polymeric dye can be inhibited by use of glycerol monooleate, glycerol dioleate and mixtures thereof.

Abstract: Red colors having the anthraquinone structure ##STR1## are disclosed wherein R.sub.1 and R.sub.2 are independently selected from among hydrogen, halos, lower alkyls, lower alkoxies, nitros, and sulfonates, and R.sub.3 and R.sub.4 are independently selected from hydrogens, alkyls and alkylsulfonates. Precursors are disclosed as well. In a preferred embodiment R.sub.4 is an alkyl-containing polymer linking a plurality of anthraquinones into a polymeric colorant especially useful as a nonabsorbable colorant for edibles.

Abstract: Ethylsulfonate-alkylamine copolymers are disclosed. These copolymers find special application as intermediates in the preparation of new water-soluble polymeric colorants which are also disclosed, especially water-soluble polymeric colorants for edibles.

Abstract: Ethylidene-bis-acetamide is prepared by the process of contacting a liquid mixture of acetaldehyde and acetamide with a solid cation exchange resin at a temperature of from about 10.degree. C. to about 110.degree. C. The ethylidene-bis-acetamide may later be converted to vinylacetamide, a material useful as a monomer for preparing active polymers and copolymers.

Abstract: Acetylation of residual primary and secondary alkyl amine groups present in the structure of polymeric colorants and the acetylated colorant products are disclosed. The acetylation is a post production step. The acetylation improves the colorants' water solubility.

Abstract: Organic pigment lakes are prepared by adsorption of a high molecular weight or polymeric dye onto suitable substratum or extender therefor. The properties of the resultant polymeric lakes approach those of true pigments, and said lakes exhibit maximized dye loading capacities and are exceptionally free of bleed. Thus, the applicability of lake colors is extended in the various food systems and their use is also permitted as industrial pigments.

Abstract: An improved procedure for the conversion of commercial hesperidin into high-purity, crystalline hesperetin is disclosed. This procedure comprises purifying the crude starting material by insolubles removal and precipitation, followed by cleaving the saccharides with a strong mineral acid in lower primary alkanol. The use of lower alkanol in this transformation facilitates the isolation of a high purity product uncontaminated by resinified sugars.

Abstract: Polymeric colorants comprising a hydrocarbon backbone and attached directly thereto through amine linkages, at least one water-solubilizing group and at least one optically chromophoric group are disclosed. In a preferred embodiment, the backbone is a saturated aliphatic hydrocarbon, the chromophore is an anthraquinone chromophore and the solubilizing group is a sulfonate or sulfamate residue.

Abstract: A new compound, denominated epoxysultone, having the structure ##STR1## is disclosed. The compound is an electrophilic addition agent of broad application which finds especial use in the preparation of new sweetener compounds. An intermediate to epoxysultone is also disclosed.

Abstract: Diolefin-phenolic copolymeric antioxidants having solvent contents below 50 ppm and containing less than 0.3% of materials of molecular weight below 500 Daltons are recovered directly from a crude reaction product by removing catalyst and adjusting the reaction solvent content to 10-50% and thereafter subjecting the product to melt processing under volatilizing conditions at 200.degree.-425.degree. C, 0.1 to 10 mm Hg absolute, a surface area of at least 4 cm.sup.2 /g for from 0.5 to 7.5 minutes and then recovering the purified product.

Abstract: Viscoelastic materials are differently colored in zones with polymric dyes. When a polymeric dye is added to a zone of a viscoelastic material it does not migrate from the zone; thus permitting an essentially permanently multizoned colored product.

Abstract: Edibles which contain water-soluble polymeric colorants having an ethylsulfonate-alkylamine co-polymer backbone.

Abstract: Novel, nonabsorbable antioxidants of the general formula (An).sub.n R wherein An is a means for preventing oxidation of an oxidizable material, R is a means for essentially restricting the absorption of An in a biological environment, .about. is a means for covalently bonding An to R for a prolonged time, and n is at least one. The nonabsorbable antioxidants are useful as stabilizers in oxidizable materials without any substantial absorption of the antioxidant in the biological environment.

Abstract: Polymeric hydroquinones of the structure ##STR1## WHEREIN N IS FROM 3 TO 10,000 INCLUSIVE AND R and R' independently are hydrogen or a lower alkyl, are disclosed, as is the preparation and the use of such materials, especially as nonabsorbable polymeric antioxidants for edible materials.