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| Number | Title | Issue Date |
| 4532128 | Quaternary ammonium group-containing polymers having antimicrobial activity Polymeric quaternary ammonium compounds having recurring vinylbenzyl ammonium units are disclosed. The quaternary ammonium units preferably have 2 alkyl substituents of 1 to 4 carbons and 1 alkyl substituent of 4 to 12 carbons. These materials have antimi... | 07/30/1985 |
| 4526933 | Polymeric active methylene compounds, their preparation and their use in azo polymers Polymer compounds which have recurring ##STR1## units are disclosed. These polymers provide active methylene groups which serve as points of attachment for organic groups--particularly azo functionality-containing groups. These azo links can be cleav... | 07/02/1985 |
| 4490557 | Ethylidene bisformamide, its preparation and use in preparing poly(vinylamine) and salts thereof Ethylidene bisformamide is prepared by reacting, at elevated temperatures, dry acetaldehyde and formamide in the presence of an acidic catalyst and an ammonia scavenger such as acetic anhydride. The bisformamide is recovered as a bottoms products of high ... | 12/25/1984 |
| 4489197 | Polymeric active methylene compounds Polymeric compounds which have recurring ##STR1## units, wherein X is N or O, R1, R2 and R3 are hydrogens or lower alkyls and R4 is ##STR2## and aromatic amine or an aromatic hydrazine which provides X... | 12/18/1984 |
| 4482680 | Quaternary ammonium group-containing polymers having antimicrobial activity Polymeric quaternary ammonium compounds having recurring vinylbenzyl ammonium units are disclosed. The quaternary ammonium units preferably have 2 alkyl substituents of 1 to 4 carbons and 1 alkyl substituent of 4 to 12 carbons. These materials have antimi... | 11/13/1984 |
| 4454290 | Stevioside analogs Analogs of the glycoside stevioside are disclosed. These materials have the formula ##STR1## wherein R is a simple physiologically acceptable noncarbohydrate polar organic group. The analogs are sweet and find use as sweeteners.... | 06/12/1984 |
| 4404367 | Glucosubstituented diterpenoid sweeteners Glucosubstituented diterpenoid compounds analogous to stevioside, rebaudosides C and A, steviolmonoside and steviolbioside but having their gluco units substituted with simple monoglycosidic polar groups and optionally having their C19 carboxyl... | 09/13/1983 |
| 4403072 | Alkoxyethanols as solvents for coupling sulfonyl halides to polymeric amines 2-Alkoxyethanols, particularly 2-methoxyethanol and 2-ethoxyethanol, aqueous solvents based thereon are disclosed as advantageous solvents for the liquid phase coupling of sulfaryl halides to polymeric amines.... | 09/06/1983 |
| 4402990 | Steviolmonoside analogs Analogs of the glycoside stevioside are disclosed. These materials have the formula ##STR1## wherein R is a simple physiologically acceptable noncarbohydrate polar organic group. The analogs are sweet and find use as sweeteners.... | 09/06/1983 |
| 4397997 | Ultraturbulent coupling of polymeric diazonium salts Polymeric diazonium salts are coupled to coupling agents without complications of precipitation by injecting a diazonium salt solution into a substantial volume excess of the coupling agent solution immediately adjacent to the impellor of a centrifugal pu... | 08/09/1983 |
| 4393175 | Process for the continuous diazotization of water-soluble polymeric amines An improvement in the diazotization of polymeric amines is disclosed that minimizes crosslinking problems. Solutions of nitrite ion and polymeric amine are concurrently continuously fed at controlled rates to a turbulently agitated limited volume mixing z... | 07/12/1983 |
| 4393174 | Base hydrolysis of pendant amide polymers Pendant amide polymers, especially polymers containing N-vinylacetamide, N-alkyl-N-vinylacetamide, or N-vinyl-formamide units, are hydrolyzed to pendant amine polymers, especially vinylamine polymers by contact with strong aqueous base at elevated tempera... | 07/12/1983 |
| 4386206 | Tertiary amides as solvents in anthrapyridone syntheses Anthrapyridones are prepared in high yields from 1-aminoanthraquinones or 1-alkylaminoanthraquinones and phenylacetyl halides when tertiary amides are employed as reaction media. The phenylacetyl halides can be generated in situ from phenylacetic acid and... | 05/31/1983 |
| 4382800 | Free amine-containing polymeric dyes Soluble polymeric colorants composed of free amine groups and chromophoric groups covalently bonded to an organic backbone are disclosed. The number of free amine groups is not less than one-half the number of chromophoric groups. The colorants are charac... | 05/10/1983 |
| 4381185 | Water-fast printing with water-soluble dyes Water-fast printing of paper stock using a colorant solution containing water-soluble polymeric dyes is accomplished by a three step process. Step 1 is selecting a paper stock characterized as containing at least 250 ppm by weight of cation, particularly ... | 04/26/1983 |
| 4381402 | Steviol compounds Analogs of the glycoside stevioside are disclosed. These materials have the formula ##STR1## wherein R1 and R2 are as follows: and M+ is a physiologically acceptable alkali metal cation.... | 04/26/1983 |
| 4375357 | Water-soluble fast polymeric black colorant, its preparation and use in dyes and inks A family of polymeric black colorants is disclosed. The subject colorants are composed of an organic polymer backbone comprised of a plurality of aromatic rings from which depend via azo groups a plurality of chromophore units having the structure ##... | 03/01/1983 |
| 4353889 | Rebaudioside analogs Analogs of the glycoside rebaudioside A are disclosed. These materials have the formula ##STR1## wherein R is a simple physiologically acceptable noncarbohydrate polar organic group. The analogs are sweet and find use as sweeteners.... | 10/12/1982 |
| 4339237 | Free amine-containing polymeric dyes Soluble polymeric colorants composed of free amine groups and chromophoric groups covalently bonded to an organic backbone are disclosed. The number of free amine groups is not less than one-half the number of chromophoric groups. The colorants are charac... | 07/13/1982 |
| 4332830 | Sweetening with stevioside analogs Analogs of the glycoside stevioside are disclosed. These materials have the formula ##STR1## wherein R1 and R2 are as follows: and M+ is a physiologically acceptable alkali metal cation.... | 06/01/1982 |
| 4316918 | Products including edibles colored with polymeric red colors Polymeric red colors having the structure ##STR1## wherein R1 and R2 are independently selected from among hydrogen, halos, lower alkyls, lower alkoxies, nitros, and sulfonates, R3 is selected from hydrogens, alkyls a... | 02/23/1982 |
| 4309543 | Process for preparing cyclic amides A process for preparing cyclic amides from an optionally substituted acetic acid and an aromatic aminocarbonyl compound is disclosed. The process employs a promoter comprising tetravalent titanium or silicon and a pyridine compound to effect formation of ... | 01/05/1982 |
| 4302399 | Acetylation of crude reaction products containing polymeric colorants Acetylation of residual primary and secondary alkyl amine groups in polymeric colorants, when said colorants are in the form of a crude preparation reaction mixture, is disclosed. The acetylation improves the colorants' water solubility.... | 11/24/1981 |
| 4298595 | Pharmaceutical preparations containing a polymeric agent for releasing 5-aminosalicylic acid or its salts into the gastrointestinal tract An intestinal anti-inflammatory preparation comprising a polymeric agent for releasing 5-aminosalicylic acid or its salts is disclosed. The polymeric agent comprises a nonabsorbable pharmacologically acceptable organic polymer backbone containing aromatic... | 11/03/1981 |
| 4290957 | Flavonone precursors for alpha amino acid dihydrochalcones Dihydrochalcones of the formula ##STR1## are disclosed wherein X is H or OH and R is a lower alkyl. These materials are useful as sweeteners for edibles. A process for preparing these compounds using a novel intermediate is disclosed as are acid and ... | 09/22/1981 |
| 4279662 | Polymeric red colors Polymeric red colors having the structure ##STR1## wherein R1 and R2 are independently selected from among hydrogen, halos, lower alkyls, lower alkoxies, nitros, and sulfonates, R3 is selected from hydrogens, alkyls a... | 07/21/1981 |
| 4275002 | Process for preparing polymeric colorants having a poly(vinylamine) backbone Polymeric colorants are prepared by the process of (a) reacting acetaldehyde and acetamide in a mole ratio of 1:2-4 with an acid catalyst to form ethylidene-bis-acetamide, (b) cracking the ethylidene-bis-acetamide to vinylacetamide, (c) polymerizing the ... | 06/23/1981 |
| 4267165 | Comestibles sweetened with alpha amino acid dihydrochalcones Dihydrochalcones of the formula ##STR1## are disclosed wherein X is H or OH and R is a lower alkyl. These materials are useful as sweeteners for edibles. A process for preparing these compounds using a novel intermediate is disclosed as are acid and ... | 05/12/1981 |
| 4260714 | Acetamidoethylene copolymers Copolymers of acetamidoethylene are disclosed. These materials have randomly distributed units represented by the formula ##STR1## wherein R is one or more radicals selected from the group ##STR2## and the C1 to C6 carboxyl... | 04/07/1981 |
| 4258189 | Process for preparing orange polymeric colorants A process for preparing a family of orange polymeric colorants having a plurality of units of the chromophore ##STR1## is disclosed. R1 and R2 are hydrogens, lower alkyls or alkoxies, nitros, halos or sulfonates, R3 i... | 03/24/1981 |
| 4255548 | Ethylene-vinylamine copolymers Copolymers of ethylene and vinylamine are disclosed as are methods for their production. The disclosed copolymers find application primarily as flocculants.... | 03/10/1981 |
| 4250327 | Polymeric yellow colorant A group of water-soluble polymeric yellow colors and their preparation is disclosed. These colors comprise a plurality of units of a chromophore of the formula ##STR1## wherein M+ is a pharmaceutically acceptable monovalent cation att... | 02/10/1981 |
| 4249007 | Anthraquinone colorants Red colors having the anthraquinone structure ##STR1## are disclosed wherein R1 and R2 are independently selected from among hydrogen, halos, lower alkyls, lower alkoxies, nitros, and sulfonates, and R3 and R4 | 02/03/1981 |
| 4238579 | Vinylamine aromatic copolymers and salts thereof Vinylamine copolymers are disclosed. These copolymers have randomly distributed repeating units represented by the formula ##STR1## wherein Ar is optionally substituted phenyl, the substituents independently selected from C1 to C6 | 12/09/1980 |
| 4233328 | Edible materials colored with polymeric yellow colorant A group of water-soluble polymeric yellow colors and their preparation is disclosed. These colors comprise a plurality of units of a chromophore of the formula ##STR1## wherein M+ is a pharmaceutically acceptable monovalent cation, at... | 11/11/1980 |
| 4226804 | Alpha amino acid dihydrochalcones Dihydrochalcones of the formula ##STR1## are disclosed wherein X is H or OH and R is lower alkyl. These materials are useful as sweeteners for edibles. A process for preparing these compounds using a novel intermediate is disclosed as are acid and ba... | 10/07/1980 |
| 4225432 | Efficiency of ultrafiltration purification of solutions of polymeric colorants by inorganic base addition 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 dur... | 09/30/1980 |
| 4217214 | High molecular weight polyvinylamine hydrochloride as flocculant High molecular weight polyvinylamine hydrochloride for use as a flocculating agent in waste water systems is disclosed.... | 08/12/1980 |
| 4206240 | Polymeric aminoanthrapyridine orange colors 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## wh... | 06/03/1980 |
| 4205151 | Polymeric N-substituted maleimide antioxidants 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 preparatio... | 05/27/1980 |
