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US2972606A Expired / Lapsed US ⏱️ 0.0 years remaining

Catalytic aminoethylation of cellulose, cellulose derivatives or polyvinyl alcohol

Assignee: Wyandotte Chemicals Corp
•
Filing: 1956-05-31
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Granted: 1961-02-21
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Expires: 1976-05-31
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Abstract

No abstract record available.

Inventors

  • 👤 Robert J Hartman
  • 👤 Edward J Fujiwara

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 05:05
CPC Classifications
C; C08; C08B; C08B11/00; C08B11/02; C08B11/04; C08B11/14; C08F; C08F8/00; C08F8/30; Y; Y10; Y10S; Y10S8/00; Y10S8/10

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 161 words
A CATALYTIC PROCESS FOR AMINOETHYLATING CELLULOSE AND POLYVINYL ALCOHOL, WHICH COMPRISES, HEATING IN A SUBSTANTIALLY WATER-FREE, LIQUID PHSE SYSTEM TO A TEMPERATURE OF ABOUT 80-140*C. A MEMBER SELECTED FROM THE GROUP CONSISTING OF CELLULOSE AND POLYVINYL ALCOHOL WITH AN AMINOETHYLATING REACTANT SELECTED FROM THE GROUP CONSISTING OF ETHYLENIMINE, 2 - METHYLETHYLENIMINE, 2,2-DIMETHYLETHYLENIMINE, TRIMETHYLETHYLENIMINE, 2 - PHENYLETHYLENIMINE, 2 - (P-OLYL)ETHYLENIMINE, 2-BIPHENYLETHYLERMININE, 2 - (P-AMINOPHENYL)ETHYLENIMINE, 2-(2,4-DINITROPHENYL)ETHYLENIMINE AND THE METHYL ESTER OF P-(CARBOXYPHENYL)-ETHYLENIMINE, IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ALKENYL HALIDES HAVING UP TO AND INCLUDING 8 CARBON ATOMS PER MOLECULE, CYCLOHEXYL HALIDES, BENZYL HALIDES, TETRAMETHYLAND TETRAETHYLAMINE HALIDES, ETHYLENE CHLOROHYDRIN, TRIMETHYLAMINE, HYDROHALIDE, DIMETHYLAMILINE HYDROHALIDE, ANILINE HYDROCHLORIDE, HYDROCHLORIC ACID, SULFURIC ACID, AMMONIUM HALIDES, ALUMINUM CHLORIDE, P-TOLUENE SULFONIC ACID AND NAPHTHALENE SULFONIC ACID, SAID HEATING STEP BEING CARRIED OUT IN THE PRESENCE OF A NONPOLAR AND NONREACTIVE SOLVENT FOR SAID AMINOETHYLATING RACTANT SELECTED FROM THE GROUP CONSISTING OF HEPTANE, OCTANE, NONANE, DECANE, BENZENE, TOLUENE, DIOCTYLPHTHALATE, MONOCHLOROBENZENE AND O-DICHLOROBENZENE.
Claim 2
Dependent Claim 161 words
A CATALYTIC PROCESS FOR AMINOETHYLATING CELLULOSE AND POLYVINYL ALCOHOL, WHICH COMPRISES, HEATING IN A SUBSTANTIALLY WATER-FREE, LIQUID PHSE SYSTEM TO A TEMPERATURE OF ABOUT 80-140*C. A MEMBER SELECTED FROM THE GROUP CONSISTING OF CELLULOSE AND POLYVINYL ALCOHOL WITH AN AMINOETHYLATING REACTANT SELECTED FROM THE GROUP CONSISTING OF ETHYLENIMINE, 2 - METHYLETHYLENIMINE, 2,2-DIMETHYLETHYLENIMINE, TRIMETHYLETHYLENIMINE, 2 - PHENYLETHYLENIMINE, 2 - (P-OLYL)ETHYLENIMINE, 2-BIPHENYLETHYLERMININE, 2 - (P-AMINOPHENYL)ETHYLENIMINE, 2-(2,4-DINITROPHENYL)ETHYLENIMINE AND THE METHYL ESTER OF P-(CARBOXYPHENYL)-ETHYLENIMINE, IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ALKENYL HALIDES HAVING UP TO AND INCLUDING 8 CARBON ATOMS PER MOLECULE, CYCLOHEXYL HALIDES, BENZYL HALIDES, TETRAMETHYLAND TETRAETHYLAMINE HALIDES, ETHYLENE CHLOROHYDRIN, TRIMETHYLAMINE, HYDROHALIDE, DIMETHYLAMILINE HYDROHALIDE, ANILINE HYDROCHLORIDE, HYDROCHLORIC ACID, SULFURIC ACID, AMMONIUM HALIDES, ALUMINUM CHLORIDE, P-TOLUENE SULFONIC ACID AND NAPHTHALENE SULFONIC ACID, SAID HEATING STEP BEING CARRIED OUT IN THE PRESENCE OF A NONPOLAR AND NONREACTIVE SOLVENT FOR SAID AMINOETHYLATING RACTANT SELECTED FROM THE GROUP CONSISTING OF HEPTANE, OCTANE, NONANE, DECANE, BENZENE, TOLUENE, DIOCTYLPHTHALATE, MONOCHLOROBENZENE AND O-DICHLOROBENZENE.

References Cited (Backward Citations)

US1971662A Cited
US2097120A Cited
US2261294A Cited
US2261295A Cited
US2518676A Cited
US2656241A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1964-02-21 1964-08-22 1965-02-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1968-02-21 1968-08-22 1969-02-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1972-02-21 1972-08-22 1973-02-21 $7700.00 Window Closed / Lapsed

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