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US3763220A Expired / Lapsed US ⏱️ 0.0 years remaining

Sulfur containing esters of substituted hydroxyphenylalkanoic acids

Assignee: Cincinnati Milacron Chemicals Inc
•
Filing: 1971-12-14
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Granted: 1973-10-02
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Expires: 1991-12-14
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Abstract

Abstract COMPOUNDS ARE PREPARED HAVING ONE OF THE FOLLOWING FORMULAE: WHERE R5 AND R6 ARE HYDROGEN, ALKYL, CYCLOALKYL, ARYL OR ARALKYL, THE TOTAL CARBON ATOMS IN R5 AND R6 IS BETWEEN 4 AND 36 CARBON ATOMS, IS PREFERABLY NOT OVER 12 CARBON ATOMS AND R6 IS PREFERABLY IN THE ORTHO POSITION, R2 IS -CH2-CNH2N-S-(CNH(2N-1))(-R15)-COO-R3, -CH2-CH(-CH2-S-(CH2)N-COO-R3)-S-(CH2)N-COO-R3, OR -CH2-C(-CNH(2N+1))(-CH2-O-(CH2)3-S-(CH2)N-COO-R3)2 R3 IS HYDROCARBYL, PREFERABLY ALKYL OR ALKENYL, E.G. OF 1 TO 18 CARBON ATOMS, N IS 1 OR 2, R14 IS H OR COOR2, M IS 1, 2, 3 OR 4, Y IS 0 OR 1, AND R4 IS EITHER R2 OR R3 AND R15 IS HYDROGEN OR LOWER ALKYL. THE ABOVE COMPOUNDS ARE USEFUL AS ANTIOXIDANTS. (A) HO-R1-CH2-S-(CH2)N-COO-R4 (B) HO-R1-(CH(-R14))Y-CH2-COO-R2 (C) HO-R1-CMH(2M-1)(-S-(CH2)N-COO-R3)2 (D) (HO-R1-CH2-)2-C(-COO-R2)2 (E) HO-R1-CH2-O-(CH2)N-COO-R2 (F) HO-R1-CH2-O-CH2-CH2-OOC-CH2-CH2-S-(CH2)N-COO-R3 (G) HO-R1-CH2-CH(-COO-R2)2 (H) HO-R1-CH=C(-COO-R2)2 2-R5,R6-PHENOL COO-R3)-CH2-S-(CH2)N-COO-R3, -CH2-C(-CNH(2N+1))-(CH2-O- (C) HOR1CMH2M-1(S(CH2)NCOOR3)2 (D) (HOR1CH2)2C(COOR2)2 WHERE HOR1 IS HO-R1-CH=C(-COO-R2)2 OOC-(CH2)2-S-(CH2)N-COO-R3, HO-R1-CH2-CH(-COO-R2)2, AND R2)2, HO-R1-CH2-O-(CH2)N-COO-R2, HO-R1-CH2-O-(CH2)2- HO-R1-CMH(2M-1)-(S-(CH2)N-COO-R3)2, (HO-R1-CH2)2-C(-COO- HO-R1-CH2-S-(CH2)N-COO-R4, HO-R1-(CH(-R14))Y-CH2-COO-R2, (A) HOR1CH2S(CH2)NCO+OOR4

Inventors

  • 👤 I Hechenbleikner
  • 👤 J Hussar
  • 👤 A Koeniger
  • 👤 R Bresser

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 18:14
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0071; A; A23; A23B; A23B2/00; A23B2/70; A23B2/725; A23B2/729; A23B2/742; A23B2/754; A23B2/758; A23B2/767; C07; C07C; C07C323/00; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/375

Claims Analysis

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-10-01 1977-04-02 1977-10-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-10-01 1981-04-02 1981-10-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-10-01 1985-04-02 1985-10-02 $7700.00 Window Closed / Lapsed

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