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US3770801A Expired / Lapsed US ⏱️ 0.0 years remaining

Esters of sulfo-benzoic and phthalic acid

Assignee: Rohm and Haas Co
•
Filing: 1971-04-16
•
Granted: 1973-11-06
•
Expires: 1991-04-16
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Abstract

Abstract WHEREIN R IS HYDROGEN OR LOWER (C1-C4)ALKYL, SUCH AS METHYL, A IS AN ALKYLENE GROUP HAVING 2 TO 10 CARBON ATOMS, AT LEAST 2 OF WHICH EXTEND IN ONE CHAIN BETWEEN THE OXYGEN ATOMS, AND X IS AN AROMATIC NUCLEUS OR AN ALKYL GROUP, SUBSTITUTED BY A SULFONIC ACID GROUP AND OPTIONALLY ONE OR MORE GROUPS SELECTED FROM SULFONIC ACID, CARBOXYLIC ACID, AND LOWER ALKYL, SUCH AS METHYL, ETHYL, PROPYL, OR BUTYL. CH2=C(-R)-COO-A-OOC-X THE PRESENT INVENTION IS CONCERNED WITH NOVEL MONOMERS CONTAINING SULFONIC ACID GROUPS OR SALTS THEREOF AND POLYMERS THEREOF WHICH ARE USEFUL FOR MANY PURPOSES, SUCH AS ANTISTATIC AGENTS FOR TEXTILES AND OTHER SHAPED ARTICLES FORMED OF HYDROPHILIC MATERIALS. THEY ARE USEFUL FOR MAKING COPOLYMERS THAT ARE PARTICULARLY VALUABLE IN COATING COMPOSITIONS, ESPECIALLY IN THE FORM OF AQUEOUS LATICES OR ORGANIC SOLVENT SOLUTIONS THEREOF. EXAMPLES OF THE MONOMERS ARE OF THE FORMULA

Inventors

  • 👤 W Emmons
  • 👤 G Swift

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 05:39
CPC Classifications
C; C08; C08F; C08F28/00; C07; C07C; C07C309/00; C07C51/00; C07C51/54; C07C51/567

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1976-11-05 1977-05-07 1977-11-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-11-05 1981-05-07 1981-11-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-11-05 1985-05-07 1985-11-06 $7700.00 Window Closed / Lapsed

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