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US3825575A Expired / Lapsed US ⏱️ 0.0 years remaining

Perfluoroalkylalkylmonocarboxylic acid esters

Assignee: Novartis AG
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Filing: 1971-02-03
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Granted: 1974-07-23
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Expires: 1991-02-03
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Abstract

Abstract PERFLUOROALKYLALKYLMONOCARBOXYLIC ACID ESTERS ARE PROVIDED WHICH ARE DERIVED FROM ACYCLIC ALIPHATIC EPOXIDES. THESE ESTERS CONTAIN AT LEAST ONE PERFLUOROALKYL RADICAL WITH 4 TO 14 CARBON ATOMS WHICH IS BONDED OVER AN ALKYLENE GROUP WITH 1 TO 10 CARBON ATOMS TO A CARBOXYL GROUP, WHICH IN TURN IS BONDED IN A ESTER-LIKE MANNER TO AN ACYCLIC RADICAL. THIS RADICAL CONTAINS IN THE 2-POSITION TO THE ESTER BRIDGE AN OPTIONALLY ETHERIFIED OR ESTERIFIED HYDROXYL GROUP; SAID RADICAL IS BONDED VIA AN ESTER, ETHER OR CARBAMATE BRIDGE TO AN ALKENYL GROUP WITH 2 TO 3 CARBON ATOMS WHICH IS OPTIONALLY LINKED VIA A SECOND ESTER, ETHER OR CARBAMATE BRIDGE TO AN ACYCLIC RADICAL WHICH IN TURN MAY BE BONDED VIA AN ESTER BRIDGE AND AN AKYLENE GROUP TO A PERFLUOROALKYL RADICAL. THE PERFLUOROALKYLALKYLMONOCARBOXYLIC ACID ESTERS AND ALSO THEIR HOMOPOLYMERS OR THEIR COPOLYMERS WITH OTHER POLYMERISABLE PRODUCTS ARE USED TO ACHIEVE OLEOPHOBIC FURNISHES ON POROUS OR NON-POROUS SUBSTRATES, ESPECIALLY ON FIBROUS MATERIALS, SUCH AS TEXTILES AND PAPERS.

Inventors

  • 👤 H Jaeger

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 21:22
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/28; D; D06; D06M; D06M13/00; D06M13/10; D06M13/224; D06M13/236; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/14

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) 1977-07-22 1978-01-21 1978-07-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-07-22 1982-01-21 1982-07-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-07-22 1986-01-21 1986-07-23 $7700.00 Window Closed / Lapsed

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