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US2504835A Expired / Lapsed US ⏱️ 0.0 years remaining

Resin for stabilizing textiles and process of making the same

Assignee: Reichhold Chemicals Inc
•
Filing: 1946-08-23
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Granted: 1950-04-18
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Expires: 1966-08-23
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Abstract

No abstract record available.

Inventors

  • 👤 Hewett Philip Stanley
  • 👤 Ralph E Carter

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 03:21
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 130 words
A PROCESS FOR PREPARING A CLEAR, STABLE, WATER WHITE AND WATER SOLUBLE OR DISPERSIBLE RESINOUS CONDENSATION PRODUCT CAPABLE OF DIMENSIONALLY STABILIZING CELLULOSIC TEXTILE MATERIALS, WHICH PROCESS COMPRISES INITIALLY SUBSTANTIALLY COMPLETELY REACTING A SATURATED KETONE SELECTED FROM A GROUP CONSISTING OF ALIPHATIC AND HYDROAROMATIC KETONE WITH FORMALDEHYDE IN AQUEOUS SOLUTION IN THE PROPORTION OF 2-5 MOLS OF FORMALDEHYDE TO 1 MOL OF KETONE IN THE PRESENCE OF A NON-VOLATILE ALKALINE CATALYST AT A TEMPERATURE OF FROM 40*C. TO 65*C. FOR A PERIOD OF TWO TO FIVE HOURS AND MAINTAINING A PH OF 8-10 THROUGHOUT THE INITIAL REACTION STAGE, THEN IMMEDIATELY AND WITHOUT NEUTRALIZATION DEHYDRATING THE REACTION PRODUCT UNDER VACUUM TO FROM ABOUT 60 TO 75% SOLIDS TO FORM A CONDENSED RESINOUS PRODUCT, THE KETONE AND FORMALDEHYDE CONSTITUTING THE SOLE REACTING INGREDIENTS.

References Cited (Backward Citations)

US1716542A Cited
US1514508A Cited
US2159875A Cited
US2191802A Cited
US2237325A Cited
US2386321A Cited
US2390481A Cited
US2388410A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1953-04-17 1953-10-17 1954-04-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1957-04-17 1957-10-17 1958-04-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1961-04-17 1961-10-17 1962-04-18 $7700.00 Window Closed / Lapsed

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