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US3248276A Expired / Lapsed US ⏱️ 0.0 years remaining

Polymerizates of hydroxyetherified phenolic resin esterified with unsaturated polycarboxylic acid and laminates therefrom

Assignee: Hooker Chemical Corp
•
Filing: 1961-10-09
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Granted: 1966-04-26
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Expires: 1981-10-09
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Abstract

No abstract record available.

Inventors

  • 👤 Jr Claude Thomas Bean
  • 👤 Donald H Thorpe

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 14:03
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C08G8/30; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31616; Y10T428/3162; Y10T428/31627; Y10T428/31678; Y10T428/31681; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3528; Y10T442/3569; Y10T442/3577

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 181 words
A THERMOSET POLYMER PREPARED BY A PROCESS COMPRISING ADMIXING A CATALYTIC AMOUNT OF A FREE RADICAL POLYMERIZATION CATALYST WITH A THERMOPLASTIC POLYMER, THE THERMOPLASTIC POLYMER BEING PREPARED BY A PROCESS COMPRISING THE STEPS OF REACTING TOGETHER TO PRODUCE A HYDROXYETHER DERIVATIVE (1) A FUSIBLE, ORGANIC SOLVENT SOLUBLE CONDENSATION PRODUCT OF A PHENOL AND AN ALDEHYDE CONTAINING CONDENSATE UNITS HAVING REACTIVE PHENOLIC HYDROXYL GROUPS, AND (2) A SUBSTANCE REACTIVE WITH THE PHENOLIC HYDROXYL GROUPS SELECTED FROM THE GROUP CONSISTING OF MONO OXIRANE RING COMPOUNDS, ALKYLENE HALOHYDRINS, ALKYLENE CARBONATES, AND MIXTURES THEREOF, AND ESTERIFYING THE HYDROXYETHER DERIVATIVE BY REACTING IT TOGETHER WITH A CARBOXYLIC SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF CARBOXYLIC ACIDS, CARBOXYLIC ACID ANHYDRIDES, CARBOXYLIC ACID HALIDES AND MIXTURES THEREOF A PORTION OF SAID CARBOXYLIC COMPOUND BEING POLYCARBOXYLIC TO PRODUCE A THERMOPLASTIC ESTER DERIVATIVE, AT LEAST ONE OF THE CARBOXYLIC SUBSTANCES REACTED WITH THE CONDENSATION PRODUCT BEING ETHYLENICALLY UNSATURATED AND THE CONDENSATE UNITS OF THE RESULTANT CONDENSATION PRODUCT CONTAINING AT LEAST ONE ISOLATED ADDITIONPOLYMERIZABLE CARBON-CARBON DOUBLE BOND; AND POLYMERIZING THE ADMIXTURE OF THERMOPLASTIC POLYMER AND CATALYST TO PRODUCE A THERMOSET POLYMER.
Claim 2
Dependent Claim 22 words
A LAMINATED ARTICLE COMPRISING A PLURALITY OF LAYERS OF REINFORCING MEDIUM AND AS A BINDER THEREFOR THE THERMOSET POLYMER OF CLAIM 5.

References Cited (Backward Citations)

US2581390A Cited
US2129685A Cited
US2695894A Cited
US2626929A Cited
US3037948A Cited
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US2991269A Cited
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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) 1969-04-25 1969-10-25 1970-04-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-04-25 1973-10-25 1974-04-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-04-25 1977-10-25 1978-04-26 $7700.00 Window Closed / Lapsed

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