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US3794576A Expired / Lapsed US ⏱️ 0.0 years remaining

Epoxide blend radiation sensitive catalyst precursor

Assignee: Primerica Inc
•
Filing: 1971-05-18
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Granted: 1974-02-26
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Expires: 1991-05-18
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Abstract

Abstract A BLEND OF EPOXIDE MATERIAL IS PROVIDED WHICH, ALTHOUGH ESSENTIALLY FREE TO VOLATILE SOLVENTS, IS LIQUID AND TRACTABLE FOR COATING AND RELATED APPLICATIONS AT OR NEAR ROOM TEMPERATURE. THE EPOXIDE MATERIALS INCLUDE AN EPOXY PREPOLYMER OF THE TYPE OF GLYCIDYL-BISPHENOL A RESINS, EPOXIDIZED NOVOLAKS, POLYGLYCIDYL ETHERS AND ALICYCCLIC DIEPOXIDES, BLENDED WITH A BIS(EPOXYCYCLOALKYL) ESTER AND IN MANY CASES ALSO WITH A LOW VISCOSITY MONOEPOXIDE IN LIMITED PROPORTIONS. THE COMPOSITIONS PREFERABLY INCLUDE ADDITIONALLY A CATIONIC POLYMERIZATION INITIATOR, PREFERABLY A RADIATION-SENSITIVE CATALYST PRECURSOR, AND EPOXIDE POLYMERS ARE PRODUCED BY COATING SUCH COMPOSIONS ON A SUBSTRATE, FOLLOWED BY APPLICATION OF ENERGY THROUGH HEAING OR PREFERABLY THROUGH IRRADIATION, TO EFFECT SUBSTANTIAL POLYMERIZATION OF THE EPOXIDIC MATERALS OF THE COATING.

Inventors

  • 👤 W Watt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 18:45
CPC Classifications
B; B41; B41M; B41M7/00; B41M7/009; B41M7/0045; B41N; B41N1/00; B41N1/003; C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08G59/24; C08G59/32; C08G59/38; C08G59/68; C08G59/686; G; G03; G03F; G03F7/00; G03F7/004; G03F7/016; G03F7/021; G03F7/0212; G03F7/0217; G03F7/038; G03F7/0385

Claims Analysis

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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) 1977-02-25 1977-08-27 1978-02-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-02-25 1981-08-27 1982-02-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-02-25 1985-08-27 1986-02-26 $7700.00 Window Closed / Lapsed

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