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US3729446A Expired / Lapsed US ⏱️ 0.0 years remaining

Imido-substituted polyester compositions

Assignee: General Electric Co
•
Filing: 1971-04-30
•
Granted: 1973-04-24
•
Expires: 1991-04-30
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Abstract

Abstract POLYESTERS HAVING AT LEAST ONE CHEMICALLY COMBINED ALIPHATICALLY UNSATURATED IMIDO RADICAL, SUCH AS A MALEIMIDO RADICAL ARE PROVIDED AND A METHOD FOR MAKING SUCH MATERIALS. REACTION CAN BE EFFECTED BETWEEN A POLYESTER AND AN IMIDO-SUBSTITUTED ACYLHALIDE, SUCH AS A MALEIMIDOBENZOYLCHLORIDE IN THE PRESENCE OF AN ACID ACCEPTOR. BLENDS OF THE IMIDO-SUBSTITUTED POLYESTER AND A VARIETY OF ALIPHATICALLY UNSATURATED ORGANIC MONOMERS, SUCH AS STYRENE, CHLORO STYRENE, DIALLYLPHTHALATE, N-PHENYLMALEIMIDE, BIS MALEIMIDES OR ORGANIC POLYMERS SUCH AS POLYSTYRENES, STYRENE-BUTADIENE BLOCK COPOLYMERS, POLYVINYLFLUORIDE, POLYVINYLCHLORIDE, POLYESTERS, POLYSULFONE, POLYSULFONE ETHERS, POLYCARBONATE, POLYPHENYLENE OXIDES, EPOXY RESINS, PHENOL-FORMALDEHYDE RESINS, ACRYLONITRILE BUTADIENE STYRENE TERPOLYMERS, ETC., ALSO ARE PROVIDED. THE IMIDO-SUBSTITUTED POLYESTER COMPOSITIONS OF THE PRESENT INVENTION CAN BE EMPLOYED AS COATINGS, VARNISHES, INJECTION MOLDING COMPOUNDS, LAMINATING COMPOUNDS, ETC.

Inventors

  • 👤 F Holub
  • 👤 M Evans

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 14:26
CPC Classifications
C; C08; C08L; C08L67/00; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08G63/6858; C08G63/91; C08G73/00; C08G73/06; C08G73/10; C08G73/16; C08L67/06

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) 1976-04-23 1976-10-23 1977-04-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-04-23 1980-10-23 1981-04-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-04-23 1984-10-23 1985-04-24 $7700.00 Window Closed / Lapsed

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