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US2813776A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for forming films and filaments directly from polymer intermediates

Assignee: EIDP Inc
•
Filing: 1955-02-21
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Granted: 1957-11-19
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Expires: 1975-02-21
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Abstract

No abstract record available.

Inventors

  • 👤 Charles R Koller

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 14:53
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/58

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 201 words
A PROCESS WHICH COMPRISES FORMING A SOLID SHAPED STRUCTURE BY COMBINING AT LEAST TWO LIQUID COMPLEMENTARY REACTIVE POLYMER INTERMEDIATES, ONE OF WHICH CONTAINS AT LEAST TWO ACTIVE HYDROGENS MORE REACTIVE THAN ALCOHOLIC HYDROGEN, WHEREAS ITS COMPLEMENT CONTAINS AT LEAST TWO REACTIVE GROUPS CAPABLE OF REACTING WITH ALCOHOL AT ROOM TEMPERATURE TO FORM AN ESTER, AND AT LEAST ONE OF THE SAID COMPLEMENTARY REACTIVE POLYMER INTERMEDIATES BEING A MULTIFUNCTIONAL ORGANIC MACROMOLECULE, HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF FROM ABOUT 400 TO ABOUT 7000, THE SAID MACROMOLECULE CONSISTING ESSENTIALLY OFF AT LEAST ONE MENBER SELECTED FROM THE GROUP CONSISTING OF A HYDROCARBON POLYMER, A POLYETHER AND A POLYTHIOETHER, AND AT LEAST ONE OF THE OTHER OF THE SAID COMPLEMENTARY REACTIVE POLYMER INTERMEDIATES BEING A POLYFUNCTIONAL, MONOMERIC, ORGANIC MOLECULE, THE PROPORTIONATE MOLECULAR WEIGHTS OF MACROMOLECULAR INTERMEDIATE TO THE MONOMERIC MOLECULAR INTERMEDIATE BEING SUCH THAT AT LEAST ABOUT 30% BY WEIGHT OF THE FINAL SHAPED STRUCTURE IS CONTRIBUTED BY THE MACROMOLECULAR INTERMEDIATE WHILE AT LEAST ABOUT 10% BY WEIGHT OF THE FINAL SHAPED STRUCTURE IS CONTRIBUTED BY THE MONOMERIC MOLECULAR INTERMEDIATE, THE COMBINATION OF THE SAID COMPLEMENTARY INTERMEDIATES BEING ACCOMPLISHED BY EXTRUDING THROUGH AN ORIFICE ONE SAID COMPLEMENTARY POLYMER INTERMEDIATE INTO THE OTHER.
Claim 2
Dependent Claim 201 words
A PROCESS WHICH COMPRISES FORMING A SOLID SHAPED STRUCTURE BY COMBINING AT LEAST TWO LIQUID COMPLEMENTARY REACTIVE POLYMER INTERMEDIATES, ONE OF WHICH CONTAINS AT LEAST TWO ACTIVE HYDROGENS MORE REACTIVE THAN ALCOHOLIC HYDROGEN, WHEREAS ITS COMPLEMENT CONTAINS AT LEAST TWO REACTIVE GROUPS CAPABLE OF REACTING WITH ALCOHOL AT ROOM TEMPERATURE TO FORM AN ESTER, AND AT LEAST ONE OF THE SAID COMPLEMENTARY REACTIVE POLYMER INTERMEDIATES BEING A MULTIFUNCTIONAL ORGANIC MACROMOLECULE, HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF FROM ABOUT 400 TO ABOUT 7000, THE SAID MACROMOLECULE CONSISTING ESSENTIALLY OFF AT LEAST ONE MENBER SELECTED FROM THE GROUP CONSISTING OF A HYDROCARBON POLYMER, A POLYETHER AND A POLYTHIOETHER, AND AT LEAST ONE OF THE OTHER OF THE SAID COMPLEMENTARY REACTIVE POLYMER INTERMEDIATES BEING A POLYFUNCTIONAL, MONOMERIC, ORGANIC MOLECULE, THE PROPORTIONATE MOLECULAR WEIGHTS OF MACROMOLECULAR INTERMEDIATE TO THE MONOMERIC MOLECULAR INTERMEDIATE BEING SUCH THAT AT LEAST ABOUT 30% BY WEIGHT OF THE FINAL SHAPED STRUCTURE IS CONTRIBUTED BY THE MACROMOLECULAR INTERMEDIATE WHILE AT LEAST ABOUT 10% BY WEIGHT OF THE FINAL SHAPED STRUCTURE IS CONTRIBUTED BY THE MONOMERIC MOLECULAR INTERMEDIATE, THE COMBINATION OF THE SAID COMPLEMENTARY INTERMEDIATES BEING ACCOMPLISHED BY EXTRUDING THROUGH AN ORIFICE ONE SAID COMPLEMENTARY POLYMER INTERMEDIATE INTO THE OTHER.

References Cited (Backward Citations)

US2708617A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1960-11-18 1961-05-20 1961-11-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1964-11-18 1965-05-20 1965-11-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1968-11-18 1969-05-20 1969-11-19 $7700.00 Window Closed / Lapsed

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