US3154374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for modifying the properties of shaped structures from highly polymeric polyesters
Assignee: Hoechst AG
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Filing: 1961-09-12
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Granted: 1964-10-27
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Expires: 1981-09-12
Abstract
No abstract record available.
Inventors
- 👤 Gruschke Hans
- 👤 Kretsch-Hothum Rosel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:23
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/02; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/32; C09B1/34; D; D01; D01F; D01F6/00; D01F6/58; D01F6/62; D06; D06M; D06M13/00; D06M13/02; D06M13/08; D06M13/10; D06M13/12; D06M13/127; D06M13/152; D06M13/165; D06M13/184; D06M13/1845; D06M13/224; D06M13/322; D06M13/345; D06M13/52; D06M13/53; D06P; D06P1/00; D06P1/44; D06P1/60; D06P1/613; D06P1/64; D06P1/642; D06P1/6421; D06P1/645; D06P1/647; D06P1/649; D06P1/651; D06P1/65106; D06P1/65112; D06P1/65125; D06P1/65131; D06P1/6515; D06P1/65156; D06P1/65162; D06P1/653; D06P1/6536; D06P1/655; D06P1/66; D06P3/00; D06P3/34; D06P3/52; D06P3/521; D06P3/54; D06P5/00; D06P5/20; D06P5/2066; D06P5/2072; D06P5/22; C08J2367/00; C08J2367/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A PROCESS FOR IMPROVING ENDLESS FILAMENTS MADE OF HIGH MOLECULAR WEIGHT LINEAR POLYESTERS CONTAINING SIXMEMBERED CARBOCYCLES OF POLYBASIC ACIDS AND POLYHYDRIC ALCOHOLS, WHICH PROCESS COMPRISES TREATING SAID FILAMENTS DURING A PERIOD OF FROM 10-*4 SSECOND TO 10 SECONDS AT A TEMPERATURE OF FROM 200* TO 350*C., IN THE SUBSTANTIAL ABSENCE OF ANY DYESTUFF, WITH A SWELLING AGENT FOR THE POLYESTERS, SAID AGENT BEING CHEMICALLY UNREACTIVE WITH THE POLYESTERS, BOILING ABOVE 140*C., AND BEING SELECTED FROM THE GROUP CONSISTING OF ESTERS OF ALIPHATIC AND BENZENE MONO- AND DI-CARBOXYLIC ACIDS HAVING 6-18 CARBON ATOMS WITH ALIPHATIC ALCOHOLS HAVING 1-12 CARBON ATOMS, BENZYL ALCOHOL, AND PHENOL; ETHYL-B-NAPHTHOL ETHER, DIPHENYL ETHER, BENZOPHENONE, BENZOIN, DIPHENYL METHANE, DIPHENYL, AND A-METHYL NAPHTHALENE, AND THEN REMOVING ANY EXCESS SWELLING AGENT, SAID TREATING BEING CARRIED OUT AS A NEXT STEP AFTER EXTRUDING AND STRETCHING SAID ENDLESS FILAMENTS.
Claim 2
Dependent Claim
138 words
A PROCESS FOR IMPROVING ENDLESS FILAMENTS MADE OF HIGH MOLECULAR WEIGHT LINEAR POLYESTERS CONTAINING SIXMEMBERED CARBOCYCLES OF POLYBASIC ACIDS AND POLYHYDRIC ALCOHOLS, WHICH PROCESS COMPRISES TREATING SAID FILAMENTS DURING A PERIOD OF FROM 10-*4 SSECOND TO 10 SECONDS AT A TEMPERATURE OF FROM 200* TO 350*C., IN THE SUBSTANTIAL ABSENCE OF ANY DYESTUFF, WITH A SWELLING AGENT FOR THE POLYESTERS, SAID AGENT BEING CHEMICALLY UNREACTIVE WITH THE POLYESTERS, BOILING ABOVE 140*C., AND BEING SELECTED FROM THE GROUP CONSISTING OF ESTERS OF ALIPHATIC AND BENZENE MONO- AND DI-CARBOXYLIC ACIDS HAVING 6-18 CARBON ATOMS WITH ALIPHATIC ALCOHOLS HAVING 1-12 CARBON ATOMS, BENZYL ALCOHOL, AND PHENOL; ETHYL-B-NAPHTHOL ETHER, DIPHENYL ETHER, BENZOPHENONE, BENZOIN, DIPHENYL METHANE, DIPHENYL, AND A-METHYL NAPHTHALENE, AND THEN REMOVING ANY EXCESS SWELLING AGENT, SAID TREATING BEING CARRIED OUT AS A NEXT STEP AFTER EXTRUDING AND STRETCHING SAID ENDLESS FILAMENTS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |