US3061581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl modification of branched chain polyamides
Assignee: Millennium Petrochemicals Inc
•
Filing: 1959-07-09
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Granted: 1962-10-30
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Expires: 1979-07-09
Abstract
No abstract record available.
Inventors
- 👤 Stanley P Rowland
- 👤 Melvin F Maringer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:50
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/48; C08F; C08F283/00; C08F283/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS FOR IMPROVING THE PROPERTIES OF A POLYAMIDE PREPARED BY REACTING (A) A DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF BRANCHED CHAIN C10 SATURATED ALIPHATIC ACIDS AND MIXTURES THEREOF WITH STRAIGHT CHAIN C6 TO C10 SATURATED ALIPHATIC ACID WITH (B) A DIAMINE HAVING AT LEAST ONE HYDROGEN ATOM ATTACHED TO EACH NITROGEN ATOM WHICH COMPRISES REACTING SAID POLYAMIDE AT A TEMERATURE BETWEEN ABOUT 80* AND 300*C. WITH VINYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACRYONITRILE STYRENE, AND VINYL TOLUENE IN THE PRESENCE OF AN ADDED FREE RADICAL POLYMERIZATION CATALYST, THE AMOUNT OF SAID VINYL COMPOUND BEING IN THE RANGE OF ABOUT 0.05 TO 0.25 PART PER PART OF SAID POLYAMIDE.
Claim 2
Dependent Claim
113 words
A PROCESS FOR IMPROVING THE PROPERTIES OF A POLYAMIDE PREPARED BY REACTING (A) A DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF BRANCHED CHAIN C10 SATURATED ALIPHATIC ACIDS AND MIXTURES THEREOF WITH STRAIGHT CHAIN C6 TO C10 SATURATED ALIPHATIC ACID WITH (B) A DIAMINE HAVING AT LEAST ONE HYDROGEN ATOM ATTACHED TO EACH NITROGEN ATOM WHICH COMPRISES REACTING SAID POLYAMIDE AT A TEMERATURE BETWEEN ABOUT 80* AND 300*C. WITH VINYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACRYONITRILE STYRENE, AND VINYL TOLUENE IN THE PRESENCE OF AN ADDED FREE RADICAL POLYMERIZATION CATALYST, THE AMOUNT OF SAID VINYL COMPOUND BEING IN THE RANGE OF ABOUT 0.05 TO 0.25 PART PER PART OF SAID POLYAMIDE.
References Cited (Backward Citations)
US2539438A
Cited
GB679562A
Cited
US2837496A
Cited
US2816916A
Cited
FR1130100A
Cited
GB809558A
Cited
FR1161824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |