US3867339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha crystalline lattice polyamides containing sodium phosphinate and a calcium salt
Assignee: Bridgestone Firestone Inc
•
Filing: 1973-07-16
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Granted: 1975-02-18
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Expires: 1993-07-16
Abstract
Abstract A stable polyamide molding resin containing a high degree of alpha crystalline lattice is produced by blending a polyamide polymer, sodium phenylphosphinate ranging from 0.01 to about 0.5% and a calcium salt ranging from 0.01 to about 0.5% by weight, both based on said polyamide.
Inventors
- 👤 Ulises Canellas Sanroma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:46
CPC Classifications
C; C08; C08L; C08L77/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
90 words
A NYLON RESIN COMPRISING A NUCLEATED ALPHA CRYSTALLINE LATTICE POLYLACTAM RESIN FORMED BY ADDING AND BLENDING SODIUM PHENYLPHOSPHINATE AND A CALCIUM SALT WITH A POLYLACTAM POLYMER HAVING FROM 3 TO ABOUT 15 CARBON ATOMS IN THE REPEATING UNIT, SAID SODIUM PHENYLPHOSPHINATE RANGING FROM 0.01 TO ABOUT 0.5% BY WEIGHT BASED ON SAID POLYLACTAM, SAID CALCIUM SALT RANGING FROM 0.01 TO ABOUT 0.5% BY WEIGHT BASED ON SAID POLYLACTAM AND SELECTED FROM THE GROUP CONSISTING OF CALCIUM IODIDE, CALCIUM CHLORIDE AND CALCIUM STEARATE, AND MELTING AND CRYSTALLIZING SAID BLENDED POLYLACTAM POLYMER.
Claim 2
Dependent Claim
90 words
A NYLON RESIN COMPRISING A NUCLEATED ALPHA CRYSTALLINE LATTICE POLYLACTAM RESIN FORMED BY ADDING AND BLENDING SODIUM PHENYLPHOSPHINATE AND A CALCIUM SALT WITH A POLYLACTAM POLYMER HAVING FROM 3 TO ABOUT 15 CARBON ATOMS IN THE REPEATING UNIT, SAID SODIUM PHENYLPHOSPHINATE RANGING FROM 0.01 TO ABOUT 0.5% BY WEIGHT BASED ON SAID POLYLACTAM, SAID CALCIUM SALT RANGING FROM 0.01 TO ABOUT 0.5% BY WEIGHT BASED ON SAID POLYLACTAM AND SELECTED FROM THE GROUP CONSISTING OF CALCIUM IODIDE, CALCIUM CHLORIDE AND CALCIUM STEARATE, AND MELTING AND CRYSTALLIZING SAID BLENDED POLYLACTAM POLYMER.
Claim 3
Dependent Claim
17 words
A nucleated alpha crystalline lattice nylon resin as in claim 1, wherein said polylactam polymer is polycaprolactam.
Claim 4
Dependent Claim
23 words
A nucleated alpha crystalline lattice nylon resin as in claim 2, wherein the amount of sodium phenylphosphinate ranges from 0.05 to about 0.3%.
Claim 5
Dependent Claim
18 words
A nucleated alpha crystalline lattice nylon resin as in claim 2 wherein said calcium salt is calcium stearate.
Claim 6
Dependent Claim
26 words
A nucleated alpha crystalline lattice nylon resin as in claim 2, wherein the amount of said calcium salt ranges from 0.05 to about 0.3% by weight.
Claim 7
Dependent Claim
21 words
A nucleated alpha crystalline lattice nylon resin as in claim 2 wherein the amount of sodium phenylphosphinate is 0.1% by weight.
Claim 8
Dependent Claim
22 words
A nucleated alpha crystalline lattice nylon resin as in claim 2 wherein the amount of calcium salt is about 0.1% by weight.
Claim 9
Dependent Claim
37 words
A nucleated alpha crystalline lattice nylon resin as in claim 2, wherein the amount of said sodium phenylphosphinate ranges from 0.05 to about 0.3% and the amount of said calcium salt ranges from 0.05 to about 0.3%.
Claim 10
Dependent Claim
89 words
A nylon resin comprising a nucleated alpha crystalline lattice polylactam resin formed by incorporating sodium phenylphosphinate and a calcium salt during the polymerization of a lactam having from 3 to about 15 carbon atoms, and polymerizing said lactam to produce said nucleated polylactam resin, said sodium phenylphosphinate ranging from 0.01 to about 0.5% by weight based on said polylactam, and said calcium salt ranging from 0.01 to about 0.5% by weight based on said polylactam and selected from the group consisting of calcium iodide, calcium chloride and calcium stearate.
Claim 11
Dependent Claim
89 words
A nylon resin comprising a nucleated alpha crystalline lattice polylactam resin formed by incorporating sodium phenylphosphinate and a calcium salt during the polymerization of a lactam having from 3 to about 15 carbon atoms, and polymerizing said lactam to produce said nucleated polylactam resin, said sodium phenylphosphinate ranging from 0.01 to about 0.5% by weight based on said polylactam, and said calcium salt ranging from 0.01 to about 0.5% by weight based on said polylactam and selected from the group consisting of calcium iodide, calcium chloride and calcium stearate.
Claim 12
Dependent Claim
13 words
A nylon resin as in claim 9, wherein said polylactam polymer is polycaprolactam.
Claim 13
Dependent Claim
19 words
A nylon resin as in claim 10, wherein the amount of sodium phenylphosphinate ranges from 0.05 to about 0.3%.
Claim 14
Dependent Claim
14 words
A nylon resin as in claim 10, wherein said calcium salt is calcium stearate.
Claim 15
Dependent Claim
22 words
A nylon resin as in claim 10, wherein the amount of said calcium salt ranges from 0.05 to about 0.3% by weight.
Claim 16
Dependent Claim
18 words
A nylon resin as in claim 10, wherein the amount of sodium phenylphosphinate is about 0.1% by weight.
Claim 17
Dependent Claim
18 words
A nylon resin as in claim 10, wherein the amount of calCium salt is about 0.1% by weight.
Claim 18
Dependent Claim
33 words
A nylon resin as in claim 9, wherein the amount of said sodium phenylphosphinate ranges from 0.05 to about 0.3% and the amount of said calcium salt ranges from 0.05 to about 0.3%.
References Cited (Backward Citations)
US3009900A
Cited
US2981715A
Cited
US3214414A
Cited
US3400087A
Cited
US3634543A
Cited
US3755221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |