US4301057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tris-(3-hydroxyalkyl) phosphine oxide flame retardant compositions
Assignee: FMC Corp
•
Filing: 1980-01-28
•
Granted: 1981-11-17
•
Expires: 2000-01-28
Abstract
Abstract Thermoplastic polyamide polymers such as nylon 6/6 are rendered fire retardant by the addition of an effective amount of a tris-(3-hydroxyalkyl) phosphine oxide such as tris-(3-hydroxypropyl) phosphine oxide.
Inventors
- 👤 Diza P. Braksmayer
- 👤 Syed N. Hussain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:25
CPC Classifications
C; C08; C08L; C08L77/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
40 words
A thermoplastic glass filled polyamide polymer rendered flame retardant by having combined therewith an effective amount of a tris-(3-hyroxyalkyl) phosphine oxide having the formula: ##STR3## wherein R is any radical selected from the group consisting of hydrogen and methyl radicals.
Claim 2
Dependent Claim
40 words
A thermoplastic glass filled polyamide polymer rendered flame retardant by having combined therewith an effective amount of a tris-(3-hyroxyalkyl) phosphine oxide having the formula: ##STR3## wherein R is any radical selected from the group consisting of hydrogen and methyl radicals.
Claim 3
Dependent Claim
15 words
The flame retardant polymer of claim 1 wherein the phosphine oxide is tris-(3-hydroxypropyl) phosphine oxide.
Claim 4
Dependent Claim
15 words
The flame retardant polymer of claim 1 wherein the phosphine oxide is tris-(2-methyl-3-hyroxypropyl) phosphine oxide.
Claim 5
Dependent Claim
22 words
The flame retardant polymer of claim 1 wherein the phosphine oxide has the formula: ##STR4## wherein n may be 1 or 2.
Claim 6
Dependent Claim
16 words
The flame retardant polymer of claim 4 wherein the phosphine oxide is 3-hydroxypropyl bis-(2-methyl-3-hydroxpropyl) phosphine oxide.
Claim 7
Dependent Claim
16 words
The flame retardant polymer of claim 4 wherein the phosphine oxide is 2-methyl-3-hydroxypropyl bis-(3-hydroxypropyl) phosphine oxide.
Claim 8
Dependent Claim
24 words
The flame retardant polymer of claim 4 wherein the phosphine oxide is a mixture of 3-hydroxypropyl bis-(2-methyl-3-hydroxypropyl) phosphine oxide and bis(3-hyroxypropyl) 2-methyl-3-hydroxypropyl phosphine oxide.
Claim 9
Dependent Claim
16 words
The flame retardant polymer of claim 1 wherein said thermoplastic glass filled polyamide is nylon 66.
Claim 10
Dependent Claim
16 words
The flame retardant polymer of claim 1 wherein said thermoplastic glass filld polyamide is nylon 6.
Claim 11
Dependent Claim
21 words
The flame retardant polymer of claim 1 to which has been added about 5-25 parts per hundred of tris-(3-hydroxypropyl) phosphine oxide.
Claim 12
Dependent Claim
23 words
The flame retardant polymer of claim 1 to which has been added about 5 to 25 parts per hundred of tris-(2-methyl-3-hydroxypropyl) phosphine oxide.
Claim 13
Independent Claim
51 words
A method of manufacturing a flame retardant glass filled polyamide polymer which comprises adding thereto an effective amount of a tris-(3-hyroxyalkyl) phosphine oxide having the formula: ##STR5## wherein R is any radical selected from the group consisting of hydrogen and methyl radicals and distributing the phosphine oxide throughout said polyamide polymer.
Claim 14
Independent Claim
51 words
A method of manufacturing a flame retardant glass filled polyamide polymer which comprises adding thereto an effective amount of a tris-(3-hyroxyalkyl) phosphine oxide having the formula: ##STR5## wherein R is any radical selected from the group consisting of hydrogen and methyl radicals and distributing the phosphine oxide throughout said polyamide polymer.
Claim 15
Dependent Claim
13 words
The method of claim 12 wherein the phosphine oxide is tris-(3-hydroxypropyl) phosphine oxide.
Claim 16
Dependent Claim
13 words
The method of claim 12 wherein the phosphine oxide is tris-(2-methyl-3-hyroxypropyl) phosphine oxide.
Claim 17
Dependent Claim
20 words
The method of claim 12 wherein the phosphine oxide has the formula: ##STR6## wherein n may be 1 or 2.
Claim 18
Dependent Claim
14 words
The method of claim 15 wherein the phosphine oxide is 3-hydroxypropyl bis-(2-methyl-3-hydroxypropyl) phosphine oxide.
Claim 19
Dependent Claim
14 words
The method of claim 15 wherein the phosphine oxide is 2-methyl-3-hydroxypropyl bis-(3-hydroxypropyl) phosphine oxide.
Claim 20
Dependent Claim
22 words
The method of claim 15 wherein the phosphine oxide is a mixture of 3-hydroxypropyl bis-(2-methyl-3-hydroxypropyl) phosphine oxide and bis-(3-hydroxypropyl) 2-methyl-3-hydroxypropyl phosphine oxide.
Claim 21
Dependent Claim
14 words
The method of claim 12 wherein said glass filled polyamide polymer is nylon 66.
Claim 22
Dependent Claim
14 words
The method of claim 12 wherein said glass filled polyamide polymer is nylon 6.
Claim 23
Dependent Claim
23 words
The method of claim 12 wherein about 18 to 21 parts per hundred of tris-(3-hydroxypropyl) phosphine oxide are added to the polyamide polymer.
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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) | 1984-11-16 | 1985-05-18 | 1985-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-16 | 1989-05-18 | 1989-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-16 | 1993-05-18 | 1993-11-17 | $7700.00 | Window Closed / Lapsed |