US4287119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-Hydroxyalkyl phosphine oxide flame retardant compositions
Assignee: FMC Corp
•
Filing: 1980-02-04
•
Granted: 1981-09-01
•
Expires: 2000-02-04
Abstract
Abstract Thermoplastic polyphenylene oxide compositions such as polyphenylene oxide that has been modified with high impact polystyrene are rendered fire retardant by the addition of an effective amount of a 3-hydroxyalkyl phosphine oxide such as n-butyl bis(3-hydroxypropyl) phosphine oxide.
Inventors
- 👤 Diza P. Braksmayer
- 👤 Syed N. Hussain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:19
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/53; C07F9/5304; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5397; C08L; C08L51/00; C08L51/04
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
63 words
A polyphenylene oxide composition rendered flame retardant by having combined therewith an effective amount of 3-hydroxyalkyl phosphine oxide having the formula: ##STR3## wherein R 1 may be the same or a different radical selected from the group consisting of hydrogen, and the methyl radical, R 2 is an alkyl radical of 4 to 8 carbon atoms and n is either zero or one.
Claim 2
Dependent Claim
63 words
A polyphenylene oxide composition rendered flame retardant by having combined therewith an effective amount of 3-hydroxyalkyl phosphine oxide having the formula: ##STR3## wherein R 1 may be the same or a different radical selected from the group consisting of hydrogen, and the methyl radical, R 2 is an alkyl radical of 4 to 8 carbon atoms and n is either zero or one.
Claim 3
Dependent Claim
15 words
The flame retardant composition of claim 1 wherein the phosphine oxide is tris(2-methyl-3-hydroxypropyl) phosphine oxide.
Claim 4
Dependent Claim
15 words
The flame retardant composition of claim 1 wherein the phosphine oxide is tris(3-hydroxypropyl) phosphine oxide.
Claim 5
Dependent Claim
16 words
The flame retardant composition of claim 1 wherein the phosphine oxide is n-butyl bis(3-hydroxypropyl) phosphine oxide.
Claim 6
Dependent Claim
16 words
The flame retardant composition of claim 1 wherein the phosphine oxide is s-butyl bis(3-hydroxypropyl) phosphine oxide.
Claim 7
Dependent Claim
16 words
The flame retardant composition of claim 1 wherein the phosphine oxide is 2-methyl-3-hydroxypropyl bis(3-hydroxypropyl) phosphine oxide.
Claim 8
Dependent Claim
30 words
The flame retardant composition of claim 1 wherein said polyphenylene oxide composition contains about 35 parts by weight polyphenylene oxide and about 65 parts by weight of a polystyrene resin.
Claim 9
Dependent Claim
30 words
The flame retardant composition of claim 1 wherein said polyphenylene oxide composition contains about 40 parts by weight polyphenylene oxide and about 60 parts by weight of a polystyrene resin.
Claim 10
Dependent Claim
19 words
The flame retardant composition of claim 7 wherein the polystyrene present in said composition is a high impact polystyrene.
Claim 11
Dependent Claim
21 words
The flame retardant composition of claim 1 to which has been added about 5 parts per hundred of tris(2-methyl-3-hydroxypropyl) phosphine oxide.
Claim 12
Dependent Claim
24 words
The flame retardant composition of claim 1 to which has been added about 5 to about 6 parts per hundred of tris(3-hydroxypropyl) phosphine oxide.
Claim 13
Dependent Claim
25 words
The flame retardant composition of claim 1 to which has been added about 4.25 to about 6.5 parts per hundred of s-butyl bis(3-hydroxypropyl) phosphine oxide.
Claim 14
Dependent Claim
22 words
The flame retardant composition of claim 1 to which has been added about 5 parts per hundred of 2-methyl-3-hydroxypropyl bis(3-hydroxypropyl) phosphine oxide.
Claim 15
Independent Claim
67 words
A method of manufacturing a flame retardant polyphenylene oxide composition which comprises adding thereto an effective amount of a 3-hydroxyalkyl phosphine oxide having the formula: ##STR4## wherein R 1 may be the same or a different radical selected from the group consisting of hydrogen and the methyl radical, R 2 is an alkyl radical of 4 to 8 carbon atoms and n is either zero or one.
Claim 16
Independent Claim
67 words
A method of manufacturing a flame retardant polyphenylene oxide composition which comprises adding thereto an effective amount of a 3-hydroxyalkyl phosphine oxide having the formula: ##STR4## wherein R 1 may be the same or a different radical selected from the group consisting of hydrogen and the methyl radical, R 2 is an alkyl radical of 4 to 8 carbon atoms and n is either zero or one.
Claim 17
Dependent Claim
13 words
The method of claim 14 wherein the phosphine oxide is tris(3-hydroxypropyl) phosphine oxide.
Claim 18
Dependent Claim
13 words
The method of claim 14 wherein the phosphine oxide is tris(2-methyl-3-hydroxypropyl) phosphine oxide.
Claim 19
Dependent Claim
14 words
The method of claim 14 wherein the phosphine oxide is 2-methyl-3-hydroxypropyl bis(3-hydroxypropyl) phosphine oxide.
Claim 20
Dependent Claim
14 words
The method of claim 14 wherein the phosphine oxide is s-butyl bis(3-hydroxypropyl) phosphine oxide.
Claim 21
Dependent Claim
28 words
The method of claim 14 wherein said polyphenylene oxide composition contains about 35 parts by weight polyphenylene oxide and about 65 parts by weight of a polystyrene resin.
Claim 22
Dependent Claim
28 words
The method of claim 14 wherein said polyphenylene oxide composition contains about 40 parts by weight polyphenylene oxide and about 60 parts by weight of a polystyrene resin.
Claim 23
Dependent Claim
16 words
The method of claim 14 wherein the polyphenylene oxide composition contains a high impact polystyrene resin.
Claim 24
Dependent Claim
22 words
The method of claim 14 wherein about 5 parts per hundred of tris(2-methyl-3-hydroxypropyl) phosphine oxide is added to said polyphenylene oxide composition.
Claim 25
Dependent Claim
25 words
The method of claim 14 wherein about 5 to about 6 parts per hundred of tris(3-hydroxypropyl) phosphine oxide are added to said polyphenylene oxide composition.
Claim 26
Dependent Claim
26 words
The method of claim 14 wherein about 4.5 to about 6.5 parts per hundred of s-butyl bis(3-hydroxypropyl) phosphine oxide are added to said polyphenylene oxide composition.
References Cited (Backward Citations)
US3076034A
Cited
US3099684A
Cited
US3267149A
Cited
US3306937A
Cited
US3269963A
Cited
GB1028158A
Cited
US3346647A
Cited
US3434981A
Cited
US3341625A
Cited
US3489811A
Cited
US3736349A
Cited
US3654342A
Cited
US3716580A
Cited
US3683028A
Cited
US3666543A
Cited
US4056571A
Cited
US3629365A
Cited
US3948980A
Cited
US3931104A
Cited
DE2605307A1
Cited
US4007229A
Cited
US3970636A
Cited
US4087408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |