US4072658A
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US
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Novel phosphorus- and bromine-containing polymers
Assignee: Kanebo Ltd
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Filing: 1975-05-15
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Granted: 1978-02-07
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Expires: 1995-05-15
Abstract
Abstract Phosphorus and bromine-containing polymers having the formula ##STR1## WHEREIN R 1 is an alkylene group having 2-3 carbon atoms; ##STR2## WHEREIN M IS AN INTEGER OF 1-4 AND B is an alkylene or alkylidene group having 1-6 carbon atoms or sulfone group; Z is --R 2 or --OR 2 , provided that R 2 is an alkyl or aryl group; Y is sulfur or oxygen; l is 0 or 1; p and q are integers of at least 1 and a sum of p and q is an integer of not more than 4; and n is an integer of 3-40 are colorless and have an excellent thermal property. The polymers are excellent as a flame retardant for inflammable organic high polymers, and flame resistant compositions having excellent washing resistance, light resistance and whiteness can be obtained by compounding the phosphorus- and bromine-containing polymer with the inflammable organic high polymer.
Inventors
- 👤 Kazuo Okamoto
- 👤 Hiroshi Uchio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:32
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/04; C08L; C08L101/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
183 words
A polymer having the formula ##STR30## wherein R 1 , A, Z, Y, l, p and q have the same meanings as defined hereinafter and n is 3 to 40, obtained by reacting, in the liquid phase, at least one bromine-containing compound having the formula (I) h(or.sub.1).sub.p OAO(R.sub. 1 O).sub.q H (I) wherein R 1 is alkylene having 2 or 3 carbon atoms, p and q are integers of at least 1 and the sum of p and q is an integer of not more than 4 and A is ##STR31## wherein m is an integer of one to 4 and B is alkylene or alkylidene having one to 6 carbon atoms or sulfone, with at least one phosphorus halide compound having the formula (II) ##STR32## wherein Z is --R 2 or --OR 2 , R 2 is alkyl or aryl, X is chlorine or bromine, Y is sulfur or oxygen and l is zero or 1, wherein the molar ratio of the formula (I) compound:formula (II) compound is 1.0:0.9 to 1.5 and wherein the reaction temperature is from zero to 180° C.
Claim 2
Dependent Claim
183 words
A polymer having the formula ##STR30## wherein R 1 , A, Z, Y, l, p and q have the same meanings as defined hereinafter and n is 3 to 40, obtained by reacting, in the liquid phase, at least one bromine-containing compound having the formula (I) h(or.sub.1).sub.p OAO(R.sub. 1 O).sub.q H (I) wherein R 1 is alkylene having 2 or 3 carbon atoms, p and q are integers of at least 1 and the sum of p and q is an integer of not more than 4 and A is ##STR31## wherein m is an integer of one to 4 and B is alkylene or alkylidene having one to 6 carbon atoms or sulfone, with at least one phosphorus halide compound having the formula (II) ##STR32## wherein Z is --R 2 or --OR 2 , R 2 is alkyl or aryl, X is chlorine or bromine, Y is sulfur or oxygen and l is zero or 1, wherein the molar ratio of the formula (I) compound:formula (II) compound is 1.0:0.9 to 1.5 and wherein the reaction temperature is from zero to 180° C.
Claim 3
Dependent Claim
21 words
A polymer as claimed in claim 1, wherein the bonded position of bromine in the compound of formula (I) is ortho-position.
Claim 4
Dependent Claim
12 words
A polymer as claimed in claim 1, wherein R 2 is aryl.
Claim 5
Dependent Claim
18 words
A polymer as claimed in claim 1, wherein Z is --R 2 and said --R 2 is aryl.
Claim 6
Dependent Claim
15 words
A polymer as claimed in claim 1, wherein l is 1 and Y is oxygen.
Claim 7
Dependent Claim
13 words
A polymer as claimed in claim 1, wherein n is 5 to 20.
Claim 8
Dependent Claim
14 words
A polymer as claimed in claim 2, wherein the formula (I) compound is ##STR33##
Claim 9
Dependent Claim
14 words
A polymer as claimed in claim 2, wherein the formula (I) compound is ##STR34##
Claim 10
Dependent Claim
18 words
A polymer as claimed in claim 7, wherein the formula (II) compound is phenyldichlorophosphine oxide or phenyldibromophosphine oxide.
Claim 11
Dependent Claim
18 words
A polymer as claimed in claim 3, wherein the formula (II) compound is phenoxydichlorophosphine oxide or phenoxydibromophosphine oxide.
Claim 12
Dependent Claim
25 words
A polymer as claimed in claim 1, wherein the molar ratio of the formula (I) compound to the formula (II) compound is 1.0:0.9 to 1.1.
Claim 13
Dependent Claim
14 words
A polymer as claimed in claim 1, wherein the reaction temperature is 60°-160° C.
Claim 14
Dependent Claim
14 words
A polymer as claimed in claim 1, wherein the reaction is a solution polymerization.
Claim 15
Dependent Claim
30 words
A polymer as claimed in claim 1 in which the reaction is melt polymerization carried out at a temperature of 120° to 150° C for from 0.5 to 3.0 hours.
Claim 16
Dependent Claim
30 words
A polymer as claimed in claim 1 in which the reaction is solution polymerization carried out at a temperature of 60° to 160° C for from 0.1 to 8 hours.
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) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |