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US4795774A
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Polyketone stabilization
Assignee: Shell USA Inc
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Filing: 1987-10-05
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Granted: 1989-01-03
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Expires: 2007-10-05
Abstract
Abstract Polymeric compositions of enhanced stability against oxidative degradation are produced when aromatic amines of up to 2 aromatic rings and at least one amino group are incorporated in polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon.
Inventors
- 👤 Robert Q. Kluttz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:55
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
98 words
The method of stabilizing a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon by incorporating therein a stabilizing quantity of an aromatic amine of from 1 to 2 aromatic rings, from 6 to 50 carbon atoms and at least one amino group represented by the formula ##STR3## wherein A is an aromatic ring system derived from benzene, naphthalene or biphenyl, Z is selected from the group --NR 2 and --OR, R is selected from hydrogen, alkyl and aryl, R' is alkyl and n independently is an integer of from 0 to 2 inclusive.
Claim 2
Independent Claim
98 words
The method of stabilizing a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon by incorporating therein a stabilizing quantity of an aromatic amine of from 1 to 2 aromatic rings, from 6 to 50 carbon atoms and at least one amino group represented by the formula ##STR3## wherein A is an aromatic ring system derived from benzene, naphthalene or biphenyl, Z is selected from the group --NR 2 and --OR, R is selected from hydrogen, alkyl and aryl, R' is alkyl and n independently is an integer of from 0 to 2 inclusive.
Claim 3
Dependent Claim
49 words
The method of claim 1 wherein the polymer is represented by the formula --CO--CH.sub.2 --CH.sub.2)].sub.x [CO--(Y)].sub.y wherein B is a moiety of an ethylenically unsubstituted hydrocarbon of from 3 to 20 carbon atoms polymerized through the ethylenic unsaturation and the ratio of y:x is no more than about 0.5.
Claim 4
Dependent Claim
10 words
The method of claim 2 wherein the hydrocarbon is propylene.
Claim 5
Dependent Claim
16 words
The method of claim 3 wherein A is an aromatic ring system of 1 aromatic ring.
Claim 6
Dependent Claim
11 words
The method of claim 4 wherein the aromatic amine is N,N,N',N'-tetramethylphenylenediamine.
Claim 7
Dependent Claim
11 words
The method of claim 4 wherein the aromatic amine is 4-amino-m-cresol.
Claim 8
Dependent Claim
7 words
The method of claim 4 wherein y=0.
Claim 9
Dependent Claim
17 words
The method of claim 4 wherein the ratio of y:x is from about 0.01 to about 0.1.
Claim 10
Dependent Claim
17 words
The method of claim 3 wherein the A is an aromatic ring system of 2 aromatic rings.
Claim 11
Dependent Claim
12 words
The method of claim 9 wherein the aromatic amine is 1,8 bis(dimethylamino)naphthalene.
Claim 12
Dependent Claim
11 words
The method of claim 9 wherein the aromatic amine is N,N'-diphenylbenzidine.
Claim 13
Dependent Claim
101 words
A polymer composition stabilized against oxidative degradation which comprises a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and a stabilizing quantity of an aromatic amine of from 1 to 2 aromatic rings, from 6 to 50 carbon atoms and at least one amino group represented by the formula ##STR4## wherein A is an aromatic ring system derived from benzene, naphthalene or biphenyl, Z is selected from the group --NR 2 and --OR, R is selected from hydrogen, alkyl and aryl, R' is alkyl and n independently is an integer of from 0 to 2 inclusive.
Claim 14
Dependent Claim
101 words
A polymer composition stabilized against oxidative degradation which comprises a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and a stabilizing quantity of an aromatic amine of from 1 to 2 aromatic rings, from 6 to 50 carbon atoms and at least one amino group represented by the formula ##STR4## wherein A is an aromatic ring system derived from benzene, naphthalene or biphenyl, Z is selected from the group --NR 2 and --OR, R is selected from hydrogen, alkyl and aryl, R' is alkyl and n independently is an integer of from 0 to 2 inclusive.
Claim 15
Dependent Claim
46 words
The composition of claim 12 wherein the polymer is represented by the formula --CO--CH.sub.2 --CH.sub.2 ].sub.x [CO--(Y)].sub.y wherein B is an ethylenically unsaturated hydrocarbon of from 3 to 20 carbon atoms polymerized through the ethylenic unsaturation and the ratio of y:x is no more than 0.5.
Claim 16
Dependent Claim
9 words
The composition of claim 13 wherein Y is propylene.
Claim 17
Dependent Claim
7 words
The composition of claim 14 wherein y=0.
Claim 18
Dependent Claim
16 words
The composition of claim 15 wherein A is an aromatic ring system of one aromatic ring.
Claim 19
Dependent Claim
11 words
The composition of claim 16 wherein the aromatic amine is N,N,N',N'-tetramethyl-p-phenylenediamine.
Claim 20
Dependent Claim
11 words
The composition of claim 16 wherein the aromatic amine is 4-amino-m-cresol.
Claim 21
Dependent Claim
17 words
The composition of claim 14 wherein the ratio of y:x is from about 0.01 to about 0.1.
Claim 22
Dependent Claim
11 words
The composition of claim 19 wherein the aromatic amine is 1,8bis(dimethylamino)naphthalene.
Claim 23
Dependent Claim
16 words
The composition of claim 19 wherein A is an aromatic ring system of 1 aromatic ring.
Claim 24
Dependent Claim
11 words
The composition of claim 21 wherein the aromatic amine is 3-diethylaminophenol.
Claim 25
Dependent Claim
11 words
The composition of claim 21 wherein the aromatic amine is N,N,N',N'-tetramethylphenylenediamine.
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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) | 1992-01-03 | 1992-07-04 | 1993-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-03 | 1996-07-04 | 1997-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-03 | 2000-07-04 | 2001-01-03 | $7700.00 | Window Closed / Lapsed |