US4377651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefin stabilization
Assignee: Phillips Petroleum Co
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Filing: 1981-04-16
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Granted: 1983-03-22
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Expires: 2001-04-16
Abstract
Abstract Homopolymers and copolymers of 1-olefins are protected against the deleterious effects of oxygen, heat and ultraviolet light by incorporating therein an additive system comprising a hindered amine component and a metal phosphonate component, optionally, containing a phenolic antioxidant, an organic phosphite, a lubricant and pigments in an amount sufficient to prevent such deterioration.
Inventors
- 👤 James C. Leininger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3435; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
186 words
A stabilized polymeric composition comprising a major amount of a polymer of a mono-1-olefin having incorporated therein a small, but effective, stabilizing amount, sufficient to stabilize said composition against the deteriorative action of oxygen, heat and ultraviolet light, of (a) at least one hindered amine represented by the formula ##STR3## where R, R 1 , R 2 are the same or different and each is an alkyl group having from 1 to 6 carbon atoms such as methyl, n-propyl, n-butyl, t-butyl, t-pentyl, t-hexyl, R 3 is an alkyl group having from 1 to 12 carbon atoms, and n is an integer of 1 to 4 and (b) at least one metal phosphonate represented by the formula ##STR4## where R is as before, R 4 is hydrogen or alkyl having from 1 to 6 carbon atoms, R 5 is an alkylene radical having from 1 to 4 carbon atoms, R 6 is hydrogen or alkyl having from 1 to 30 carbon atoms, M is a metal selected from among aluminum, barium, cadmium, calcium, chromium, cobalt, nickel, sodium, tin, and zinc and m is 1, 2 or 3.
Claim 2
Dependent Claim
186 words
A stabilized polymeric composition comprising a major amount of a polymer of a mono-1-olefin having incorporated therein a small, but effective, stabilizing amount, sufficient to stabilize said composition against the deteriorative action of oxygen, heat and ultraviolet light, of (a) at least one hindered amine represented by the formula ##STR3## where R, R 1 , R 2 are the same or different and each is an alkyl group having from 1 to 6 carbon atoms such as methyl, n-propyl, n-butyl, t-butyl, t-pentyl, t-hexyl, R 3 is an alkyl group having from 1 to 12 carbon atoms, and n is an integer of 1 to 4 and (b) at least one metal phosphonate represented by the formula ##STR4## where R is as before, R 4 is hydrogen or alkyl having from 1 to 6 carbon atoms, R 5 is an alkylene radical having from 1 to 4 carbon atoms, R 6 is hydrogen or alkyl having from 1 to 30 carbon atoms, M is a metal selected from among aluminum, barium, cadmium, calcium, chromium, cobalt, nickel, sodium, tin, and zinc and m is 1, 2 or 3.
Claim 3
Dependent Claim
14 words
A composition according to claim 1 wherein said polymer is a polymer of propylene.
Claim 4
Dependent Claim
14 words
A composition according to claim 2 wherein said polymer is a homopolymer of propylene.
Claim 5
Dependent Claim
35 words
A composition according to claim 1 which additionally contains a small, but effective, stabilizing amount of (c) at least one phenolic heat stabilizer, (d) at least one organic phosphite, and (e) at least one colorant.
Claim 6
Dependent Claim
52 words
A composition according to claim 1 wherein the amounts of (a) and (b) each can be employed in an amount ranging from about 0.05 to about 5 weight percent based on the weight of the total composition and the weight ratio of (a) to (b) ranges from about 0.1:1 to about 10:1.
Claim 7
Dependent Claim
46 words
A composition according to claim 4 wherein the amount of (c) ranges from about 0.01 to about 1 weight percent, the amount of (d) ranges from about 0.02 to about 1 php, and the amount of (e) ranges from about 0.0005 to about 5 weight percent.
Claim 8
Dependent Claim
14 words
A composition according to claim 4 wherein said polymer is a polymer of propylene.
Claim 9
Dependent Claim
61 words
A composition according to claim 1 wherein (a) is di-(1,2,2,6,6-pentamethyl-4-piperidyl)-2-n-butyl-2-(4-hydroxy-3,5-di-t-butylbenzyl)malonate and (b) is nickel bis(O-ethoxy-3,5-di-t-butyl-4-hydroxybenzyl phosphonate), the amounts of (a) and (b) each can be employed in an amount ranging from about 0.05 to about 5 weight percent based on the weight of the total composition, and the weight ratio of (a) to (b) ranges from about 0.1:1 to about 10:1.
Claim 10
Dependent Claim
14 words
A composition according to claim 8 wherein said polymer is a polymer of propylene.
Claim 11
Dependent Claim
21 words
A composition according to claim 8 which additionally contains (c) tris-(3,5-di-t-butyl-4-hydroxybenzyl)cyanurate, (d) is distearyl pentaerythritol diphosphite, and (e) is a colorant.
Claim 12
Dependent Claim
14 words
A composition according to claim 10 wherein said polymer is a homopolymer of propylene.
Claim 13
Dependent Claim
17 words
A stabilized polymeric composition of claim 2 or 3 wherein said composition also comprises a blue colorant.
Claim 14
Dependent Claim
18 words
A stabilized polymeric composition of claim 4 wherein said at least one colorant is chosen from blue colorants.
Claim 15
Dependent Claim
23 words
A stabilizer polymeric composition of claim 5, 6, or 7 wherein said mono-1-olefin is propylene and said composition also comprises a blue colorant.
Claim 16
Dependent Claim
20 words
A stabilized polymeric composition of claim 9 or 11 wherein said at least one colorant is chosen from blue colorants.
Claim 17
Dependent Claim
156 words
A stabilizer system for polymers comprising a mixture of (a) at least one hindered amine represented by the formula ##STR5## where R, R 1 , R 2 are the same or different and each is an alkyl group having from 1 to 6 carbon atoms such as methyl, n-propyl, n-butyl, t-butyl, t-pentyl, t-hexyl, R 3 is an alkyl group having from 1 to 12 carbon atoms, and n is an integer of 1 to 4 and (b) at least one metal phosphonate represented by the formula ##STR6## where R is as before, R 4 is hydrogen or alkyl having from 1 to 6 carbon atoms, R 5 is an alkylene radical having from 1 to 4 carbon atoms, R 6 is hydrogen or alkyl having from 1 to 30 carbon atoms, M is a metal selected from among aluminum, barium, cadmium, calcium, chromium, cobalt, nickel, sodium, tin, and zinc and m is 1, 2 or 3.
Claim 18
Dependent Claim
156 words
A stabilizer system for polymers comprising a mixture of (a) at least one hindered amine represented by the formula ##STR5## where R, R 1 , R 2 are the same or different and each is an alkyl group having from 1 to 6 carbon atoms such as methyl, n-propyl, n-butyl, t-butyl, t-pentyl, t-hexyl, R 3 is an alkyl group having from 1 to 12 carbon atoms, and n is an integer of 1 to 4 and (b) at least one metal phosphonate represented by the formula ##STR6## where R is as before, R 4 is hydrogen or alkyl having from 1 to 6 carbon atoms, R 5 is an alkylene radical having from 1 to 4 carbon atoms, R 6 is hydrogen or alkyl having from 1 to 30 carbon atoms, M is a metal selected from among aluminum, barium, cadmium, calcium, chromium, cobalt, nickel, sodium, tin, and zinc and m is 1, 2 or 3.
Claim 19
Dependent Claim
22 words
The system of claim 16 wherein the weight ratio of (a) to (b) is in the approximate range of 0.1:1 to 10:1.
Claim 20
Dependent Claim
19 words
The system of claim 16 wherein said compound (a) is di-(1,2,2,6,6-pentamethyl-4-piperidyl)-2-n-butyl-2-(4-hydroxy-3,5-di-t-butylbenzyl)malonate and said compound (b) is nickel bis(O-ethoxy-3,5-di-t-butyl-4-hydroxybenzyl phosphonate).
Claim 21
Dependent Claim
30 words
The system of claim 16 having additionally incorporated therewith (c) at least one phenolic heat stabilizer, (d) at least one organic phosphite and (e) at least one colorant or pigment.
Claim 22
Dependent Claim
19 words
The system of claim 18 having additionally incorporated therewith (c) tris-(3,5-di-t-butyl-4-hydroxybenzyl)cyanurate, (d) distearyl pentaerythritol diphosphite, and (e) a colorant.
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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) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |