US5608027A
Expired / Lapsed
US
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Complex stabilizer composition to improve the melt stability and color stability of polycarbonates
Assignee: SABIC Global Technologies BV
•
Filing: 1995-11-22
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Granted: 1997-03-04
•
Expires: 2015-11-22
Abstract
Abstract A composition comprising a phosphorus containing acid and an ester of a phosphorus containing acid useful for imparting improved physical and chemical properties to polymers containing polyesters, copolyester carbonates, polycarbonates, and mixtures thereof, a method of treating said polymers with said composition, and articles of manufacture comprising said polymers and said composition.
Inventors
- 👤 Richard Crosby
- 👤 James L. DeRudder
- 👤 Larry I. Flowers
- 👤 Ye-Gang Lin
- 👤 Roy R. Odle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:10
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K3/00; C08K3/32
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
168 words
A composition for treating a thermoplastic polymer comprising: (1) a phosphorus containing acid of the formula H.sub.m P.sub.t O.sub.n where m and n are each 2 or greater and t is 1 or greater and (2) an ester of a phosphorus containing acid of the formula (R.sub.1 O)(R.sub.2 O)(R.sub.3 O.sub.w)H.sub.x P.sub.y O.sub.z-3 where w is 0 or 1, where x is zero or a positive integer, z is 3 or greater, y is 1 or greater, and R 1 , R 2 and R 3 are the same or different organic radicals selected from the group of substituted aryl substituents having the formula: ##STR2## where R 4 , R, 5 , and R 6 may be the same or different and wherein R 4 , R 5 , and R 6 are selected from the group consisting of alkyl radicals having from one to nine carbon atoms and hydrogen, subject to the limitation that at least one of R4, R 5 , and R 6 is not hydrogen.
Claim 2
Dependent Claim
168 words
A composition for treating a thermoplastic polymer comprising: (1) a phosphorus containing acid of the formula H.sub.m P.sub.t O.sub.n where m and n are each 2 or greater and t is 1 or greater and (2) an ester of a phosphorus containing acid of the formula (R.sub.1 O)(R.sub.2 O)(R.sub.3 O.sub.w)H.sub.x P.sub.y O.sub.z-3 where w is 0 or 1, where x is zero or a positive integer, z is 3 or greater, y is 1 or greater, and R 1 , R 2 and R 3 are the same or different organic radicals selected from the group of substituted aryl substituents having the formula: ##STR2## where R 4 , R, 5 , and R 6 may be the same or different and wherein R 4 , R 5 , and R 6 are selected from the group consisting of alkyl radicals having from one to nine carbon atoms and hydrogen, subject to the limitation that at least one of R4, R 5 , and R 6 is not hydrogen.
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein the acid is phosphorous acid.
Claim 4
Dependent Claim
11 words
The composition of claim 1 wherein the acid is phosphoric acid.
Claim 5
Dependent Claim
10 words
The composition of claim 1 wherein the ester is tris(nonylphenyl)phosphite.
Claim 6
Dependent Claim
10 words
The composition of claim 2 wherein the ester is tris(nonylphenyl)phosphite.
Claim 7
Dependent Claim
10 words
The composition of claim 3 wherein the ester is tris(nonylphenyl)phosphite.
Claim 8
Dependent Claim
178 words
A thermoplastic polymer containing an effective amount of a composition for stabilizing the color and viscosity of said thermoplastic polymer comprising: (1) a phosphorus containing acid of the formula where m and n are each 2 or greater and t is 1 or greater, and (2) an ester of a phosphorus containing acid of the formula (R.sub.1 O)(R.sub.2 O)(R.sub.3 O.sub.w)H.sub.x P.sub.y O.sub.z-3 where w is 0 or 1, where x is zero or a positive integer and z is 3 or greater, y is 1 or greater, and R 1 , R 2 and R 3 are the same or different organic radicals selected from substituted aryl substituents having the formula: ##STR3## where R 4 , R 5 , and R 6 may be the same or different and wherein R 4 , R 5 , and R 6 are selected from the group consisting of alkyl radicals having from one to nine carbon atoms and hydrogen, subject to the limitation that at least one of R 4 , R 5 , and R 6 is not hydrogen.
Claim 9
Dependent Claim
178 words
A thermoplastic polymer containing an effective amount of a composition for stabilizing the color and viscosity of said thermoplastic polymer comprising: (1) a phosphorus containing acid of the formula where m and n are each 2 or greater and t is 1 or greater, and (2) an ester of a phosphorus containing acid of the formula (R.sub.1 O)(R.sub.2 O)(R.sub.3 O.sub.w)H.sub.x P.sub.y O.sub.z-3 where w is 0 or 1, where x is zero or a positive integer and z is 3 or greater, y is 1 or greater, and R 1 , R 2 and R 3 are the same or different organic radicals selected from substituted aryl substituents having the formula: ##STR3## where R 4 , R 5 , and R 6 may be the same or different and wherein R 4 , R 5 , and R 6 are selected from the group consisting of alkyl radicals having from one to nine carbon atoms and hydrogen, subject to the limitation that at least one of R 4 , R 5 , and R 6 is not hydrogen.
Claim 10
Dependent Claim
11 words
The polymer of claim 7 wherein the acid is phosphorous acid.
Claim 11
Dependent Claim
11 words
The polymer of claim 7 wherein the acid is phosphoric acid.
Claim 12
Dependent Claim
10 words
The polymer of claim 8 wherein the ester is tris(nonylphenyl)phosphite.
Claim 13
Dependent Claim
10 words
The polymer of claim 9 wherein the ester is tris(nonylphenyl)phosphite.
Claim 14
Dependent Claim
11 words
The polymer of claim 10 wherein said polymer comprises a polycarbonate.
Claim 15
Dependent Claim
11 words
The polymer of claim 11 wherein said polymer comprises a polycarbonate.
Claim 16
Dependent Claim
22 words
The polymer of claim 7 wherein the acid is present in an amount ranging from about 0.00005 phr to about 0.1000 phr.
Claim 17
Dependent Claim
22 words
The polymer of claim 7 wherein the ester is present in an amount ranging from about 0.00035 phr to about 0.7000 phr.
Claim 18
Dependent Claim
27 words
The polymer of claim 7 wherein the acid and ester are present in a ratio of about one equivalent of acid to about two moles of ester.
Claim 19
Dependent Claim
11 words
The polymer of claim 7 additionally comprising a hindered phosphite ester.
Claim 20
Dependent Claim
12 words
The polymer of claim 17 wherein the hindered phosphite ester is tris(2,4-di-tertiary-butylphenyl)phosphite.
Claim 21
Dependent Claim
22 words
The composition of claim 14 wherein the tris(2,4-di-tertiarybutylphenyl)phosphite is present in an amount ranging from about 0.0001 phr to about 0.200 phr.
Claim 22
Dependent Claim
12 words
The polymer of claim 17 wherein the unhindered phosphite ester is tetrakis(2,4-di-tertiary-butylphenyl)-1,1'-biphenyl-4,4'-diylbisphosphonite.
Claim 23
Dependent Claim
190 words
A thermoplastic polymer containing an effective amount of a composition for stabilizing the color and viscosity of said thermoplastic polymer consisting essentially of: (1) a phosphorus containing acid, and (2) an ester of a phosphorus containing acid, wherein the phosphorus containing acid has the formula: H.sub.m P.sub.t O.sub.n where m and n are each 2 or greater, and t is 1 or greater, wherein the ester has the formula: (R.sub.1 O)(R 2O)(R.sub.3 O.sub.w)H.sub.x P.sub.y O.sub.z-3 where w is 0 or 1, where x is zero or a positive integer and z is 3 or greater, y is 1 or greater, and R 1 , R 2 and R 3 are the same or different radicals selected from substituted aryl substituents having the formula: ##STR4## where R 4 , R 5 , and R 6 may be the same or different and wherein R 4 , R 5 , and R 6 are selected from the group consisting of alkyl radicals having from one to nine carbon atoms and hydrogen, subject to the limitation that at least one of R 4 , R 5 , and R 6 is not hydrogen.
Claim 24
Dependent Claim
190 words
A thermoplastic polymer containing an effective amount of a composition for stabilizing the color and viscosity of said thermoplastic polymer consisting essentially of: (1) a phosphorus containing acid, and (2) an ester of a phosphorus containing acid, wherein the phosphorus containing acid has the formula: H.sub.m P.sub.t O.sub.n where m and n are each 2 or greater, and t is 1 or greater, wherein the ester has the formula: (R.sub.1 O)(R 2O)(R.sub.3 O.sub.w)H.sub.x P.sub.y O.sub.z-3 where w is 0 or 1, where x is zero or a positive integer and z is 3 or greater, y is 1 or greater, and R 1 , R 2 and R 3 are the same or different radicals selected from substituted aryl substituents having the formula: ##STR4## where R 4 , R 5 , and R 6 may be the same or different and wherein R 4 , R 5 , and R 6 are selected from the group consisting of alkyl radicals having from one to nine carbon atoms and hydrogen, subject to the limitation that at least one of R 4 , R 5 , and R 6 is not hydrogen.
Claim 25
Dependent Claim
33 words
A method for improving the stabilization of the physical and chemical properties of a thermoplastic polymer comprising: (1) preparing said thermoplastic polymer, and (2) treating said polymer with the composition of claim 1.
Claim 26
Dependent Claim
20 words
The method of claim 22 wherein said thermoplastic polymer is selected from the group consisting of polyesters, copolyesterpolycarbonates, and polycarbonates.
Claim 27
Dependent Claim
11 words
The method of claim 23 wherein the acid is phosphorous acid.
Claim 28
Dependent Claim
11 words
The method of claim 23 wherein the acid is phosphoric acid.
Claim 29
Dependent Claim
10 words
The method of claim 24 wherein the ester is tris(nonylphenyl)phosphite.
Claim 30
Dependent Claim
10 words
The method of claim 25 wherein the ester is tris(nonylphenyl)phosphite.
Claim 31
Dependent Claim
195 words
In a method for the stabilization of thermoplastic polymers by the addition of esters of phosphorus containing acids having the formula: (R.sub.1 O)(R.sub.2 O)(R.sub.3 O.sub.w)H.sub.x P.sub.y O.sub.z-3 where w is 0 or 1, where x is zero or a positive integer and z is 3 or greater, y is 1 or greater, and R 1 , R 2 , and R 3 are the same or different organic radicals selected from substituted aryl substituents having the formula: ##STR5## where R 4 , R 5 , and R 6 may be the same or different and wherein R 4 , R 5 , and R 6 are selected from the group consisting of alkyl radicals having from one to nine carbon atoms and hydrogen, subject to the limitation that at least one of R 4 , R 5 , and R 6 is not hydrogen to said thermoplastic polymers; the improvement consisting essentially of the addition of a phosphorus containing acid having the formula: H.sub.m P.sub.t O.sub.n where m and n are each 2 or greater, and t is 1 or greater whereby catalysts, catalyst residues and other additives are deactivated and the polymer is stabilized.
Claim 32
Dependent Claim
195 words
In a method for the stabilization of thermoplastic polymers by the addition of esters of phosphorus containing acids having the formula: (R.sub.1 O)(R.sub.2 O)(R.sub.3 O.sub.w)H.sub.x P.sub.y O.sub.z-3 where w is 0 or 1, where x is zero or a positive integer and z is 3 or greater, y is 1 or greater, and R 1 , R 2 , and R 3 are the same or different organic radicals selected from substituted aryl substituents having the formula: ##STR5## where R 4 , R 5 , and R 6 may be the same or different and wherein R 4 , R 5 , and R 6 are selected from the group consisting of alkyl radicals having from one to nine carbon atoms and hydrogen, subject to the limitation that at least one of R 4 , R 5 , and R 6 is not hydrogen to said thermoplastic polymers; the improvement consisting essentially of the addition of a phosphorus containing acid having the formula: H.sub.m P.sub.t O.sub.n where m and n are each 2 or greater, and t is 1 or greater whereby catalysts, catalyst residues and other additives are deactivated and the polymer is stabilized.
Claim 33
Dependent Claim
11 words
The method of claim 28 wherein the polymer is a polycarbonate.
Claim 34
Dependent Claim
11 words
The method of claim 29 wherein the acid is phosphorous acid.
Claim 35
Dependent Claim
11 words
The method of claim 29 wherein the acid is phosphoric acid.
Claim 36
Dependent Claim
10 words
The method of claim 30 wherein the ester is tris(nonylphenyl)phosphite.
Claim 37
Dependent Claim
10 words
The method of claim 31 wherein the ester is tris(nonylphenyl)phosphite.
Claim 38
Dependent Claim
10 words
An article of manufacture comprising the polymer of claim 12.
Claim 39
Dependent Claim
10 words
An article of manufacture comprising the polymer of claim 13.
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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) | 2000-03-03 | 2000-09-02 | 2001-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-03 | 2004-09-02 | 2005-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-03 | 2008-09-02 | 2009-03-04 | $7700.00 | Window Closed / Lapsed |