US5240986A
Expired / Lapsed
US
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Polycarbonate resin composition
Assignee: Idemitsu Petrochemical Co Ltd
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Filing: 1990-08-23
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Granted: 1993-08-31
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Expires: 2010-08-23
Abstract
Abstract The present invention relates to a polycarbonate resin composition comprising: 100 parts by weight of a polycarbonate resin; (A) 0.05 to 1 part by weight of long chain aliphatic alcohol represented by the general formula: C n H 2n+1 OH wherein n is 25 or more; and (B) 0 to 0.001 part by weight as phosphorus atom of at least one phosphorus compound selected from the group consisting of phosphorous acid and phosphorous acid esters The composition of the present invention is excellent in heat resistance and hydrolytic resistance, and further has good mold releasing properties. Thus the composition of the present invention can be used in production of electric and electronic devices, office automation machines, and structural parts by application of various molding methods
Inventors
- 👤 Kazunari Ohtsubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:11
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K3/00; C08K3/32; C08K5/49; C08K5/51; C08K5/52; C08K5/524; C08K5/526; C08L; C08L69/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
89 words
A polycarbonate resin composition consisting of 100 parts by weight of a polycarbonate resin; (A) 0.05 to 1 part by weight of a long chain aliphatic alcohol of the formula C n H 2n+1 OH, wherein n is at least 25; and (B) at least one phosphorus compound selected from the group consisting of phosphorous acid and a phosphorous acid ester, said phosphorus compound contained in an amount of no greater than 0.001 part by weight as a phosphorus atom to 100 parts by weight of the polycarbonate resin.
Claim 2
Dependent Claim
89 words
A polycarbonate resin composition consisting of 100 parts by weight of a polycarbonate resin; (A) 0.05 to 1 part by weight of a long chain aliphatic alcohol of the formula C n H 2n+1 OH, wherein n is at least 25; and (B) at least one phosphorus compound selected from the group consisting of phosphorous acid and a phosphorous acid ester, said phosphorus compound contained in an amount of no greater than 0.001 part by weight as a phosphorus atom to 100 parts by weight of the polycarbonate resin.
Claim 3
Dependent Claim
109 words
A polycarbonate resin composition consisting of 100 parts by weight of a polycarbonate resin; (A) 0.05 to 1 part by weight of a long chain aliphatic alcohol of the formula C n H 2n+1 OH, wherein n is at least 25; (B) at least one phosphorus compound selected from the group consisting of phosphorous acid and a phosphorous acid ester, said phosphorus compound contained in an amount of no greater than 0.01 part by weight as a phosphorus atom to 100 parts by weight of the polycarbonate resin; and (C) 0.05 to 1 part by weight of a parafin wax to 100 parts by weight of the polycarbonate resin.
Claim 4
Dependent Claim
109 words
A polycarbonate resin composition consisting of 100 parts by weight of a polycarbonate resin; (A) 0.05 to 1 part by weight of a long chain aliphatic alcohol of the formula C n H 2n+1 OH, wherein n is at least 25; (B) at least one phosphorus compound selected from the group consisting of phosphorous acid and a phosphorous acid ester, said phosphorus compound contained in an amount of no greater than 0.01 part by weight as a phosphorus atom to 100 parts by weight of the polycarbonate resin; and (C) 0.05 to 1 part by weight of a parafin wax to 100 parts by weight of the polycarbonate resin.
Claim 5
Dependent Claim
21 words
The composition as claimed in claim 1, wherein the polycarbonate resin has a viscosity average molecular weight of 10,000 to 100,000.
Claim 6
Dependent Claim
30 words
The composition as claimed in claim 1, wherein the amount of the component (A) is 0.07 to 0.8 part by weight per 100 parts by weight of the polycarbonate resin.
Claim 7
Dependent Claim
27 words
The composition as claimed in claim 1, wherein the phosphorus compound is a phosphorous acid ester selected from the group consisting of trisnonylphenyl phosphite and trisphenyl phosphite.
Claim 8
Dependent Claim
34 words
The composition as claimed in claim 1, wherein the amount of the component (B) is 0 to 0.0008 part by weight as a phosphorus atom per 100 parts by weight of the polycarbonate resin.
Claim 9
Dependent Claim
25 words
The composition as claimed in claim 1, wherein the phosphorus compound is a phosphorous acid ester selected from the group consisting of monophosphites and diphosphites.
Claim 10
Dependent Claim
25 words
The composition as claimed in claim 7, wherein the phosphorous acid ester is a monophosphite selected from the group consisting of tris(2,4-di-tertbutylphenyl)phosphite, tris(monononylphenyl)phosphite and tris(di-nonylphenyl)phosphite.
Claim 11
Dependent Claim
61 words
The composition as claimed in claim 7, wherein the phosphorous acid ester is a diphosphite of the formula ##STR3## wherein R 5 and R 6 are the same or different and are independently an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms or an aryl group having 6 to 20 carbon atoms.
Claim 12
Dependent Claim
37 words
The composition as claimed in claim 7, wherein the phosphorous acid ester is a diphosphite selected from the group consisting of distearylpentaerythritol diphosphite, dioctylpentaerythritol diphosphite, diphenylpentaerythritol diphosphite, bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite, dicyclohexylpentaerythritol diphosphite and tetrakis (2,4-di-tert-butylphenyl)-4,4'-biphenylene phosphite.
Claim 13
Dependent Claim
32 words
The composition as claimed in claim 1, wherein the polycarbonate is bisphenol A polycarbonate; the long chain aliphatic alcohol is C 26 H 53 OH; and the phosphorus compound is trisnonylphenyl phosphite.
Claim 14
Dependent Claim
88 words
The polycarbonate resin composition as claimed in claim 1, wherein the polycarbonate resin has a viscosity average molecular weight of 14,000 to 35,000; the amount of the component (A) is 0.07 to 0.8 part by weight per 100 parts by weight of the polycarbonate resin; the phosphorus compound is a phosphorous acid ester selected from the group consisting of trisnonylphenyl phosphite and trisphenyl phosphite; and the amount of the component (B) is no more than 0.0008 part by weight per 100 parts by weight of the polycarbonate resin.
Claim 15
Dependent Claim
44 words
The composition as claimed in claim 1, wherein the polycarbonate resin is of the formula ##STR4## wherein R 1 , R 2 , R 3 and R 4 , independently of each other are, a hydrogen atom, a hydrocarbon group or a halogen atom.
Claim 16
Dependent Claim
22 words
The composition as claimed in claim 13, wherein the alcohol is selected from the group consisting of hexacosanol-1, octacosanol-1, nacosanol and melissyl.
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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) | 1996-08-30 | 1997-03-01 | 1997-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-30 | 2001-03-01 | 2001-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-30 | 2005-03-01 | 2005-08-31 | $7700.00 | Window Closed / Lapsed |