US4401802A
Expired / Lapsed
US
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Process for the preparation of thermoplastic aromatic polyphosphonatocarbonates with improved heat-ageing resistance, and their use
Assignee: Bayer AG
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Filing: 1981-01-12
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Granted: 1983-08-30
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Expires: 2001-01-12
Abstract
Abstract Thermoplastic polyphosphonatocarbonates prepared by polycondensing at least one aromatic dihydroxy compound with a diaryl carbonate and a phosphonic acid diaryl ester in the presence of a catalyst selected from the group consisting of (a) tetra-C 1 -C 18 -alkyl titanates, (b) di-C 2 -C 4 -alkyl-tin oxides, (c) di-C 2 -C 4 -alkyl-di-C 1 -C 4 -alkoxy-tin compounds, (d) tetra-C 3 -C 18 -alkyl zirconates, (e) tri-C 2 -C 18 -alkyl vanadylates and (f) mixtures of germanium dioxide or titanium dioxide and at least one of (a) to (e) in a weight ratio of 1:3 to 3:1 at a temperature of from 80°-340° C. and under a pressure of 600 to 0.1 mm Hg in an inert gaseous atmosphere, the molar ratio of diaryl carbonate to phosphonic diaryl ester being from 5:95 to 95:5 and the molar ratio of aromatic dihydroxy compound to the sum of diaryl carbonates and phosphonic diaryl ester being from 0.91:1 to 0.99:1.
Inventors
- 👤 Manfred Schmidt
- 👤 Ludwig Bottenbruch
- 👤 Dieter Freitag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:08
CPC Classifications
C; C08; C08G; C08G64/00; C08G79/00; C08G79/02; C08G79/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
209 words
A process for preparing an aromatic, thermoplastic polyphosphonatocarbonate of improved heat-ageing resistance which comprises polycondensing (A) at least one aromatic dihydroxy compound having 6 to 30 carbon atoms with (B) a diaryl carbonate having 6 to 14 carbon atoms in each aryl moiety and (C) a phosphonic acid diaryl ester having 6 to 14 carbon atoms in each aryl moiety in the presence of 10 -7 to 2.10 -2 mole percent, per mole of aromatic dihydroxy compound, of at least one catalyst selected from the group consisting of (a) tetra-C 1 -C 18 -alkyl titanates, (b) di-C 2 -C 4 -alkyl-tin oxides, (c) di-C 2 -C 4 -alkyl-di-C 1 -C 4 -alkoxy-tin compounds, (d) tetra-C 3 -C 18 -alkyl zirconates, (e) tri-C 2 -C 18 -alkyl vanadylates and (f) mixtures of germanium dioxide or titanium dioxide with at least one of the catalysts listed under (a) to (e), in a weight ratio of 1:3 to 3:1 at a temperature of from 80°-340° C. and under a pressure of from 600 to 0.1 mm Hg in an inert gaseous atmosphere, the molar ratio of (B) to (C) being from 5:95 to 95:5 and the molar ratio of (A) to the sum of (B) and (C) being from 0.91:1 to 0.99:1.
Claim 2
Dependent Claim
209 words
A process for preparing an aromatic, thermoplastic polyphosphonatocarbonate of improved heat-ageing resistance which comprises polycondensing (A) at least one aromatic dihydroxy compound having 6 to 30 carbon atoms with (B) a diaryl carbonate having 6 to 14 carbon atoms in each aryl moiety and (C) a phosphonic acid diaryl ester having 6 to 14 carbon atoms in each aryl moiety in the presence of 10 -7 to 2.10 -2 mole percent, per mole of aromatic dihydroxy compound, of at least one catalyst selected from the group consisting of (a) tetra-C 1 -C 18 -alkyl titanates, (b) di-C 2 -C 4 -alkyl-tin oxides, (c) di-C 2 -C 4 -alkyl-di-C 1 -C 4 -alkoxy-tin compounds, (d) tetra-C 3 -C 18 -alkyl zirconates, (e) tri-C 2 -C 18 -alkyl vanadylates and (f) mixtures of germanium dioxide or titanium dioxide with at least one of the catalysts listed under (a) to (e), in a weight ratio of 1:3 to 3:1 at a temperature of from 80°-340° C. and under a pressure of from 600 to 0.1 mm Hg in an inert gaseous atmosphere, the molar ratio of (B) to (C) being from 5:95 to 95:5 and the molar ratio of (A) to the sum of (B) and (C) being from 0.91:1 to 0.99:1.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein said reaction is carried out at a temperature of from 100° to 320° C.
Claim 4
Dependent Claim
20 words
The process of claim 1 wherein the reaction is carried out at a pressure of 350 to 1.0 mm Hg.
Claim 5
Dependent Claim
18 words
The process of claim 1 wherein the molar ratio of (B) to (C) is from 15:85 to 85:15.
Claim 6
Dependent Claim
36 words
The process of claim 1 wherein (A), (B) and (C) are polycondensed with 0.05 to 3 mole percent, based on 100 mole percent of (A), of a branching agent having at least three phenolic --OH moieties.
Claim 7
Dependent Claim
38 words
The process of claim 1 wherein (A), (B) and (C) are polycondensed with 0.05 to 3 mole percent, based on 100 mole percent of the sum of (B) and (C), of a branching agent which comprises triaryl phosphate.
Claim 8
Dependent Claim
228 words
The process of claim 1 wherein component (A) is a compound of the formula ##STR17## wherein A is a single bond, alkylene having 2 to 4 carbon atoms, alkylidene having 1 to 5 carbon atoms, cycloalkylene having 5 or 6 carbon atoms, cycloalkylidene having 5 or 6 carbon atoms, sulphonyl, carbonyl, oxygen or sulphur; e is the number 1 or zero; Z is fluoro, chloro, bromo or alkyl having 1 to 4 carbon atoms; d is zero or an integer from 1 to 4; and f is zero or an integer from 1 to 3; component (B) is a compound of the formula ##STR18## wherein Ar is aryl having 6 to 14 carbon atoms; and component (C) is a compound of the formula ##STR19## wherein Y is alkyl having 1 to 4 carbon atoms, F, Cl, or Br; p is zero or an integer from 1 to 5 and R is alkyl having to 12 carbon atoms, alkenyl having 2 to 12 carbon atoms, cycloalkyl having 6 to 30 carbon atoms, cycloalkenyl having 6 to 30 carbon atoms, aryl having 6 to 30 carbon atoms, arylalkyl having 7 to 30 carbon atoms, or arylalkenyl having 8 to 30 carbon atoms with the aryl moieties being unsubstituted or substituted by one to five alkyls having 1 to 4 carbon atoms, one to five halogens or both alkyl and halogen.
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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) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |