Patent EP0130512A2 successfully refreshed from Google Patents.
EP0130512A2
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Boron- and nitrogen-containing compositions and their use in polycarbonate and polyester-polycarbonate synthesis
Assignee: General Electric Co
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Filing: 1984-06-23
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Granted: —
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Expires: 2004-06-23
Abstract
Abstract Boron- and nitrogen-containing compositions prepared by the reaction of a quaternary ammonium hydroxide with a trialkyl or triaryl borate are useful for the preparation of the active catalyst species in the transesterification of reaction for the production of poly-carbonates or polyester-polycarbonates from diaryl carbonates (optionally in admixture with diaryl dicarboxylates) and dihydroxyaromatic compounds.
Inventors
- 👤 Daniel Joseph Brunelle
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 13:40
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/64; C08G64/00; C08G64/20; C08G64/30; C08G64/307
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
120 words
A method for preparing a boron- and nitrogen-containing composition which comprises preparing a mixture containing (A) at least one quaternary ammonium hydroxide having the formula wherein each R 1 is independently an alkyl radical containing about 1-4 carbon atoms or an aryl or aralkyl radical containing about 6-10 carbon atoms; and (B) at least one borate having the formula wherein each R 2 is independently a lower alkyl radical or a radical of the formula X n Ar 1 , Ar l is an aromatic hydrocarbon radical containing about 6-10 carbon atoms, each X is independently an electron-withdrawing substituent and n is a number fran 0 to the number of aromatic carbon atoms in Ar which are capable of substitution.
Claim 2
Independent Claim
120 words
A method for preparing a boron- and nitrogen-containing composition which comprises preparing a mixture containing (A) at least one quaternary ammonium hydroxide having the formula wherein each R 1 is independently an alkyl radical containing about 1-4 carbon atoms or an aryl or aralkyl radical containing about 6-10 carbon atoms; and (B) at least one borate having the formula wherein each R 2 is independently a lower alkyl radical or a radical of the formula X n Ar 1 , Ar l is an aromatic hydrocarbon radical containing about 6-10 carbon atoms, each X is independently an electron-withdrawing substituent and n is a number fran 0 to the number of aromatic carbon atoms in Ar which are capable of substitution.
Claim 3
Dependent Claim
19 words
A method according to claim 1 wherein each R 1 is alkyl and all R radicals are the same.
Claim 4
Dependent Claim
12 words
A method according to claim 2 wherein n is 0 or 1.
Claim 5
Dependent Claim
24 words
A method according to claim 3 wherein each R 2 is C 1-4 alkyl or phenyl and all R 2 radicals are the same.
Claim 6
Dependent Claim
17 words
A method according to claim 4 wherein the mixture contains equimolar proportions of reagents A and B.
Claim 7
Dependent Claim
12 words
A method according to claim 5 wherein reagent A is tetramethylammonium hydroxide.
Claim 8
Dependent Claim
12 words
A method according to claim 6 wherein reagent 8 is tri-n-butyl borate.
Claim 9
Dependent Claim
12 words
A method according to claim 6 wherein reagent B is triphenyl borate.
Claim 10
Dependent Claim
79 words
A method according to claim 1 wherein said mixture additionally comprises (C) at least one compound selected from the group consisting of (C-1) hydroxyaromatic compounds having the formula wherein Ar' is an aromatic hydrocarbon radical containing about 6-10 carbon atoms, each X is independently an electron-withdrawing substituent and n is a number from 0 to the number of aromatic carbon atoms in Ar l which are capable of substitution; and (C-2) carbonates of said hydroxyaromatic compounds having the formula
Claim 11
Dependent Claim
12 words
A method according to claim 9 wherein n is 0 or 1.
Claim 12
Dependent Claim
14 words
A method according to claim 10 wherein Ar is phenyl and n is 0.
Claim 13
Dependent Claim
12 words
A boron- and nitrogen-containing composition prepared by the method of claim 1.
Claim 14
Dependent Claim
12 words
A boron- and nitrogen-containing composition prepared by the method of claim 3.
Claim 15
Dependent Claim
12 words
A boron- and nitrogen-containing composition prepared by the method of claim 6.
Claim 16
Dependent Claim
12 words
A boron- and nitrogen-containing composition prepared by the method of claim 7.
Claim 17
Dependent Claim
12 words
A boron- and nitrogen-containing composition prepared by the method of claim 8.
Claim 18
Dependent Claim
46 words
In a method for preparing a condensation polymer which comprises catalytically reacting at least one diaryl carbonate with at. least one dihydroxyaromatic compound, the improvement which comprises preparing the catalyst by incorporating in the reaction mixture a minor amount of a composition according to claim 12.
Claim 19
Dependent Claim
23 words
A method according to claim 17 wherein the molar ratio of diaryl carbonate to reagent B is from about 10:1 to about 500:1.
Claim 20
Dependent Claim
53 words
A method according to claim 18 wherein the diaryl carbonate has the formula wherein Ar l is an aromatic radical containing about 6-10 carbon atoms, each X is independently an electron-withdrawing substituent and n is a number from 0 to the number of aromatic carbon atoms in Ar which are capable of substitution.
Claim 21
Dependent Claim
16 words
A method according to claim 19 wherein the dihydroxyaromatic compound is bisphenol A or 1,T-di- chloro-2,2-bis(4-hydroxyphenyl)ethylene
Claim 22
Dependent Claim
13 words
A method according to claim 20 wherein the diaryl carbonate is diphenyl carbonate.
Claim 23
Dependent Claim
15 words
. 22. A method according to claim 21 wherein the dihydroxyaromatic compound is bisphenol A.
Claim 24
Dependent Claim
27 words
A method according to claim 20 wherein reagent B is prepared in situ by adding boric acid to the reaction mixture or the diaryl carbonate constituent thereof.
Claim 25
Dependent Claim
13 words
A method according to claim 23 wherein the diaryl carbonate is diphenyl carbonate.
Claim 26
Dependent Claim
13 words
A method according to claim 24 wherein the dinydroxyaromatic compound is bisphenol A.
Claim 27
Dependent Claim
35 words
A method according to claim 17 wherein the reaction mixture also contains at least one diester having the formula wherein Ar 2 is an aromatic hydrocarbon or substituted hydrocarbon radical containing about 6-10 carbon atoms.
Claim 28
Dependent Claim
26 words
A method according to claim 26 wherein the molar ratio of the diaryl carbonate diester combination to reagent B is from about 10:1 to about 500:1.
Claim 29
Dependent Claim
14 words
A method according to claim 27 wherein the diester is diphenyl isophthalate or terephthalate.
References Cited (Backward Citations)
No citation records indexed.
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