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US4349486A
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Monocarbonate transesterification process
Assignee: General Electric Co
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Filing: 1980-10-31
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Granted: 1982-09-14
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Expires: 2000-10-31
Abstract
Abstract A monocarbonate transesterification process comprising contacting in the presence of a base, a beta-fluoroaliphatic carbonate and a compound selected from the class consisting of monohydroxy aliphatic alcohols, phenols and ortho-positioned dihydroxy aromatic compounds. The resulting monocarbonates are useful as monocarbonates, per se, or useful in the preparation of polycarbonates which can be molded or formed into films, laminates or reinforced plastics by conventional techniques.
Inventors
- 👤 Daniel J. Brunelle
- 👤 William E. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:30
CPC Classifications
C; C07; C07C; C07C68/00; C07C68/06; C07C69/00; C07C69/96
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
310 words
A monocarbonate transesterification process comprising reacting, in the presence of a base; (A) a beta-fluoroaliphatic carbonate which is saturated, unsaturated, linear or branched compound of the formula, ##STR14## where R c is selected from the class of a group of the formula, ##STR15## an alkyl radical, a cycloalkyl, aryl radical and combinations thereof which can be carbo-monocyclic, carbo-polycyclic or fused carbo-polycyclic and can have two or more cyclic systems which are connected to each other by a single or double valence bonds or bi- or multi-valent radicals, with (B) a compound selected from the class consisting of (1) monohydroxy aliphatic alcohols of the formula, R.sup.1 OH where R 1 represents an aliphatic radical or cycloaliphatic radical having a single --OH radical attached directly to the aliphatic or cycloaliphatic carbon atom where the alcohol can be a primary, secondary or tertiary alcohol including carbo-monocyclic, carbo-polycyclic or fused carbo-polycyclic alcohol systems which are connected to each other by single or double valence bonds or bi- or multi-valent radicals; (2) monohydroxy phenol R.sub.b OH wherein R b represents an aryl radical having a single --OH radical attached directly to an aryl ring carbon atom wherein the aryl radical can be carbo-monocyclic, carbo-polycyclic, or fused carbo-polycyclic, and can have two or more cyclic systems which are connected to each other by single or double valence bonds or bi- or multi-valent radicals; and (3) an ortho-positioned dihydroxy aromatic compound of the formula, R.sub.c (OH).sub.n wherein R c represents an aromatic radical having at least two --OH radicals ortho-positioned relative to each other, each hydroxy group being directly attached to adjacent aromatic ring carbon atoms, n being a number at least equal to 2 wherein the R c radical can be carbo-monocyclic, carbo-polycyclic, and can have two or more cyclic systems connected to each other by single or double valence bonds, or bi- or multi-valent radicals.
Claim 2
Dependent Claim
310 words
A monocarbonate transesterification process comprising reacting, in the presence of a base; (A) a beta-fluoroaliphatic carbonate which is saturated, unsaturated, linear or branched compound of the formula, ##STR14## where R c is selected from the class of a group of the formula, ##STR15## an alkyl radical, a cycloalkyl, aryl radical and combinations thereof which can be carbo-monocyclic, carbo-polycyclic or fused carbo-polycyclic and can have two or more cyclic systems which are connected to each other by a single or double valence bonds or bi- or multi-valent radicals, with (B) a compound selected from the class consisting of (1) monohydroxy aliphatic alcohols of the formula, R.sup.1 OH where R 1 represents an aliphatic radical or cycloaliphatic radical having a single --OH radical attached directly to the aliphatic or cycloaliphatic carbon atom where the alcohol can be a primary, secondary or tertiary alcohol including carbo-monocyclic, carbo-polycyclic or fused carbo-polycyclic alcohol systems which are connected to each other by single or double valence bonds or bi- or multi-valent radicals; (2) monohydroxy phenol R.sub.b OH wherein R b represents an aryl radical having a single --OH radical attached directly to an aryl ring carbon atom wherein the aryl radical can be carbo-monocyclic, carbo-polycyclic, or fused carbo-polycyclic, and can have two or more cyclic systems which are connected to each other by single or double valence bonds or bi- or multi-valent radicals; and (3) an ortho-positioned dihydroxy aromatic compound of the formula, R.sub.c (OH).sub.n wherein R c represents an aromatic radical having at least two --OH radicals ortho-positioned relative to each other, each hydroxy group being directly attached to adjacent aromatic ring carbon atoms, n being a number at least equal to 2 wherein the R c radical can be carbo-monocyclic, carbo-polycyclic, and can have two or more cyclic systems connected to each other by single or double valence bonds, or bi- or multi-valent radicals.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein the alcohol is of the formula R'OH and R' is an alkyl radical.
Claim 4
Dependent Claim
19 words
The process of claim 1 wherein the alcohol is of the formula R'OH and R' is an aryl radical.
Claim 5
Dependent Claim
50 words
A monocarbonate transesterification process comprising contacting in the presence of a base, a bis(beta-fluoroaliphatic) carbonate selected from the class consisting of the formulas ##STR16## a monohydroxy-substituted aliphatic or aromatic compound of the formula R.sub.b (OH) where R b is selected from the class consisting of alkyl, cycloalkyl and aryl radicals.
Claim 6
Dependent Claim
50 words
A monocarbonate transesterification process comprising contacting in the presence of a base, a bis(beta-fluoroaliphatic) carbonate selected from the class consisting of the formulas ##STR16## a monohydroxy-substituted aliphatic or aromatic compound of the formula R.sub.b (OH) where R b is selected from the class consisting of alkyl, cycloalkyl and aryl radicals.
Claim 7
Dependent Claim
14 words
The process of claim 4 wherein R b is an C 6-10 aryl radical.
Claim 8
Dependent Claim
18 words
The process of claim 4 wherein R b is a C 1-10 alkyl or C 6-10 cycloalkyl radical.
Claim 9
Dependent Claim
9 words
The process of claim 4 further comprising a solvent.
Claim 10
Dependent Claim
15 words
The process of claim 7 wherein the solvent is a non-, low-, or medium-polar solvent.
Claim 11
Dependent Claim
17 words
The process of claim 8 further comprising separating and recovering a resulting non-fluorinated monocarbonate transesterification reaction product.
Claim 12
Dependent Claim
14 words
The process of claim 5 wherein the monocarbonate transesterification reaction product is diphenyl carbonate.
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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) | 1985-09-13 | 1986-03-15 | 1986-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-13 | 1990-03-15 | 1990-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-13 | 1994-03-15 | 1994-09-14 | $7700.00 | Window Closed / Lapsed |