US5286835A
Expired / Lapsed
US
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Preparation of vinyl ether terminated polyesters
Assignee: SILVER POINT FINANCE AS ADMINISTRATIVE AGENT LLC
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Filing: 1992-08-24
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Granted: 1994-02-15
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Expires: 2012-08-24
Abstract
Abstract Vinyl ether terminated ester oligomers having a range of molecular weights are prepared by reacting a vinyl ether terminated polybasic ester with a polyol in the presence of a catalyst. Continual removal of a hydroxy monovinyl ether avoids formation compounds containing acetal moieties. Alternatively, a polybasic ester is chain extended with a polyol with continual removal of the alcohol by-product. Then, the terminal ester moieties are end capped with a monohydroxy vinyl ether. The oligomers have application in coatings and the like.
Inventors
- 👤 George D. Green
- 👤 James R. Snyder
- 👤 Darryl K. Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:33
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/16; H04N7/167; H04N7/169; H04N7/1696; C; C07; C07C; C07C67/00; C07C67/28; C07C67/29; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C08G63/21; C08G63/66; C08G63/668; C08G63/676; H04N7/173; H04N7/17309; H04N7/17327
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
66 words
A method of preparing vinyl ether terminated polyesters comprising the steps of: (a) reacting a polyol with a vinyl ether terminated polybasic ester in the presence of a transesterification catalyst to produce a vinyl ether terminated oligomer of said polyol and polybasic ester and as a by-product a hydroxy monovinyl ether, and (b) continuously separating said by product hydroxy monovinyl ether during the reaction of (a).
Claim 2
Independent Claim
66 words
A method of preparing vinyl ether terminated polyesters comprising the steps of: (a) reacting a polyol with a vinyl ether terminated polybasic ester in the presence of a transesterification catalyst to produce a vinyl ether terminated oligomer of said polyol and polybasic ester and as a by-product a hydroxy monovinyl ether, and (b) continuously separating said by product hydroxy monovinyl ether during the reaction of (a).
Claim 3
Dependent Claim
27 words
The method of claim 1 wherein said vinyl ether terminated polybasic ester is the reaction product of a polybasic ester and the hydroxy monovinyl ether of (b).
Claim 4
Dependent Claim
65 words
The method of claim 2 wherein said polybasic ester has the formula ##STR4## where Y is a radical having a molecular weight of 14 to above 500 and selected from the group consisting of alkylene, arylene, aralkylene and cycloalkylene radicals X is a radical selected from the group consisting of alkyl having 1 to 6 carbon atoms, arylene, and aralkylene m is 2 to 6.
Claim 5
Dependent Claim
61 words
The method of claim 2 wherein the hydroxy monovinyl ether has the formula R'CH═CR"O--Z--OH R' and R" are mono valent radicals selected from the group consisting of H and alkyl groups having 1-10 carbon atoms where Z is a divalent radical having a molecular weight of 28 to about 500 and selected from the group consisting of alkylene or cycloalkylene radicals
Claim 6
Dependent Claim
43 words
The method of claim 1 wherein said polyol has the formula A-(OH).sub.n where n is 2 to 6, A is a radical selected from the group consisting of alkyl having 2 to 10 carbon atoms, polyesters, linear and cyclic ethers, arylene, or aralkylene
Claim 7
Dependent Claim
29 words
The method of claim 1 wherein said reaction is carried out at a temperature of about 50° to 250° C. and a vacuum of about 0.0133 to 66.7 kPa.abs.
Claim 8
Dependent Claim
30 words
The method of claim 1 wherein the mol ratio of said vinyl ether-terminated polybasic ester to said polyol is between about 1/20 to 20/1, excluding a ratio of exactly 1.0/1.0.
Claim 9
Dependent Claim
19 words
The method of claim 7 wherein said mol ratio is 1/5 to 5/1, excluding a ratio of exactly 1.0/1.0.
Claim 10
Dependent Claim
29 words
The method of claim 2 wherein said vinyl ether-terminated polybasic ester is the reaction product of dimethyl isophthalate and hydroxy butyl vinyl ether and said polyol is poly tetrahydrofuran.
Claim 11
Independent Claim
73 words
A method of preparing vinyl ether terminated polyesters comprising the steps of: (a) reacting a polyol with a polybasic ester in the presence of a transesterification catalyst to produce a chain-extended oligomer of said polyol and poly basic ester and as a by-product an alcohol, continuously separating said alcohol during said reaction, and (b) capping the chain-extended oligomer of (a) by reaction with a hydroxy mono vinyl ether or vinyl ether terminated ester.
Claim 12
Independent Claim
73 words
A method of preparing vinyl ether terminated polyesters comprising the steps of: (a) reacting a polyol with a polybasic ester in the presence of a transesterification catalyst to produce a chain-extended oligomer of said polyol and poly basic ester and as a by-product an alcohol, continuously separating said alcohol during said reaction, and (b) capping the chain-extended oligomer of (a) by reaction with a hydroxy mono vinyl ether or vinyl ether terminated ester.
Claim 13
Dependent Claim
66 words
The method of claim 10 wherein said polybasic ester has the formula ##STR5## where Y is a radical having a molecular weight of 14 to above 500 and selected from the group consisting of alkylene, arylene, aralkylene and cycloalkylene radicals X is a radical selected from the group consisting of alkyl having 1 to 6 carbon atoms, phenyl, and substituted phenyl m is 2 to 6.
Claim 14
Dependent Claim
61 words
The method of claim 10 wherein said hydroxy monovinyl ether has the formula R'CH═CR"O--Z--OH R' and R" are mono valent radicals selected from the group consisting of H and alkyl groups having 1-10 carbon atoms where Z is a divalent radical having a molecular weight of 28 to about 500 and selected from the group consisting of alkylene or cycloalkylene radicals
Claim 15
Dependent Claim
35 words
The method of claim 10 wherein said polyol has the formula A-(OH).sub.n where n is 2 to 6, A is alkyl having 2 to 10 carbon atoms, polyesters, linear and cyclic ethers, arylene, or aralkylene
Claim 16
Dependent Claim
28 words
The method of claim 10 wherein said reaction is carried out at a temperature of about 50° to 250° C. and a vacuum of 0.0133 to 66.7 kPa.abs.
Claim 17
Dependent Claim
28 words
The method of claim 10 wherein the mol ratio of said polybasic ester to said polyol is between about 1/20 to 20/1, excluding a ratio of exactly 1.0/1.0.
Claim 18
Dependent Claim
19 words
The method of claim 10 wherein said mol ratio is 1/5 to 5/1, excluding a ratio of exactly 1.0/1.0.
Claim 19
Dependent Claim
26 words
The method of claim 10 wherein said polyol is polytetrahydrofuran, said polybasic ester is dimethyl isophthalate, and said hydroxy monovinyl ester is hydroxy butyl vinyl ether.
References Cited (Backward Citations)
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