Patent US4540771A successfully refreshed from Google Patents.
US4540771A
Expired / Lapsed
US
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High solids polyester polyols and resinous polyols thereof
Assignee: PPG Industries Inc
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Filing: 1984-10-01
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Granted: 1985-09-10
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Expires: 2004-10-01
Abstract
Abstract There are disclosed herein polyester polyols, resinous polyols thereof, and coating compositions formulated therewith. The polyester polyols are prepared by typically reacting a large excess of low molecular weight polyols with polycarboxylic acid or functional equivalents thereof. The polyols are employed in amounts sufficient to produce reaction products containing a significant amount of unreacted polyols which can be subsequently removed by means such as vacuum distillation.
Inventors
- 👤 Ronald R. Ambrose
- 👤 Wen-Hsuan Chang
- 👤 David T. McKeough
- 👤 John R. Peffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:30
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4205; C08G18/4208; C08G18/4211; C08G18/423; C08G18/4291
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
58 words
A polyester polyol having a number average molecular weight of up to about 1000 which is prepared by reacting a low molecular weight starting polyol with a polycarboxylic acid or a functional equivalent thereof, wherein the starting polyol is in an amount sufficient to produce a reaction product containing about 16 percent or higher of unreacted starting polyol.
Claim 2
Dependent Claim
58 words
A polyester polyol having a number average molecular weight of up to about 1000 which is prepared by reacting a low molecular weight starting polyol with a polycarboxylic acid or a functional equivalent thereof, wherein the starting polyol is in an amount sufficient to produce a reaction product containing about 16 percent or higher of unreacted starting polyol.
Claim 3
Dependent Claim
66 words
A polyester polyol having a number average molecular weight of up to about 1000 which is prepared by reacting: (a) a glycol with (b) a dicarboxylic acid, an anhydride or a lower alkyl ester thereof; the mole ratio of the glycol to the dicarboxylic acid, an anhydride or a lower alkyl ester thereof is about 2.3 to 15:1, wherein the reaction is carried essentially to completion.
Claim 4
Dependent Claim
66 words
A polyester polyol having a number average molecular weight of up to about 1000 which is prepared by reacting: (a) a glycol with (b) a dicarboxylic acid, an anhydride or a lower alkyl ester thereof; the mole ratio of the glycol to the dicarboxylic acid, an anhydride or a lower alkyl ester thereof is about 2.3 to 15:1, wherein the reaction is carried essentially to completion.
Claim 5
Dependent Claim
14 words
A polyester polyol of claim 2, wherein the mole ratio is 2.3 to 4:1.
Claim 6
Dependent Claim
30 words
A polyester polyol of claim 2, wherein the starting glycol is selected from the group consisting of diethylene glycol, neopentyl glycol, 1,6-hexanediol, trimethylpentanediol, 1,4-cyclohexanediol and 1,4-cyclohexanedimethanol, or a mixture thereof.
Claim 7
Dependent Claim
29 words
A polyester polyol of claim 2, wherein the dicarboxylic acid is selected from the group consisting of adipic acid, glutaric acid, hexahydrophthalic acid, phthalic acid, and a mixture thereof.
Claim 8
Dependent Claim
80 words
A polyester polyol having a number average molecular weight of up to about 1000 which is prepared by: (1) reacting a low molecular weight starting polyol with a polycarboxylic acid or a functional equivalent thereof, wherein the starting polyol is in an amount sufficient to produce a reaction product containing about 5 percent or higher of unreacted starting polyol; said reaction is followed by (2) removing about 30 percent by weight of the unreacted starting polyol, under essentially non-reacting conditions.
Claim 9
Dependent Claim
80 words
A polyester polyol having a number average molecular weight of up to about 1000 which is prepared by: (1) reacting a low molecular weight starting polyol with a polycarboxylic acid or a functional equivalent thereof, wherein the starting polyol is in an amount sufficient to produce a reaction product containing about 5 percent or higher of unreacted starting polyol; said reaction is followed by (2) removing about 30 percent by weight of the unreacted starting polyol, under essentially non-reacting conditions.
Claim 10
Dependent Claim
19 words
A polyester polyol of claim 6, wherein the reaction product of (1) contains about 15 percent unreacted starting polyol.
Claim 11
Dependent Claim
19 words
A polyester polyol of claim 7, wherein the reaction product of (1) contains about 30 percent unreacted starting polyol.
Claim 12
Dependent Claim
67 words
A polyester polyol having a number average molecular weight of up to about 1000 which is prepared by: (1) reacting: (a) a glycol with (b) a dicarboxylic acid, a lower alkyl ester or an anhydride thereof; the mole ratio of the glycol to the dicarboxylic acid is 1.5 to 15:1; followed by (2) removing about 30 percent by weight of the unreacted glycol, under essentially non-reacting conditions.
Claim 13
Dependent Claim
67 words
A polyester polyol having a number average molecular weight of up to about 1000 which is prepared by: (1) reacting: (a) a glycol with (b) a dicarboxylic acid, a lower alkyl ester or an anhydride thereof; the mole ratio of the glycol to the dicarboxylic acid is 1.5 to 15:1; followed by (2) removing about 30 percent by weight of the unreacted glycol, under essentially non-reacting conditions.
Claim 14
Dependent Claim
38 words
A polyester polyol of claim 9, wherein the mole ratio of the glycol to the dicarboxylic acid, a lower alkyl ester or an anhydride thereof is about 1.7 to 15:1, wherein the reaction is carried essentially to completion.
Claim 15
Dependent Claim
16 words
A polyester polyol of claim 10, wherein the mole ratio is from about 2 to 4:1.
Claim 16
Dependent Claim
29 words
A polyester polyol of claim 9, wherein the glycol is selected from the group consisting of diethylene glycol, neopentyl glycol, 1,6-hexanediol, trimethylpentanediol, 1,4-cyclohexanediol and 1,4-cyclohexanedimethanol, or a mixture thereof.
Claim 17
Dependent Claim
26 words
A polyester polyol of claim 9, wherein the dicarboxylic acid is selected from the group consisting of adipic acid, glutaric acid, hexahydrophthalic acid and phthalic acid.
Claim 18
Dependent Claim
19 words
A polyester polyol of claim 9, comprising a polyester polyol having a resin solids content of 85 to 100.
Claim 19
Dependent Claim
15 words
A polyester polyol of claim 14, having a resin solids content of 95 to 100.
Claim 20
Dependent Claim
77 words
A polyester-urethane polyol which is prepared by reacting a polyester polyol with a polyisocyanate; the polyester polyol is formed by: (1) reacting a glycol with a dicarboxylic acid, an anhydride or a lower alkyl ester thereof, wherein the glycol is in an amount sufficient to produce a reaction product containing about 5 percent or higher of unreacted glycol; followed by (2) removing at least about 30 percent by weight of the unreacted glycol under essentially non-reacting conditions.
Claim 21
Dependent Claim
77 words
A polyester-urethane polyol which is prepared by reacting a polyester polyol with a polyisocyanate; the polyester polyol is formed by: (1) reacting a glycol with a dicarboxylic acid, an anhydride or a lower alkyl ester thereof, wherein the glycol is in an amount sufficient to produce a reaction product containing about 5 percent or higher of unreacted glycol; followed by (2) removing at least about 30 percent by weight of the unreacted glycol under essentially non-reacting conditions.
Claim 22
Dependent Claim
15 words
A polyester-urethane polyol of claim 16, wherein the polyisocyanate is a diisocyanate comprising trimethylhexamethylene diisocyanate.
Claim 23
Dependent Claim
23 words
A polyester-urethane polyol of claim 16, wherein the polyisocyanate and the polyester polyol are reacted in the equivalent ratio of 0.02 to 0.8:1.
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| 3.5 Years (Year 4) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |