US4543405A
Expired / Lapsed
US
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High solids polyurethane polyols and coating compositions thereof
Assignee: PPG Industries Inc
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Filing: 1984-10-01
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Granted: 1985-09-24
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Expires: 2004-10-01
Abstract
Abstract There are disclosed herein polyurethane polyols and coating compositions formulated therewith. The polyurethane polyols are prepared by typically reacting low molecular weight polyols in amounts sufficient to produce reaction products containing a significant amount of unreacted starting 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 22:56
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/30; C08G18/32; C08G18/3203; C08G18/3206; C08G18/3212; C08G18/38; C08G18/3819; C08G18/3823; C08G18/3831; C08G18/40; C08G18/42; C08G18/4205; C08G18/423; C08G18/46; C08G18/4615; C09; C09D; C09D175/00; C09D175/04
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
51 words
A polyurethane 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 polyisocyanate, wherein the starting polyol is in an amount sufficient to produce a reaction product containing about 5 percent or higher unreacted starting polyol.
Claim 2
Dependent Claim
51 words
A polyurethane 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 polyisocyanate, wherein the starting polyol is in an amount sufficient to produce a reaction product containing about 5 percent or higher unreacted starting polyol.
Claim 3
Dependent Claim
48 words
A polyurethane polyol having an average number molecular wweight of up to about 1000 which is prepared by reacting: (a) a glycol with (b) a diisocyanate; the mole ratio of the glycol to the diisocyanate is about 1.5 to 15:1, wherein the reaction is carried essentially to completion.
Claim 4
Dependent Claim
48 words
A polyurethane polyol having an average number molecular wweight of up to about 1000 which is prepared by reacting: (a) a glycol with (b) a diisocyanate; the mole ratio of the glycol to the diisocyanate is about 1.5 to 15:1, wherein the reaction is carried essentially to completion.
Claim 5
Dependent Claim
14 words
A polyurethane polyol of claim 2, wherein the mole ratio is 1.7 to 4:1.
Claim 6
Dependent Claim
29 words
A polyurethane polyol of claim 2, wherein the diol 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
23 words
A polyurethane polyol of claim 2, wherein the diisocyanate is selected from the group consisting of trimethylhexamethylene diisocyanate, isophorone diisocyanate, and 4,4'-methylene-bis-cyclohexyl isocyanate.
Claim 8
Dependent Claim
74 words
A polyurethane 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 polyisocyanate, 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 or higher of the unreacted starting polyol, under essentially non-reacting conditions.
Claim 9
Dependent Claim
74 words
A polyurethane 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 polyisocyanate, 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 or higher of the unreacted starting polyol, under essentially non-reacting conditions.
Claim 10
Dependent Claim
20 words
A polyurethane polyol of claim 6, wherein the reaction product of (1) contains about 15 percent of unreacted starting polyol.
Claim 11
Dependent Claim
20 words
A polyurethane polyol of claim 7, wherein the reaction product of (1) contains about 30 percent of unreacted starting polyol.
Claim 12
Dependent Claim
65 words
A polyurethane polyol having an average number molecular weight of up to about 1000 which is prepared by: (1) reacting: (a) a glycol with (b) a diisocyanate; wherein the glycol is in an amount sufficient to produce a reaction product containing about 5 percent of higher unreacted glycol; followed by (2) removing about 30 percent or higher of the unreacted glycol, under essentially non-reacting conditions.
Claim 13
Dependent Claim
65 words
A polyurethane polyol having an average number molecular weight of up to about 1000 which is prepared by: (1) reacting: (a) a glycol with (b) a diisocyanate; wherein the glycol is in an amount sufficient to produce a reaction product containing about 5 percent of higher unreacted glycol; followed by (2) removing about 30 percent or higher of the unreacted glycol, under essentially non-reacting conditions.
Claim 14
Dependent Claim
27 words
A polyurethane polyol of claim 9, wherein the glycol is reacted in a mole ratio of about 1.5 to 15:1, wherein the reaction is carried to completion.
Claim 15
Dependent Claim
15 words
A polyurethane polyol of claim 10, wherein the mole ratio is about 2 to 4:1.
Claim 16
Dependent Claim
28 words
A polyurethane 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
22 words
A polyurethane of claim 9, wherein the diisocyanate is selected from the group consisting of trimethylhexamethylene diisocyanate, isophorone diisocyanate, and 4,4'-methylene-bis-cyclohexyl isocyanate.
Claim 18
Dependent Claim
14 words
A polyurethane of claim 9, having a resin solids content of 85 to 100.
Claim 19
Dependent Claim
14 words
A polyurethane of claim 14, having a resin solids content of 95 to 100.
Claim 20
Dependent Claim
10 words
A coating composition comprising the polyurethane polyol of claim 1.
Claim 21
Dependent Claim
27 words
A high solids thermosetting coating composition having a sprayability of at least 40 percent which comprises a curing agent and the high solids composition of claim 6.
Claim 22
Dependent Claim
27 words
A high solids thermosetting coating composition having a sprayability of at least 40 percent which comprises a curing agent and the high solids composition of claim 9.
Claim 23
Dependent Claim
19 words
A high solids thermosetting coating composition of claim 17, wherein the curing agent is a melamine or an isocyanate.
Claim 24
Dependent Claim
19 words
A high solids thermosetting coating composition of claim 18, wherein the curing agent is a melamine or an isocyanate.
References Cited (Backward Citations)
US3248373A
Cited
US4288577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |