US4298511A
Expired / Lapsed
US
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Urethane rheology modifiers and compositions containing same
Assignee: PPG Industries Ohio Inc
•
Filing: 1980-08-01
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Granted: 1981-11-03
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Expires: 2000-08-01
Abstract
Abstract Rheology modifiers useful in water-and organic solvent-based compositions are derived from the reaction of polyalkylene oxide, polyfunctional material, diisocyanate and water. The modifiers are characterized by having a branched structure and containing substantially no terminal hydrophobic groups.
Inventors
- 👤 Karl F. Schimmel
- 👤 Jerome A. Seiner
- 👤 Rostyslaw Dowbenko
- 👤 Roger M. Christenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:47
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/302; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6674; C08G18/6677; C08G18/70; C08G18/72; C08G18/721; C09; C09D; C09D7/00; C09D7/40; C09D7/43; C08L; C08L75/00; C08L75/04
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
95 words
A urethane rheology modifier characterized in having a branched structure, substantially no terminal hydrophobic groups and capable of modifying the rheology properties of water-based and organic solvent-based compositions, derived from the reaction of (a) for each from about 8 moles to about 14 moles of a polyalkylene oxide having a molecular weight of from about 2,000 to about 20,000; (b) from about 0.5 moles to about 5 moles of a polyfunctional material; (c) from about 9 moles to about 90 moles of a diisocyanate; and (d) from about 3 moles to about 70 moles water.
Claim 2
Dependent Claim
95 words
A urethane rheology modifier characterized in having a branched structure, substantially no terminal hydrophobic groups and capable of modifying the rheology properties of water-based and organic solvent-based compositions, derived from the reaction of (a) for each from about 8 moles to about 14 moles of a polyalkylene oxide having a molecular weight of from about 2,000 to about 20,000; (b) from about 0.5 moles to about 5 moles of a polyfunctional material; (c) from about 9 moles to about 90 moles of a diisocyanate; and (d) from about 3 moles to about 70 moles water.
Claim 3
Dependent Claim
31 words
The rheology modifier of claim 1 wherein the polyfunctional material has at least 3 active hydrogens capable of reacting with isocyanate or is a polyisocyanate having at least 3 isocyanate groups.
Claim 4
Dependent Claim
24 words
The rheology modifier of claim 2 wherein the polyfunctional material is selected from the group consisting of polyols, amines, amine alcohols, thiols and polyisocyanates.
Claim 5
Dependent Claim
13 words
The rheology modifier of claim 3 wherein the polyfunctional material is a polyol.
Claim 6
Dependent Claim
13 words
The rheology modifier of claim 4 wherein the polyol is a trifunctional alcohol.
Claim 7
Dependent Claim
12 words
The rheology modifier of claim 5 wherein the trifunctional alcohol is trimethylolpropane.
Claim 8
Dependent Claim
16 words
The rheology modifier of claims 1 or 6 wherein the polyalkylene oxide is a polyethylene oxide.
Claim 9
Dependent Claim
21 words
The rheology modifier of claim 7 wherein the polyethylene oxide has a molecular weight of from about 4000 to about 12,000.
Claim 10
Dependent Claim
26 words
The rheology modifier of claim 8 wherein the diisocyanate is selected from the group consisting of toluene diisocyanate, isophorone diisocyanate, bis para-isocyanato cyclohexylmethane and mixtures thereof.
Claim 11
Dependent Claim
57 words
The rheology modifier of claim 1 wherein the rheology modifier is derived from the reaction of (a) for each from about 9 moles to about 12 moles of the polyalkylene oxide; (b) from about 1 mole to about 3 moles of the polyfunctional alcohol; and (c) from about 20 moles to about 35 moles of the diisocyanate.
Claim 12
Dependent Claim
22 words
The rheology modifier of claim 10 wherein from about 5 moles to about 38 moles of water is used in the reaction.
Claim 13
Dependent Claim
22 words
The rheology modifier of claim 11 wherein from about 8 moles to about 25 moles of water is used in the reaction.
Claim 14
Dependent Claim
17 words
The rheology modifier of claim 12 wherein polyethylene oxide, trimethylolpropane, bis para-isocyanato cyclohexylmethane and water are reacted.
Claim 15
Dependent Claim
124 words
A process for making a urethane rheology modifier characterized in having a branched structure, substantially no terminal hydrophobic groups and capable of modifying the rheology properties of water-based and organic solvent-based compositions, comprising: (1) blending (a) for each from about 8 moles to about 14 moles of a polyalkylene oxide having a molecular weight of from about 2,000 to about 20,000, (b) from about 0.5 moles to about 5 moles of a polyfunctional material, (c) from about 9 moles to about 90 moles of a diisocyanate, and (d) from about 3 moles to about 70 moles water in an organic solvent; and (2) reacting the mixture of step (1) until substantially no free isocyanate groups are present, so as to form the rheology modifier.
Claim 16
Dependent Claim
124 words
A process for making a urethane rheology modifier characterized in having a branched structure, substantially no terminal hydrophobic groups and capable of modifying the rheology properties of water-based and organic solvent-based compositions, comprising: (1) blending (a) for each from about 8 moles to about 14 moles of a polyalkylene oxide having a molecular weight of from about 2,000 to about 20,000, (b) from about 0.5 moles to about 5 moles of a polyfunctional material, (c) from about 9 moles to about 90 moles of a diisocyanate, and (d) from about 3 moles to about 70 moles water in an organic solvent; and (2) reacting the mixture of step (1) until substantially no free isocyanate groups are present, so as to form the rheology modifier.
Claim 17
Dependent Claim
16 words
The process of claim 14 wherein the organic solvent is compatible with a water-based coating composition.
Claim 18
Dependent Claim
17 words
The process of claim 14 wherein the organic solvent is compatible with an organic solvent-based coating composition.
Claim 19
Dependent Claim
31 words
The process of claim 15 wherein the organic solvent is selected from the group consisting of 1-methyl-2-pyrolidinone, dimethylformamide, dimethyl acetamide, dimethyl sulfoxide, gamma butyrolactone, gamma butyrolactam, dioxane, acetonitrile and mixtures thereof.
Claim 20
Dependent Claim
11 words
The process of claim 17 wherein the organic solvent is 1-methyl-2-pyrrolidinone.
Claim 21
Dependent Claim
19 words
The process of claim 15 wherein a polyhydric material is added after substantially no free isocyanate groups are present.
Claim 22
Dependent Claim
24 words
The process of claim 19 wherein the polyhydric material is selected from the group consisting of ethylene glycol, propylene glycol, glycerine, and mixtures thereof.
Claim 23
Dependent Claim
12 words
The process of claim 20 wherein the polyhydric material is propylene glycol.
Claim 24
Dependent Claim
28 words
The process of claim 19 wherein the temperature of the mixture is maintained at from about 100° C. to about 130° C. while the polyhydric material is added.
Claim 25
Dependent Claim
25 words
The process of claim 14 wherein the mixture of step (1) is reacted at a temperature ranging from about 100° C. to about 130° C.
Claim 26
Dependent Claim
32 words
The process of claim 14 wherein the polyfunctional material has at least three active hydrogens and is capable of reacting with isocyanate or is a polyisocyanate having at least 3 isocyanate groups.
Claim 27
Dependent Claim
25 words
The process of claim 24 wherein the polyfunctional material is selected from the group consisting of polyols, amines, amine alcohols, thiols, polyisocyanates and mixtures thereof.
Claim 28
Dependent Claim
13 words
The process of claim 25 wherein the polyfunctional material is a trifunctional alcohol.
Claim 29
Dependent Claim
24 words
The process of claim 26 wherein the polyalkylene oxide is a polyethylene oxide having a molecular weight of from about 4,000 to about 12,000.
Claim 30
Dependent Claim
25 words
The process of claim 27 wherein the diisocyanate is selected from the group consisting of toluene diisocyanate, isophorone diisocyanate, bis para-isocyanato cyclohexylmethane and mixtures thereof.
Claim 31
Dependent Claim
65 words
The process of claim 28 wherein the mixture of step (1) comprises (a) for each from about 9 moles to about 12 moles of the polyalkylene oxide, (b) from about 1 mole to about 3 moles of the polyfunctional material, (c) from about 20 moles to about 35 moles of the diisocyanate and (d) from about 5 moles to about 38 moles of the water.
Claim 32
Dependent Claim
22 words
The process of claim 29 wherein the water is present at a level of from about 8 moles to about 25 moles.
Claim 33
Dependent Claim
16 words
The process of claim 30 wherein polyethylene oxide, trimethylolpropane, bis para-isocyanato cyclohexylmethane and water are reacted.
Claim 34
Dependent Claim
108 words
A coating composition consisting essentially of a film-forming polymeric resin and about 0.1% to about 10%, based on the film-forming polymeric resin solids, of a rheology modifier, said modifier characterized in having a branched structure, substantially no terminal hydrophobic groups, and derived from the reaction of (a) for each from about 8 moles to about 14 moles of a polyalkylene oxide having a molecular weight of from about 2,000 to about 20,000, (b) from about 0.5 moles to about 5 moles of a polyfunctional material; (c) from about 9 moles to about 90 moles of a diisocyanate and; (d) from about 3 moles to about 70 moles water.
Claim 35
Dependent Claim
108 words
A coating composition consisting essentially of a film-forming polymeric resin and about 0.1% to about 10%, based on the film-forming polymeric resin solids, of a rheology modifier, said modifier characterized in having a branched structure, substantially no terminal hydrophobic groups, and derived from the reaction of (a) for each from about 8 moles to about 14 moles of a polyalkylene oxide having a molecular weight of from about 2,000 to about 20,000, (b) from about 0.5 moles to about 5 moles of a polyfunctional material; (c) from about 9 moles to about 90 moles of a diisocyanate and; (d) from about 3 moles to about 70 moles water.
Claim 36
Dependent Claim
32 words
The composition of claim 32 wherein the polyfunctional material has at least 3 active hydrogens and is capable of reacting with isocyanate or is a polyisocyanate having at least 3 isocyanate groups.
Claim 37
Dependent Claim
23 words
The composition of claim 33 wherein the polyfunctional material is selected from the group consisting of polyols, amines, amine alcohols, thiols and polyisocyanates.
Claim 38
Dependent Claim
12 words
The composition of claim 34 wherein the polyfunctional material is a polyol.
Claim 39
Dependent Claim
12 words
The composition of claim 35 wherein the polyol is a trifunctional alcohol.
Claim 40
Dependent Claim
11 words
The composition of claim 36 wherein the trifunctional alcohol is trimethylolpropane.
Claim 41
Dependent Claim
25 words
The composition of claims 33 or 37 wherein the polyalkylene oxide is polyethylene oxide having a molecular weight of from about 4000 to about 12,000.
Claim 42
Dependent Claim
25 words
The composition of claim 38 wherein the diisocyanate is selected from the group consisting of toluene diisocyanate, isophorone diisocyanate, bis para-isocyanato cyclohexylmethane and mixtures thereof.
Claim 43
Dependent Claim
60 words
The composition of claim 32 wherein the rheology modifier is derived from (a) for each about 9 moles to about 12 moles of the polyalkylene oxide; (b) about 1 mole to about 3 moles of the polyfunctional material; (c) about 20 moles to about 35 moles of the diisocyanate and (d) from about 5 moles to about 38 moles water.
Claim 44
Dependent Claim
20 words
The composition of claim 40 wherein from about 8 moles to about 25 moles water is used in the reaction.
Claim 45
Dependent Claim
27 words
The composition of claim 32 wherein the film-forming resin is an epoxy, vinyl, alkyd, polyester, acrylic, aminoplast, phenolplast, cellulose derivative, amide or urethane resin or mixture thereof.
Claim 46
Dependent Claim
13 words
The composition of claim 32 wherein the film-forming resin is a latex resin.
Claim 47
Dependent Claim
20 words
The composition of claim 43 wherein the composition contains from about 5% to about 70% of the polymeric film-forming resin.
References Cited (Backward Citations)
US2929800A
Cited
US3326821A
Cited
US3483167A
Cited
US3857800A
Cited
US4118354A
Cited
US3939123A
Cited
US4061618A
Cited
US4155892A
Cited
US4134610A
Cited
US4180491A
Cited
US4131604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-02 | 1985-05-04 | 1985-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-02 | 1989-05-04 | 1989-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-02 | 1993-05-04 | 1993-11-03 | $7700.00 | Window Closed / Lapsed |