US4695618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solventless polyurethane spray compositions and method for applying them
Assignee: Ameron International Corp
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Filing: 1986-05-23
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Granted: 1987-09-22
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Expires: 2006-05-23
Abstract
Abstract A method for preparing polyurethane by spraying solventless, equal volume mixtures of: (a) a liquid polyisocyanate; polyisocyanurate or isocyanate terminated quasi-prepolymer; and (b) a curing agent comprised of a blend of from about 0 to 15% of a polyamine having an equivalent weight from about 30 to about 200, about 10 to 20% of a low molecular weight glycol having an equivalent weight of from about 30 to 200, about 40 to 80% of a relatively high molecular weight polyol or polyamine having an equivalent weight of about 350 to 2000, and about 1 to 20% of a synthetic zeolite molecular sieve, wherein the average equivalent weight of (b) is from about 150 to 500.
Inventors
- 👤 Norman R. Mowrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:43
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/6505; C08G18/6511; C08G18/08; C08G18/088; C08G18/0885; C08G18/0895; C08G18/6523; C09; C09D; C09D175/00; C09D175/04; C08G2150/00; C08G2150/50
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
152 words
A two-component solventless spray composition for producing polyurethane and poly(urea)urethane coatings comprised of substantially equal volumes of: an isocyanate-containing component comprised of a liquid polyisocyanate, polyisocyanurate or isocyanate-terminated prepolymer or quasi-prepolymer; and a curative component comprised of from about 0% to about 15% by weight of one or more polyamines or alkanolamines in an amount sufficient to react to form a thixotropic mixture about 15 seconds to about 2 minutes after being mixed with the isocyanate-containing component, from about 10% to about 20% by weight of one or more glycols having an equivalent weight in the range from about 30 to about 200, from about 40% to about 80% by weight of one or more high molecular weight polyols or polyamines having an equivalent weight in the range from about 300 to about 2000, and at least about 1% by weight of one or more additives to adsorb moisture or carbon dioxide.
Claim 2
Dependent Claim
152 words
A two-component solventless spray composition for producing polyurethane and poly(urea)urethane coatings comprised of substantially equal volumes of: an isocyanate-containing component comprised of a liquid polyisocyanate, polyisocyanurate or isocyanate-terminated prepolymer or quasi-prepolymer; and a curative component comprised of from about 0% to about 15% by weight of one or more polyamines or alkanolamines in an amount sufficient to react to form a thixotropic mixture about 15 seconds to about 2 minutes after being mixed with the isocyanate-containing component, from about 10% to about 20% by weight of one or more glycols having an equivalent weight in the range from about 30 to about 200, from about 40% to about 80% by weight of one or more high molecular weight polyols or polyamines having an equivalent weight in the range from about 300 to about 2000, and at least about 1% by weight of one or more additives to adsorb moisture or carbon dioxide.
Claim 3
Dependent Claim
26 words
A composition as set forth in claim 1 wherein the polyamines or alkanolamines have an equivalent weight in the range from about 30 to about 200.
Claim 4
Dependent Claim
32 words
A composition as set forth in claim 1 wherein the curative component is also comprised of one or more catalysts to promote the hydroxyl-isocyanate reaction in formation of a polyurethane or poly(urea)urethane.
Claim 5
Dependent Claim
30 words
A composition as set forth in claim 1 wherein the additives to adsorb moisture are selected from the group consisting of calcium sulfate, calcium oxide or synthetic zeolite molecular sieves.
Claim 6
Dependent Claim
39 words
A composition as set forth in claim 3 wherein the catalysts are selected from the group consisting of dibutyltin dilaurate, stannous octoate, lead octoate, phenylmercuric propionate, ferric acetylacetonate, organo-tin carboxylates, organo-bismuth compounds or organo-zinc compounds such as zinc octoate.
Claim 7
Dependent Claim
29 words
A composition as set forth in either of claims 1 or 3 wherein the components when blended have an average equivalent weight of from about 150 to about 500.
Claim 8
Dependent Claim
30 words
A composition as set forth in either of claims 1 or 2 wherein the components have an isocyanate to active hydrogen equivalent ratio of from about 0.85 to about 1.15.
Claim 9
Dependent Claim
21 words
A composition as set forth in claim 1 wherein each component has a viscosity less than 1000 centipoise at 70° F.
Claim 10
Dependent Claim
30 words
A composition as set forth in claim 1 wherein the one or more polyamines or alkanolamines make up from about 2% to about 7% by weight of the curative component.
Claim 11
Dependent Claim
19 words
A composition as set forth in claim 1 wherein the one or more polyamines or alkanolamines are diethyl toluenediaamine.
Claim 12
Dependent Claim
30 words
A composition as set forth in claim 1 wherein the isocyanate-containing component is based on aliphatic isocyanate and the polyamine or alkanolamine is a very reactive aliphatic or cyloaliphatic polyamine.
Claim 13
Dependent Claim
26 words
A composition as set forth in claim 1 wherein the isocyanate-containing component is based on aromatic diisocyanate and the polyamine or alkanolamine is an aromatic diamine.
Claim 14
Dependent Claim
34 words
A composition as set forth in claim 1 wherein the one or more additives to adsorb moisture or carbon dioxide make up from about 1% to about 20% by weight of the curative component.
Claim 15
Dependent Claim
152 words
A two-component solventless spray composition for producing polyurethane and poly(urea)urethane coatings comprised of: an isocyanate-containing component comprised of a liquid polyisocyanate, polyisocyanurate or isocyanate-terminated prepolymer or quasi-prepolymer; and a curative component comprised of from about 0% to about 15% by weight of one or more polyamines or alkanolamines in an amount sufficient to form a coating which is substantially tack-free within about 5 minutes to about 60 minutes after being mixed with the isocyanate-containing component, from about 10% to about 20% by weight of one or more glycols having an equivalent weight in the range from about 30 to about 200, from about 40% to about 80% be weight of one or more high molecular weight polyols or polyamines having an equivalent weight in the range from about 300 to about 2000, and from about 1% to about 20% by weight of one or more additives to adsorb moisture or carbon dioxide.
Claim 16
Dependent Claim
152 words
A two-component solventless spray composition for producing polyurethane and poly(urea)urethane coatings comprised of: an isocyanate-containing component comprised of a liquid polyisocyanate, polyisocyanurate or isocyanate-terminated prepolymer or quasi-prepolymer; and a curative component comprised of from about 0% to about 15% by weight of one or more polyamines or alkanolamines in an amount sufficient to form a coating which is substantially tack-free within about 5 minutes to about 60 minutes after being mixed with the isocyanate-containing component, from about 10% to about 20% by weight of one or more glycols having an equivalent weight in the range from about 30 to about 200, from about 40% to about 80% be weight of one or more high molecular weight polyols or polyamines having an equivalent weight in the range from about 300 to about 2000, and from about 1% to about 20% by weight of one or more additives to adsorb moisture or carbon dioxide.
Claim 17
Dependent Claim
138 words
A two-component solventless spray composition for producing polyurethane and poly(urea)urethane coatings comprised of: an isocyanate-containing component comprised of a liquid polyisocyanate, polyisocyanurate or isocyanate-terminated prepolymer or quasi-prepolymer; and a curative component comprised of from about 2% to about 7% by weight of one or more polyamines or alkanolamines having an equivalent weight in the range from about 30 to about 200, from about 10% to about 20% by weight of one or more glycols having an equivalent weight in the range from about 30 to about 200, from about 40% to about 80% by weight of one or more high molecular weight polyols or polyamines having an equivalent weight in the range from about 300 to about 2000, and from about 1% to about 20% by weight of one or more additives to adsorb moisture or carbon dioxide.
Claim 18
Dependent Claim
138 words
A two-component solventless spray composition for producing polyurethane and poly(urea)urethane coatings comprised of: an isocyanate-containing component comprised of a liquid polyisocyanate, polyisocyanurate or isocyanate-terminated prepolymer or quasi-prepolymer; and a curative component comprised of from about 2% to about 7% by weight of one or more polyamines or alkanolamines having an equivalent weight in the range from about 30 to about 200, from about 10% to about 20% by weight of one or more glycols having an equivalent weight in the range from about 30 to about 200, from about 40% to about 80% by weight of one or more high molecular weight polyols or polyamines having an equivalent weight in the range from about 300 to about 2000, and from about 1% to about 20% by weight of one or more additives to adsorb moisture or carbon dioxide.
Claim 19
Independent Claim
179 words
A method for the solventless spray application of a polyurethane or poly(urea)urethane coating, comprising the steps of: delivering to a manifold an isocyanate-containing component comprised of a liquid polyisocyanate, polyisocyanurate or isocyanate-terminated prepolymer or quasi-prepolymer; delivering to said manifold a curative component comprised of from about 0% to about 15% by weight of one or more polyamines or alkanolamines having an equivalent weight in the range from about 30 to about 200, from about 10% to about 20% by weight of one or more glycols having an equivalent weight in the range from about 30 to about 200, from about 40% to about 80% by weight of one or more high molecular weight polyols or polyamines having an equivalent weight in the range from about 300 to about 2000, and from about 1% to about 20% by weight of one or more additives to adsorb moisture or carbon dioxide; mixing the isocyanate-containing component and the curative component with each other; and spraying the resulting mixture through an atomizing nozzle onto a surface to produce a polyurethane or poly(urea)urethane coating.
Claim 20
Independent Claim
179 words
A method for the solventless spray application of a polyurethane or poly(urea)urethane coating, comprising the steps of: delivering to a manifold an isocyanate-containing component comprised of a liquid polyisocyanate, polyisocyanurate or isocyanate-terminated prepolymer or quasi-prepolymer; delivering to said manifold a curative component comprised of from about 0% to about 15% by weight of one or more polyamines or alkanolamines having an equivalent weight in the range from about 30 to about 200, from about 10% to about 20% by weight of one or more glycols having an equivalent weight in the range from about 30 to about 200, from about 40% to about 80% by weight of one or more high molecular weight polyols or polyamines having an equivalent weight in the range from about 300 to about 2000, and from about 1% to about 20% by weight of one or more additives to adsorb moisture or carbon dioxide; mixing the isocyanate-containing component and the curative component with each other; and spraying the resulting mixture through an atomizing nozzle onto a surface to produce a polyurethane or poly(urea)urethane coating.
Claim 21
Dependent Claim
27 words
A method as set fourth in claim 16 wherein the isocyanate-containing component and the curative component are delivered to the manifold in a volumetric ratio of 1:1.
Claim 22
Dependent Claim
28 words
A method as set forth in claim 16 wherein the average equivalent weight of the resulting mixture is in the range of from about 150 to about 500.
Claim 23
Dependent Claim
26 words
A method as set forth in claim 16 wherein the isocyanate-containing component and the curative component each have viscosities less than 1000 centipoise at ambient temperatures.
Claim 24
Dependent Claim
34 words
A method as set forth in claim 16 wherein the one or more additives to adsorb moisture or carbon dioxide make up from about 2% to about 8% by weight of the curative component.
Claim 25
Dependent Claim
16 words
The product of any of the methods set forth in any one of claims 16-20 inclusive.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-09-21 | 1991-03-23 | 1991-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-21 | 1995-03-23 | 1995-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-21 | 1999-03-23 | 1999-09-22 | $7700.00 | Window Closed / Lapsed |