US5137972A
Expired / Lapsed
US
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Environmental etch resistant, two-component, coating composition, method of coating therewith, and coating obtained therefrom
Assignee: BASF Corp
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Filing: 1991-08-29
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Granted: 1992-08-11
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Expires: 2011-08-29
Abstract
Abstract A two component composition suitable for coating a substrate comprises at least one crosslinker having a functionality thereon which is reactive with a functionality on at least one film forming polymer present in a separate component of the composition. The crosslinker comprises at least one member selected from the group consisting of: (1) an isocyanurate of isophorone diisocyanate; (2) a derivative of an isocyanurate of isophorone diisocyanate; (3) a biuret of isophorone diisocyanate; and (4) a derivative of a biuret of isophorone diisocyanate. The composition preferably comprises a blend of the this crosslinker with a second crosslinker, wherein the second crosslinker is at least one member selected from the group consisting of: (1) an isocyanurate of hexamethylene diisocyanate; (2) a derivative of an isocyanurate of hexamethylene diisocyanate; (3) a biuret of hexamethylene diisocyanate; and (4) a derivative of a biuret of hexamethylene diisocyanate. The invention also pertains to a process for coating a substrate using the composition, as well as to a cured coating formed by the process of the present invention.
Inventors
- 👤 Vincent C. Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:57
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/79; C08G18/791; C08G18/792; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/622; C08G18/6225; C08G18/6229; C08G18/7806; C08G18/7818; C08G18/7831; C09; C09D; C09D175/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31547; Y10T428/31551
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
68 words
A two-component composition suitable for coating a substrate, the composition comprising: A. a crosslinker comprising at least one member selected from the group consisting of: i. an isocyanurate of isophorone diisocyanate, ii. a derivative of an isocyanurate of isophorone diisocyanate, iii. a biuret of isophorone diisocyanate, iv. a derivative of a biuret of isophorone diisocyanate; and B. a film forming polymer comprising at least one reactive polymer functionality.
Claim 2
Dependent Claim
68 words
A two-component composition suitable for coating a substrate, the composition comprising: A. a crosslinker comprising at least one member selected from the group consisting of: i. an isocyanurate of isophorone diisocyanate, ii. a derivative of an isocyanurate of isophorone diisocyanate, iii. a biuret of isophorone diisocyanate, iv. a derivative of a biuret of isophorone diisocyanate; and B. a film forming polymer comprising at least one reactive polymer functionality.
Claim 3
Dependent Claim
143 words
A composition as described in claim 1 wherein the composition comprises a blend of at least a first crosslinker and a second crosslinker, wherein the first crosslinker comprises at least one member selected from the group consisting of: i. an isocyanurate of isophorone diisocyanate, ii. a derivative of an isocyanurate of isophorone diisocyanate, iii. a biuret of isophorone diisocyanate, iv. a derivative of a biuret of isophorone diisocyanate; wherein the second crosslinker comprises at least one member selected from the group consisting of: i. an isocyanurate of hexamethylene diisocyanate, ii a derivative of an isocyanurate of hexamethylene diisocyanate, iii. a biuret of hexamethylene diisocyanate, iv. a derivative of a biuret of hexamethylene diisocyanate; wherein the first crosslinker is blended with the second crosslinker in a ratio of equivalents of first crosslinker to equivalents of second crosslinker of from about 99:1 to about 1:99.
Claim 4
Dependent Claim
28 words
A composition as described in claim 2 wherein the first crosslinker is blended with the second crosslinker in an equivalents ratio of from about 90:10 to about 40:60.
Claim 5
Dependent Claim
24 words
A composition as described in claim 2 wherein the first crosslinker is blended with the second crosslinker in an equivalents ratio of about 85:15.
Claim 6
Dependent Claim
42 words
A composition as described in claim 2 wherein the film forming polymer comprises a polymer having thereon at least one reactive polymer functionality selected from the group consisting of a hydroxyl functionality, an amine functionality, an epoxy functionality, and an anhydride functionality.
Claim 7
Dependent Claim
16 words
A composition as described in claim 2 wherein the reactive polymer functionality comprises a hydroxyl functionality.
Claim 8
Dependent Claim
33 words
A composition as described in claim 2 wherein the film forming polymer comprises at least one member selected from the group consisting of an acrylic polymer, a polyurethane, a polyester, and a polyamide.
Claim 9
Dependent Claim
16 words
A composition as described in claim 2 wherein the film forming polymer comprises an acrylic polymer.
Claim 10
Dependent Claim
24 words
A composition as described in claim 2 wherein the polymer has a glass transition temperature of from about 15° C. to about 65° C.
Claim 11
Dependent Claim
24 words
A composition as described in claim 2 wherein the polymer has a glass transition temperature of from about 20° C. to about 60° C.
Claim 12
Dependent Claim
19 words
A composition as described in claim 2 wherein the polymer has a glass transition temperature of about 35° C.
Claim 13
Dependent Claim
37 words
A composition as described in claim 2 wherein the polymer has an equivalent weight, based on the r®active polymer functionality present in the polymer, of from about 480 grams per equivalent to about 240 grams per equivalent.
Claim 14
Dependent Claim
37 words
A composition as described in claim 2 wherein the polymer has an equivalent weight, based on the reactive polymer functionality present in the polymer, of from about 410 grams per equivalent to about 250 grams per equivalent.
Claim 15
Dependent Claim
30 words
A composition as described in claim 2 wherein the polymer has an equivalent weight, based on the reactive polymer functionality present in the polymer, of about 260 grams per equivalent.
Claim 16
Dependent Claim
41 words
A composition as described in claim 2 wherein the composition comprises the polymer and the blend of crosslinkers in an equivalents ratio, based on a ratio of reactive crosslinkers functionality to reactive polymer functionality, of from about 1.6:1 to about 0.4:1.
Claim 17
Dependent Claim
37 words
A composition as described in claim 2 wherein the composition comprises the polymer and the blend of crosslinkers in an equivalents ratio, based on a ratio of reactive crosslinkers functionality to reactive polymer functionality, of about 1:1.
Claim 18
Dependent Claim
149 words
A composition as described in claim 2 wherein the film forming polymer comprises at least one member selected from the group consisting of an acrylic polymer, a urethane polymer, a polyester polymer, and a polyamide polymer, and wherein the polymer comprises at least one polymer functionality selected from the group consisting of hydroxyl, amine, epoxy, and anhydride, and wherein the film forming polymer has a glass transition temperature of from about 15° C. to about 65° C., and wherein the film forming polymer has an equivalent weight, based on reactive polymer functionality, of from about 480 grams per equivalent to about 240 grams per equivalent, and wherein the composition comprises the film forming polymer and the blend of crosslinkers in an equivalents ratio, based on a ratio of reactive crosslinker functionality to reactive polymer functionality, of from about 1.6:1 to about 0.4:1, and wherein the composition is substantially transparent.
Claim 19
Dependent Claim
16 words
A process for coating a substrate, the process comprising: A. making a two component composition comprising:
Claim 20
Dependent Claim
16 words
A process for coating a substrate, the process comprising: A. making a two component composition comprising:
Claim 21
Dependent Claim
112 words
a crosslinker comprising at least one member selected from the group consisting of: i. an isocyanurate of isophorone diisocyanate, ii. a derivative of an isocyanurate of isophorone diisocyanate, iii. a biuret of isophorone diisocyanate, iv. a derivative of a biuret of isophorone diisocyanate; and 2. a film forming polymer comprising at least one reactive polymer functionality thereon; B. applying the two component composition to the substrate so that a film of the two component composition is formed on the substrate; and C. curing the film of the two component composition on the substrate, whereby a cured coating is produced by a reaction of the reactive polymer functionality with a reactive crosslinker functionality.
Claim 22
Dependent Claim
112 words
a crosslinker comprising at least one member selected from the group consisting of: i. an isocyanurate of isophorone diisocyanate, ii. a derivative of an isocyanurate of isophorone diisocyanate, iii. a biuret of isophorone diisocyanate, iv. a derivative of a biuret of isophorone diisocyanate; and 2. a film forming polymer comprising at least one reactive polymer functionality thereon; B. applying the two component composition to the substrate so that a film of the two component composition is formed on the substrate; and C. curing the film of the two component composition on the substrate, whereby a cured coating is produced by a reaction of the reactive polymer functionality with a reactive crosslinker functionality.
Claim 23
Dependent Claim
130 words
A process as described in claim 18, wherein the two component composition comprises a blend of at least a first crosslinker and a second crosslinker, wherein the first crosslinker comprises at least one member selected from the group consisting of: A. an isocyanurate of isophorone diisocyanate, B. a derivative of an isocyanurate of isophorone diisocyanate, C. a biuret of an isocyanurate of isophorone diisocyanate, D. a derivative of a biuret of an isocyanurate of isophorone diisocyanate; wherein the second crosslinker comprises at least one member selected from the group consisting of: A. an isocyanurate of hexamethylene diisocyanate, B. a derivative of an isocyanurate of hexamethylene diisocyanate, C. a biuret of hexamethylene diisocyanate, D. a derivative of a biuret of hexamethylene diisocyanate; and wherein the composition is a substantially transparent composition.
Claim 24
Dependent Claim
137 words
A process as described in claim 19, wherein the film forming polymer comprises at least one polymer selected from the group consisting of an acrylic polymer, a urethane polymer, a polyester polymer, and a polyamide polymer, and wherein the film forming polymer comprises at least one functionality selected from the group consisting of hydroxyl, amine, epoxy, and anhydride, and wherein the film forming polymer has a glass transition temperature of from about 15° C. to about 65° C., and wherein the film forming polymer has an equivalent weight, based upon reactive polymer functionality, of from about 480 grams per equivalent to about 240 grams per equivalent, and wherein the composition comprises the polymer and the blend of crosslinkers in an equivalents ratio of reactive polymer functionality to reactive crosslinkers functionality, of from about 1.6:1 to about 0.4:1.
Claim 25
Dependent Claim
115 words
A cured coating on a substrate, wherein the cured coating comprises a crosslinked polymeric network, wherein the crosslinked polymer network comprises at least one polymeric residue selected from the group consisting of: a residue of an acrylic polymer, a residue of a polyurethane, a residue of a polyester, and a residue of a polyamide, and wherein the crosslinked polymer network further comprises at least one crosslinker residue selected from the group consisting of: i. a residue of an isocyanurate of isophorone diisocyanate, ii. a residue of a derivative of an isocyanurate of isophorone diisocyanate, iii. a residue of a biuret of isophorone diisocyanate, iv. a residue of a derivative of a biuret of isophorone diisocyanate.
Claim 26
Dependent Claim
115 words
A cured coating on a substrate, wherein the cured coating comprises a crosslinked polymeric network, wherein the crosslinked polymer network comprises at least one polymeric residue selected from the group consisting of: a residue of an acrylic polymer, a residue of a polyurethane, a residue of a polyester, and a residue of a polyamide, and wherein the crosslinked polymer network further comprises at least one crosslinker residue selected from the group consisting of: i. a residue of an isocyanurate of isophorone diisocyanate, ii. a residue of a derivative of an isocyanurate of isophorone diisocyanate, iii. a residue of a biuret of isophorone diisocyanate, iv. a residue of a derivative of a biuret of isophorone diisocyanate.
Claim 27
Dependent Claim
183 words
A cured coating on a substrate as described in claim 21, wherein the cured coating comprises at least one first crosslinker residue and at least one second crosslinker residue, wherein the first crosslinker residue comprises at least one crosslinker residue selected from the group consisting of: i. a residue of an isocyanurate of isophorone diisocyanate, ii. a residue of a derivative of an isocyanurate of isophorone diisocyanate, iii. a residue of a biuret of isophorone diisocyanate, iv. a residue of a derivative of a biuret of isophorone diisocyanate; and wherein the second crosslinker residue comprises at least one member selected from the group consisting of: i. a residue of an isocyanurate of hexamethylene diisocyanate, ii. a residue of a derivative of an isocyanurate of hexamethylene diisocyanate, iii. a residue of a biuret of hexamethylene diisocyanate, iv. a residue of a biuret of hexamethylene diisocyanate; and wherein the first crosslinker is present in combination with the second crosslinker in an equivalents ratio, based on equivalents of first reactive crosslinker functionality and equivalents of second reactive crosslinker functionality, of from about 99:1 to about 1:99.
Claim 28
Dependent Claim
97 words
A cured coating as described in claim 22, wherein the polymeric residue comprises at least one member selected from the group consisting of a residue of an acrylic polymer and a residue of a polyurethane, and wherein the first crosslinker residue comprises a residue of an isocyanurate of isophorone diisocyanate, and wherein the second crosslinker comprises a residue of an isocyanurate of hexamethylene diisocyanate, and wherein an equivalents ratio of the residue of the first crosslinker to the second crosslinker is from about 90:10 to about 40:60, and wherein the cured coating is a substantially transparent coating.
References Cited (Backward Citations)
US4288586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-11 | 1996-02-10 | 1996-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-11 | 2000-02-10 | 2000-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-11 | 2004-02-10 | 2004-08-11 | $7700.00 | Window Closed / Lapsed |