Patent US5225519A successfully refreshed from Google Patents.
US5225519A
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Quick-hardening coating composition
Assignee: INDUSTRIE VERNICI ITALIANE SpA A CORP OF ITALY
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Filing: 1990-05-22
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Granted: 1993-07-06
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Expires: 2010-05-22
Abstract
Abstract Described is a coating composition comprising at least a polycarbodiimide component having at least two carbodiimide groups per molecule, at least one anhyride component having one or more carboxylic acid anhydride groups per molecule, and a hydroxylic reagent capable of reacting with said anhydride component to generate free carboxylic polyacids, at least one among said components and reagents being a compound suitable for forming films. The composition produces fast cross-linking coatings at low temperatures.
Inventors
- 👤 Antonio Tortolina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:02
CPC Classifications
C; C08; C08L; C08L73/00; C08L73/02; C08G; C08G67/00; C08G67/04; C09; C09D; C09D173/00; C09D173/02
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
103 words
Coating compositions comprising at least one polycarbodiimide component having at least two carbodiimide groups per molecule, at least one anhydride component having at least one carboxylic acid anhydride group per molecule, and a hydroxylic reagent capable of reacting with said anhydride component to generate free carboxylic polyacids, wherein said polycarbodiimide component is present as a compound by itself or at least part of said polycarbodiimide component has been prereacted through at least part of its carbodiimide groups with said anhydride component so as to form a complex compound, at least one among said components and reagents being a compound suitable for forming films.
Claim 2
Dependent Claim
103 words
Coating compositions comprising at least one polycarbodiimide component having at least two carbodiimide groups per molecule, at least one anhydride component having at least one carboxylic acid anhydride group per molecule, and a hydroxylic reagent capable of reacting with said anhydride component to generate free carboxylic polyacids, wherein said polycarbodiimide component is present as a compound by itself or at least part of said polycarbodiimide component has been prereacted through at least part of its carbodiimide groups with said anhydride component so as to form a complex compound, at least one among said components and reagents being a compound suitable for forming films.
Claim 3
Dependent Claim
82 words
Composition according to claim 1 wherein said polycarbodiimide component is selected from among compounds of the following general formula (1): Z.sub.1 --N═C═N--Z.sub.2 --N═C═N . . . Z.sub.n( 1) in which Z 1 , Z 2 , . . . are linear or branched aliphatic hydrocarbon radicals or aromatic radicals, having at least two carbodiimide groups per molecule said radicals Z 1 , Z 2 , . . . Z n being radicals without functional groups capable of reacting with the carbodiimide groups.
Claim 4
Dependent Claim
111 words
Composition according to claim 1 wherein said anhydride component is selected from among linear polymeric anhydrides of the formula ##STR6## in which X a and X b are selected from among atoms of hydrogen, linear or branched aliphatic hydrocarbon radicals, or aromatic hydrocarbon radicals, derived from monofunctional carboxylic acids, R 1 , R 2 , . . . R n are selected from among linear or branched aliphatic, cycloaliphatic, heterocyclic, and aromatic hydrocarbon radicals, possibly having substituents nonreactive with the anhydride group, said radicals being derived from polyfunctional carboxylic acids, and n 1 , n 2 , . . . n are whole numbers that each vary from 0 to 30.
Claim 5
Dependent Claim
34 words
Composition according to claim 1 wherein said anhydride component is a monofunctional cyclic anhydride selected from among succinic anhydride, maleic anhydride, glutaric anhydride, phthalic anhydride, hexahydrophthalic anhydride, tetrapropenylsuccinic anhydride, tetrahydrophthalic anhydride or methylhexahydrophthalic anhydride.
Claim 6
Dependent Claim
26 words
Composition according to claim 1 wherein said anhydride component is a cyclic polyanhydride selected from among polymers having at least two cyclic anhydride groups per molecule.
Claim 7
Dependent Claim
29 words
Composition according to claim 5 wherein said cyclic polyanhydride comprises a polycarbodiimide polymer carrying on the main polymeric chain said at least two substituents constituted by cyclic anhydride groups.
Claim 8
Dependent Claim
104 words
Composition according to claim 6 wherein said cyclic polyanhydride is the product of reaction of a polymeric polycarbodiimide of formula (1) Z.sub.1 --N═C═N--Z.sub.2 --N═C═N . . . Z.sub.n( 1) in which Z 1 , Z 2 , . . . Z n are linear or branched aliphatic hydrocarbon radicals or aromatic radicals, having at lest two carbodiimide groups per molecule, said radicals Z 1 , Z 2 , . . . Z n being radicals without functional groups capable of reacting with the carbodiimide groups, with compounds derived from polycarboxylic acid having cyclic anhydride groups and at least a free carboxylic group per molecule.
Claim 9
Dependent Claim
28 words
Composition according to claim 7 wherein said cyclic anhydride is selected from among trimellitic anhydride or the products of reaction of maleic anhydride with olefinically unsaturated carboxylic acids.
Claim 10
Dependent Claim
100 words
Composition according to claim 6 wherein said cyclic polyanhydride is the product of reaction between a polycarbodiimide of formula (1) Z.sub.1 --N═C═N--Z.sub.2 --N═C═N . . . Z.sub.n( 1) in which Z 1 , Z 2 , . . . Z n are linear or branched aliphatic hydrocarbon radicals or aromatic radicals, having at least two carbodiimide groups per molecule, said radicals Z 1 , Z 2 , . . . Z n being radicals without functional groups capable of reacting with the carbodiimide groups pre-reacted with unsaturated carboxylic acids and an unsaturated cyclic anhydride derived from unsaturated polyfunctional carboxylic acids.
Claim 11
Dependent Claim
25 words
Composition according to claim 9 wherein said cyclic polyanhydride is the product of said polycarbodiimide with olefinically or dienically unsatured carboxylic acids and their anhydrides.
Claim 12
Dependent Claim
17 words
Composition according to claim 5 wherein said cyclic polyanhydride is a polymer derived from olefinically unsaturated monomers.
Claim 13
Dependent Claim
23 words
Composition according to claim 11 wherein said olefinically unsaturated monomer containing the cyclic anhydride group is selected from maleic anhydride or itaconic anhydride.
Claim 14
Dependent Claim
28 words
Coating composition according to claim 1 comprising said polycarbodiimide component and said anhydride component incorporated in a single compound constituted by a cyclic polyanhydride according to claim 6.
Claim 15
Dependent Claim
30 words
Composition according to claim 1 wherein said hydroxylic reagent capable of reacting with said anhydride component is selected from among mono-hydroxylic and poly-hydroxylic, monomeric, oligomeric or polymeric compounds, or water.
Claim 16
Dependent Claim
34 words
Composition according to claim 1 wherein the ratios between the carbodiimide and anhydride functionalities range of from 2/1 to 1/2 and the ratios between the hydroxylic and anhydride functionalities range between 1/1 and 3/1.
Claim 17
Dependent Claim
18 words
Composition according to claim 1 comprising a basic catalyst selected from among tertiary amines or quaternary ammonium salts.
Claim 18
Dependent Claim
30 words
Coating method consisting of applying to a substrate a composition according to claim 1 and of heating the substrate thus coated at a temperature of about 15° to 80° C.
Claim 19
Dependent Claim
13 words
Manufactured article bearing a coating obtained with the composition according to claim 1.
Claim 20
Dependent Claim
106 words
Coating composition according to claim 13, wherein said cyclic polyanhydride is the product of reaction of a polymeric polycarbodiimide of formula (1) Z.sub.1 --N═C═N--Z.sub.2 --N═C═N . . . Z.sub.n( 1) in which Z 1 , Z 2 , . . . Z n are linear or branched aliphatic hydrocarbon radicals or aromatic radicals, having at least two carbodiimide groups per molecule, said radicals Z 1 , Z 2 , . . . Z n being radicals without functional groups capable of reacting with the carbodiimide groups, with a compounds derived from polycarboxylic acid having cyclic anhyride groups and at least a free carboxylic group per molecule.
Claim 21
Dependent Claim
100 words
Coating composition according to claim 13 wherein said cyclic polyanhydride is the product of reaction of a polycarbodiimide of formula (1) Z.sub.1 --N═C═N--Z.sub.2 --N═C═N . . . Z.sub.n( 1) in which Z 1 , Z 2 , . . . Z n are linear or branched aliphatic hydrocarbon radicals or aromatic radicals, having at least two carbodiimie groups per molecule, said radicals Z 1 , Z 2 , . . . Z n being radicals without functional groups capable of reacting with the carbodiimide groups, with unsatured carboxylic acids and an unsatured cyclic anhydride derived from unsatured polyfunctional carboxylic acids.
References Cited (Backward Citations)
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