Patent EP0744304A2 successfully refreshed from Google Patents.
Patent US2628052A successfully refreshed from Google Patents.
Patent US5090809A successfully refreshed from Google Patents.
Patent US4307153A successfully refreshed from Google Patents.
US4307153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linkable, saturated polyester coating compositions
Assignee: Chloe Chimie SA
•
Filing: 1979-07-30
•
Granted: 1981-12-22
•
Expires: 1999-07-30
Abstract
Abstract Curable, saturated polyester resins and epoxy resin cross-linking agents therefor, in association with an at least divalent metal oxide and a cross-linking catalyst, are useful binders for mechanically improved powder paints, e.g., those typically applied to metallic substrates by electrostatic deposition or fluidized bed spraying.
Inventors
- 👤 Daniel Bernelin
- 👤 Jacques Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:58
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C09; C09D; C09D167/00; Y; Y10; Y10S; Y10S524/00; Y10S524/901; Y10S524/902; Y10S524/904; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31786
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
53 words
A powdery composition of matter comprising (i) a cross-linkable, carboxylated, saturated polyester resin; (ii) an epoxy resin cross-linking agent for the polyester (i), (iii) a metallic oxide, the metal cation of which is selected from the group consisting of zinc, magnesium, cadmium, iron (II) and alkaline earth; and (iv) an epoxy ring-opening catalyst.
Claim 2
Dependent Claim
53 words
A powdery composition of matter comprising (i) a cross-linkable, carboxylated, saturated polyester resin; (ii) an epoxy resin cross-linking agent for the polyester (i), (iii) a metallic oxide, the metal cation of which is selected from the group consisting of zinc, magnesium, cadmium, iron (II) and alkaline earth; and (iv) an epoxy ring-opening catalyst.
Claim 3
Dependent Claim
45 words
The composition of matter as defined by claim 1, wherein the polyester resin (i) is a solid, having a softening point between about 50° C. and 130° C., having an acid number between 20 and 100 and having a hydroxyl number of less than 20.
Claim 4
Dependent Claim
38 words
The composition of matter as defined by claim 2, wherein the amount of metal oxide present is between about 0.1% and 5% by weight, with respect to the total weight of the polyester resin and the epoxy resin.
Claim 5
Dependent Claim
20 words
The composition of matter as defined by claim 3, wherein the catalyst (iv) is an at least divalent organometallic salt.
Claim 6
Dependent Claim
37 words
The composition of matter as defined by claim 4, wherein the amount of catalyst present is between about 0.1% and 5% by weight, with respect to the total weight of the polyester resin and the epoxy resin.
Claim 7
Dependent Claim
28 words
The composition of matter as defined by claim 4, further including a member selected from the group consisting of filler, pigment, colorant, flow control agent, and mixtures thereof.
Claim 8
Dependent Claim
39 words
The composition of matter as defined by claim 2, wherein the epoxy resin (ii) is a solid, having a softening point between about 50° C. and 120° C., and having an epoxy number of between about 400 and 1500.
Claim 9
Dependent Claim
22 words
The composition of matter as defined by claim 7, said epoxy resin being the condensation product of a diphenol and an epihalohydrin.
Claim 10
Dependent Claim
29 words
The composition of matter as defined by claim 5, wherein the polyester resin comprises the reaction product of an aromatic dicarboxylic acid, or ester-forming derivative thereof, and a diol.
Claim 11
Dependent Claim
26 words
The composition of matter as defined by claim 9, wherein the aromatic dicarboxylic acid is selected from the group consisting of terephthalic acid and isophthalic acid.
Claim 12
Dependent Claim
32 words
The composition of matter as defined by claim 10, wherein the diol is selected from the group consisting of ethylene glycol, polyalkylene glycol, butanediol, bis-hydroxyethyl-bisphenol A, neopentyl glycol and hydrogenated bisphenol A.
Claim 13
Dependent Claim
48 words
The composition of matter as defined by claim 11, further including a member selected from the group consisting of an aromatic polycarboxylic acid having in excess of two carboxylic acid functions, an aliphatic polycarboxylic acid having in excess of two carboxylic acid functions, and the ester-forming derivatives thereof.
Claim 14
Dependent Claim
37 words
The composition of matter as defined by claim 12, wherein such polycarboxylic acids are selected from the group consisting of trimellitic acid and anhydride thereof, pyromellitic acid and anhydride thereof, and butane tetracarboxylic acid and anhydride thereof.
Claim 15
Dependent Claim
16 words
The composition of matter as defined by claim 11, further comprising a saturated aliphatic dicarboxylic acid.
Claim 16
Dependent Claim
29 words
The composition of matter as defined by claim 14, wherein the saturated, aliphatic dicarboxylic acid is selected from the group consisting of adipic acid, succinic acid and sebacic acid.
Claim 17
Dependent Claim
15 words
The composition of matter as defined by claim 11, further comprising an at least triol.
Claim 18
Dependent Claim
26 words
The composition of matter as defined by claim 16, wherein said at least triol is selected from the group consisting of glycerol, trimethylolpropane, trihydroxyethylisocyanurate and pentaerythritol.
Claim 19
Dependent Claim
16 words
The composition of matter as defined by claim 3, wherein the metal oxide is finely powdered.
Claim 20
Dependent Claim
25 words
The composition of matter as defined by claim 18, wherein the metal oxide is finely powdered to a particle size of less than 10 microns.
Claim 21
Dependent Claim
22 words
The composition of matter as defined by claim 3, the amount of metal oxide ranging between about 0.5% and 3% by weight.
Claim 22
Dependent Claim
47 words
The composition of matter as defined by claim 1, wherein the weight ratio of polyester to cross-linking agent is such that the total number of reactive carboxylic functions in the polyester is substantially stoichiometrically equal to the total number of reactive epoxy functions in the cross-linking agent.
Claim 23
Dependent Claim
16 words
The composition of matter as defined by claim 1, wherein said metal oxide is zinc oxide.
Claim 24
Dependent Claim
47 words
A process for the formulation of the compositions of matter as defined by claim 1, comprising physically admixing the four components in dry state, next homogenizing and fusing the resulting admixture at a temperature less than 120° C., and thence cooling and grinding the product of fusion.
Claim 25
Dependent Claim
37 words
The process as defined by claim 23, wherein the fusion is at a temperature of less than 100° C., the product is ground to particle seizes of between 20 to 100 microns, and the ground product screened.
Claim 26
Dependent Claim
13 words
A coating composition comprising the composition of matter as defined by claim 1.
Claim 27
Dependent Claim
12 words
The coating as defined by claim 25 which comprises a powder paint.
Claim 28
Dependent Claim
18 words
A cross-linked polymeric matrix, comprising the autoreaction product of the composition of matter as defined by claim 1.
Claim 29
Dependent Claim
15 words
A coated substrate, the coating comprising the cross-linked polymeric matrix as defined by claim 27.
Claim 30
Dependent Claim
13 words
The coated substrate as defined by claim 28, the coating comprising a paint.
Claim 31
Dependent Claim
23 words
The coated substrate as defined by claim 29, the substrate coated being selected from the group consisting of a metal and a ceramic.
Claim 32
Dependent Claim
46 words
A process for preparing a coated substrate comprising applying to a substrate, in powder form, the composition of matter as defined by claim 1, and thence heat curing the same for from 5 to 40 minutes at a temperature of from 150° C. to 200° C.
Claim 33
Dependent Claim
14 words
The process as defined by claim 31, wherein the application is by electrostatic deposition.
Claim 34
Dependent Claim
15 words
The process as defined by claim 32, wherein the application is by fluidized bed spraying.
Claim 35
Dependent Claim
20 words
The composition of matter as defined by claim 2, said polyester resin having a hydroxyl number of less than 10.
Claim 36
Dependent Claim
20 words
The composition of matter as defined by claim 8, said epoxy resin being the condensation product of 2,2-(4-hydroxyphenyl)propane and epichlorohydrin.
Claim 37
Dependent Claim
21 words
The composition of matter as defined by claim 5, the amount of catalyst ranging between about 0.5% and 3% by weight.
Claim 38
Dependent Claim
24 words
The composition of matter as defined by claim 4, said organometallic salt comprising a cation selected from the group consisting of magnesium and zinc.
Claim 39
Dependent Claim
23 words
The composition of matter as defined by claim 37, said organometallic salt comprising an organic moiety having from 2 to 20 carbon atoms.
Claim 40
Dependent Claim
15 words
A composition of matter as defined by claim 38, said organometallic salt being an acetylacetonate.
References Cited (Backward Citations)
US3080255A
Cited
US3576903A
Cited
US4147737A
Cited
US3786004A
Cited
US4076767A
Cited
US4268579A
Cited
USRE29555E
Cited
US4087479A
Cited
US4223097A
Cited
US4182840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |