EP0249200A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
High solids sag resistant cycloaliphatic epoxy coatings
Assignee: Union Carbide Corp
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Filing: 1987-06-10
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Granted: —
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Expires: 2007-06-10
Abstract
Abstract Sprayable, thermosetting, sag-resistant coating composition comprising at least 50 weight percent nonvolatiles comprising: (a) 100 weight parts of a crosslinkable cycloaliphatic epoxy containing at least one cycloaliphatic ring, (b) 0 to 300 weight parts of a crosslinking/chain-extending agent compatible with and capable of crosslinking and/or chain-extending said epoxy, and (c) a sag control system comprising, (1) 2 to 15 weight parts of an acrylic microgel, and (2) 5 to 35 weight parts of an organic polymer having a glass transition temperature of at least 25°C. Sag control compositions for controlling sag in cycloaliphatic epoxy coatings comprising: (a) an acrylic microgel, and (b) an organic polymer having a glass transition temperature of at least 25°C., in a weight ratio of said microgel to said polymer in the range from 1:4 to 4:1.
Inventors
- 👤 Steven J. Kubisen
- 👤 Enrico G. Mazzariello
- 👤 Robert F. Eaton
- 👤 Glenn S. Peacock
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 11:41
CPC Classifications
C; C09; C09D; C09D163/00; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/24
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
70 words
A thermosetting, tag-resistant coating composition comprising at least 50 wt. % nonvolatiles comprising: (a) a crosslinkable cycloaliphatic epoxy containing at least one cycloaliphatic ring, (b) a crosslinking/chain-extending agent compatible with and capable of crosslinking and/or chain-extending said epoxy, (c) a sag control system comprising: (1) an acrylic microgel, and (2) an organic polymer having a glass transition temperature of at least 25°C, and (d) a catalyst in an effective amount.
Claim 2
Dependent Claim
70 words
A thermosetting, tag-resistant coating composition comprising at least 50 wt. % nonvolatiles comprising: (a) a crosslinkable cycloaliphatic epoxy containing at least one cycloaliphatic ring, (b) a crosslinking/chain-extending agent compatible with and capable of crosslinking and/or chain-extending said epoxy, (c) a sag control system comprising: (1) an acrylic microgel, and (2) an organic polymer having a glass transition temperature of at least 25°C, and (d) a catalyst in an effective amount.
Claim 3
Dependent Claim
83 words
The composition of claim 1 comprising: (a) 100 weight parts of the cycloaliphatic epoxy containing at least one cycloaliphatic ring, (b) 0 to 300 weight parts of the crosslinking/chain-extending agent compatible with and capable of crosslinking and/or chain-extending said epoxy,.and (c) the sag control system comprising, (1) 2 to 15 weight parts of an acrylic microgel, (2) 5 to 35 weight parts of an organic polymer having a glass transition temperature of at least 25°C and (d) the catalyst in an effective amount.
Claim 4
Dependent Claim
13 words
Composition as claimed in claim 1 or 2 wherein the epoxy is 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexylcarboxylate.
Claim 5
Dependent Claim
13 words
Composition as claimed in claim 2 wherein the crosslinking agent is a polyol.
Claim 6
Dependent Claim
15 words
Composition as claimed in claim 4 wherein the crosslinking agent is also a flexibilizing agent.
Claim 7
Dependent Claim
34 words
Composition as claimed in claim 4 or 5 wherein the polyol is a polycaprolactone polyol having an average molecular weight of from 290 to 6,000 and an average hydroxyl number of 15 to 600.
Claim 8
Dependent Claim
25 words
Composition as claimed in claim 6 wherein the polycaprolactone has an average molecular weight of about 900 and an average hydroxyl number of about 187.
Claim 9
Dependent Claim
44 words
8 . Composition as claimed in claims 1 to 7 wherein the organic polymer is an alkanoic acid ester or mixed ester of cellulose , a phenoxy resin or a vinyl polymer, preferably a terpolymer of vinyl chloride, vinyl acetate, and a hydroxy-containing monomer.
Claim 10
Dependent Claim
36 words
9 . Composition as claimed in claims 1 to 8 wherein the acrylic microgel comprises highly crosslinked acrylic polymer particles each having an average diameter of 0.05 to 0.2 µm blended with an acrylic solution polymer.
Claim 11
Dependent Claim
16 words
10 . Composition as claimed in claims 1 to 9 further comprising a Lewis acid catalyst.
Claim 12
Dependent Claim
20 words
11 . Composition as claimed in claims 1 to 10 wherein the catalyst is an onium salt catalyst, preferably diethylammoniumtriflate.
Claim 13
Dependent Claim
13 words
Composition as claimed in claims 1 to 11 further comprising a silicone surfactant.
Claim 14
Dependent Claim
56 words
13 . Composition as claimed in claim 2 comprising at least 50 weight percent nonvolatiles comprising: (a) 100 weight parts of the crosslinkable' cycloaliphatic epoxy, (b) 25 to 40 weight parts of the crosslinking/chain-extending agent, (c) 5 to 10 weight parts of the acrylic microgel, and (d) 7 to 30 weight parts of the organic polymer.
Claim 15
Dependent Claim
57 words
A sag control mixture for controlling sag in cycloaliphatic epoxy coatings comprising.: (a) an acrylic microgel, and (b) an organic polymer having a glass transition temperature of at least 25°C, according to claims 1 to 13 in a weight ratio of the microgel to the polymer in the range from 1:4 to 4:1, preferably 1:1 to 1:3.
References Cited (Backward Citations)
No citation records indexed.
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