US4564648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy graft acrylic water-based primer surfaces
Assignee: EIDP Inc
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Filing: 1984-09-21
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Granted: 1986-01-14
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Expires: 2004-09-21
Abstract
Abstract Dispersion of an epoxy ester graft acrylic in water with a total of no more than 5% of organic volatiles and amines. These dispersions can be used in primer compositions for metal substrates having a minimum of organic solvent emissions and which can crosslink at temperatures from 110°-200° C., giving a good balance of hardness, flexibility, humidity, corrosion resistance and anti-chipping properties.
Inventors
- 👤 Jozef T. Huybrechts
- 👤 Victor R. Vleminckx
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:02
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4292; C08F; C08F283/00; C08F283/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
132 words
A dispersion in water of: (a) 10-60% of an epoxy ester graft acrylic polymer formed by reacting 5-30% of an epoxy ester polymer formed by reaction of n moles of a difunctional epoxy resin with terminal oxirane groups and a number average molecular weight (Mn) of 300-5,000, n-1 moles of a diacid, and 2 moles of a monofunctional acid to form a reaction product, onto which is grafted 5-30% of an acrylic monomer by using a peroxide or azo initiator, to produce said epoxy ester acrylic polymer with a Mn=1000-50,000 and an acid number of 30-150, (b) amines being added to an extent equivalent to neutralizing 50-200% of the moles of acid functionality, (c) organic solvents, such dispersion having not more than 10% volatile organic solvents plus amines, and (d) balance water.
Claim 2
Dependent Claim
132 words
A dispersion in water of: (a) 10-60% of an epoxy ester graft acrylic polymer formed by reacting 5-30% of an epoxy ester polymer formed by reaction of n moles of a difunctional epoxy resin with terminal oxirane groups and a number average molecular weight (Mn) of 300-5,000, n-1 moles of a diacid, and 2 moles of a monofunctional acid to form a reaction product, onto which is grafted 5-30% of an acrylic monomer by using a peroxide or azo initiator, to produce said epoxy ester acrylic polymer with a Mn=1000-50,000 and an acid number of 30-150, (b) amines being added to an extent equivalent to neutralizing 50-200% of the moles of acid functionality, (c) organic solvents, such dispersion having not more than 10% volatile organic solvents plus amines, and (d) balance water.
Claim 3
Dependent Claim
34 words
The dispersion of claim 1 with 5-20% epoxy ester and 10-30% of an acrylic with acid number 60-140 in 50-80% deionized water, having been azeotropically distilled to leave not more than 5% organic volatiles.
Claim 4
Dependent Claim
46 words
The dispersion of claim 1 with the epoxy ester formed by reaction of n moles of a difunctional bisphenol A-based epoxy with Mn=300-2000, n-1 moles an aliphatic-based difunctional acid with a total of 4-40 carbon atoms and 2 moles of monofunctional acid having 2-25 carbon atoms.
Claim 5
Dependent Claim
53 words
The dispersion of claim 1 with the acrylic graft formed by reaction of alkyl acrylate, alkyl methacrylate, styrene, hydroxyfunctional acrylates and/or methacrylates, acid functional acrylates and/or methacrylates, alkylmaleates and/or fumarates, using 0.01-10% by weight of initiator based on the acrylic content, at 60°180° C., with the acrylic having an acid number of 40-120.
Claim 6
Dependent Claim
25 words
The dispersion of claim 1 with the epoxy ester-graft acrylic having been neutralized with a tertiary amine which has a boiling point of 60°-220° C.
Claim 7
Dependent Claim
13 words
The dispersion of claim 1 containing 0-10% of a water soluble organic solvent.
Claim 8
Dependent Claim
31 words
The dispersion of claim 1 of which at least 5-15% is epoxy ester, 5-15% is acrylic graft, up to 5% is neutralizing amine plug organic solvent, and 60-80% is deionized water.
Claim 9
Dependent Claim
28 words
The dispersion of claim 1 with the epoxy ester and acrylic graft being formed in an aromatic solvent, neutralizing with the amine and the aromatic solvent distilling off.
Claim 10
Dependent Claim
54 words
The coating composition comprising (a) 10-40% of the expoxy ester graft acrylic polymer described in claim 1, including up to 5% neutralizing amines plus organic solvents, and 30-80% of deionized water, (b) 0-40% of pigments and extenders, (c) 0-20% of additives and/or reactive diluents, and (d) 0-30% of a water soluble or dispersable crosslinker.
Claim 11
Dependent Claim
35 words
The coating composition of claim 9 wherein the epoxy ester graft acrylic polymer has at least 5-15% epoxy ester, 5-15% acrylic graft, up to 5% is neutralizing amine plus organic solvent, and 60-80% deionized water.
Claim 12
Dependent Claim
25 words
The coating composition of claim 9 wherein the additives are water soluble or dispersible linear or branched polyethylene oxides or polypropylene oxides with a Mn=100-2500.
Claim 13
Dependent Claim
19 words
The coating composition of claim 9 wherein the water soluble or dispersible crosslinker is a methylated melamine formaldehyde resin.
Claim 14
Dependent Claim
15 words
An epoxy ester graft acrylic polymer made in accordance with paragraph (a) of claim 1.
Claim 15
Dependent Claim
18 words
A process of making an epoxy ester graft acrylic polymer in accordance with paragraph (a) of claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-13 | 1989-07-15 | 1990-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-13 | 1993-07-15 | 1994-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-13 | 1997-07-15 | 1998-01-14 | $7700.00 | Window Closed / Lapsed |