US3839256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicate-resin coating composition
Assignee: United States Steel Corp
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Filing: 1973-05-11
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Granted: 1974-10-01
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Expires: 1993-05-11
Abstract
Abstract A coating composition is disclosed comprising aqueous dispersions of copolymers, terpolymers, or ionomers of ethylene and ethylenically-unsaturated carboxylic acids or esters, blended with organic quaternary ammonium-silicate solutions. Coatings from these compositions are useful as electrical insulating coatings, particularly as applied to electrical steel sheets for magnetic cores, or to other metal sheets or wires, or as coatings or impregnants on other substrates. These organic/inorganic coatings have more heat resistance than purely organic coatings, and better adhesion, toughness, lubricity, and lack of abrasiveness than most inorganic coatings. When this coated steel is heated to hwgh temperatures for annealing, a tightly adhering coating of essentially inorganic silica is retained which has excellent electrical insulating properties.
Inventors
- 👤 R Parkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:50
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08K; C08K3/00; C08K3/34; C08K5/00; C08K5/16; C08K5/17; C09; C09D; C09D1/00; C09D1/02; C09D1/04; C09D123/00; C09D123/02; C09D123/04; C09D123/08; H01B3/02; H01B3/10; H01B3/105; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/16; H01F1/18
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
171 words
COMPOSITION USEFUL FOR COATING SUBSTRATES COMPRISING A SOLUTION OR DISPERSION IN AN AQUEOUS MEDIUM OF A. QUANTERNARY AMMONIUM SILICATE OF THE FORMULA WM2O.X(NNRP)2O.Y SIO8Z H2O WHERE W IS A NUMBER FROM 0 TO 1 X IS A NUMBER FROM 0.33 TO 1.5, Y IS A NUMBER FROM 2 TO 10, Z IS A NUMBER FROM 1 TO 20 M IS AN ALKALI METAL, R IS AN ORGANIC RADICAL THAT FORMS AN NR BASE SELECTED FROM ALKYL, ALKANOL, AND HETEROCYCLIC GROUPS, EACH INDEPENDENTLY SELECTED, HAVING FROM 1 TO 20 CARBON ATOMS, N IS AN INTEGER FROM 1 TO 10, AND P IS AT LEAST 4, AND B, ETHYLENE POLYMER SELECTED FROM THE GROUP CONSISTING OF COPOLYMERS, TERPOLYMERS AND IONOMERS OF ETHYLENE WITH ACRYLIC, METHACRYLIC OR CROTONIC ACIDS OR ESTERS THEREOF OR VINYL ACETATE, WHEREIN THE PORTION OF ETHYLENE POLYMER DERIVED FROM ETHYLENE IS FORM ABOUT 60 TO ABOUT 90 WEIGHT PERCENT, THE WEIGHT RATIO OF SIO2 DREIVED FROM THE QUATERNARY AMMONIUM SILICATE TO ETHYLENE POLYMER BEING FROM ABOUT 20:1 TO ABOUT 1:20.
Claim 2
Dependent Claim
171 words
COMPOSITION USEFUL FOR COATING SUBSTRATES COMPRISING A SOLUTION OR DISPERSION IN AN AQUEOUS MEDIUM OF A. QUANTERNARY AMMONIUM SILICATE OF THE FORMULA WM2O.X(NNRP)2O.Y SIO8Z H2O WHERE W IS A NUMBER FROM 0 TO 1 X IS A NUMBER FROM 0.33 TO 1.5, Y IS A NUMBER FROM 2 TO 10, Z IS A NUMBER FROM 1 TO 20 M IS AN ALKALI METAL, R IS AN ORGANIC RADICAL THAT FORMS AN NR BASE SELECTED FROM ALKYL, ALKANOL, AND HETEROCYCLIC GROUPS, EACH INDEPENDENTLY SELECTED, HAVING FROM 1 TO 20 CARBON ATOMS, N IS AN INTEGER FROM 1 TO 10, AND P IS AT LEAST 4, AND B, ETHYLENE POLYMER SELECTED FROM THE GROUP CONSISTING OF COPOLYMERS, TERPOLYMERS AND IONOMERS OF ETHYLENE WITH ACRYLIC, METHACRYLIC OR CROTONIC ACIDS OR ESTERS THEREOF OR VINYL ACETATE, WHEREIN THE PORTION OF ETHYLENE POLYMER DERIVED FROM ETHYLENE IS FORM ABOUT 60 TO ABOUT 90 WEIGHT PERCENT, THE WEIGHT RATIO OF SIO2 DREIVED FROM THE QUATERNARY AMMONIUM SILICATE TO ETHYLENE POLYMER BEING FROM ABOUT 20:1 TO ABOUT 1:20.
Claim 3
Dependent Claim
33 words
Composition of claim 1 in which the quaternary ammonium silicate is in the form of an aqueous solution and the ethylene polymer is in the form of an aqueous solution, dispersion or latex.
Claim 4
Dependent Claim
14 words
an ionomer of ethylene and metacrylic acid in the form of an aqueous dispersion.
Claim 5
Dependent Claim
14 words
an ionomer of ethylene and metacrylic acid in the form of an aqueous dispersion.
Claim 6
Dependent Claim
18 words
Composition of claim 1 in which the ethylene polymer is an ammonium, alkali metal or volatile alkali ionomer.
Claim 7
Dependent Claim
10 words
Composition of claim 1 in which (NnRp) is CH3 N(CH2CH2OH)3.
Claim 8
Dependent Claim
9 words
Composition of claim 1 in which (NnRp) is N(CH2CH2OH)4.
Claim 9
Dependent Claim
21 words
Composition of claim 1 in which the weight ratio of SiO2 to ethylene polymer is from about 1:1 to about 10:1.
Claim 10
Dependent Claim
28 words
Composition of claim 1 in which the ethylene polymer is a copolymer of ethylene and vinyl acetate and is in the form of an aqueous dispersion or latex.
Claim 11
Dependent Claim
31 words
A composition of claim 1 in which the ethylene polymer is a copolymer of ethylene and acrylic acid and is in the form of an aqueous ammonium salt solution or dispersion.
Claim 12
Dependent Claim
14 words
Composition of claim 1 in which the ethylene polymer component is a mixture of
Claim 13
Dependent Claim
22 words
Composition of claim 1 including soluble alkali-metal silicate in an amount up to about three times the amount of quaternary ammonium silicate.
Claim 14
Dependent Claim
147 words
Method of making a composition useful in forming coatings comprising forming a solution or dispersion of a quaternary ammonium silicate of the formula WM2O.X(NnRp)2O.Y SiO2.Z H2O where W is a number from 0 to 1, X is a number from 0.33 to 1.5, Y is a number from 2 to 10, Z is a number from 1 to 20, M is an alkali metal, R is an organic radical that forms an NR base selected from alkyl, alkanol, and heterocyclic groups, each independently selected, having from 1 to 20 carbon atoms, n is an integer from 1 to 10, and p is at least 4, in a previously formed solution or dispersion of a copolymer of ethylene and an ethylenically unsaturated carboxylic acid containing monomer wherein the ethylene portion comprises about 60 to 90 weight percent, said ethylene polymer being in a solution of a volatile alkali.
Claim 15
Dependent Claim
147 words
Method of making a composition useful in forming coatings comprising forming a solution or dispersion of a quaternary ammonium silicate of the formula WM2O.X(NnRp)2O.Y SiO2.Z H2O where W is a number from 0 to 1, X is a number from 0.33 to 1.5, Y is a number from 2 to 10, Z is a number from 1 to 20, M is an alkali metal, R is an organic radical that forms an NR base selected from alkyl, alkanol, and heterocyclic groups, each independently selected, having from 1 to 20 carbon atoms, n is an integer from 1 to 10, and p is at least 4, in a previously formed solution or dispersion of a copolymer of ethylene and an ethylenically unsaturated carboxylic acid containing monomer wherein the ethylene portion comprises about 60 to 90 weight percent, said ethylene polymer being in a solution of a volatile alkali.
Claim 16
Dependent Claim
12 words
Method of claim 11 in which the volatile alkali is ammonium hydroxide.
Claim 17
Dependent Claim
73 words
Method of making a compOsition useful for coating substrates comprising a. dissolving a copolymer of ethylene and acrylic acid in an aqueous solution of volatile alkali at a temperature from about 90*C to about 130*C, and b. mixing into the solution thus formed a quaternary ammonium silicate solution to yeild a composition with a weight ratio of SiO2 derived from the quaternary ammonium silicate to ethylene copolymer solids of from 1:20 to 20:1.
Claim 18
Dependent Claim
73 words
Method of making a compOsition useful for coating substrates comprising a. dissolving a copolymer of ethylene and acrylic acid in an aqueous solution of volatile alkali at a temperature from about 90*C to about 130*C, and b. mixing into the solution thus formed a quaternary ammonium silicate solution to yeild a composition with a weight ratio of SiO2 derived from the quaternary ammonium silicate to ethylene copolymer solids of from 1:20 to 20:1.
Claim 19
Dependent Claim
14 words
Method of claim 13 in which the solution of volatile alkali is aqueous ammonia.
Claim 20
Dependent Claim
24 words
Method of claim 13 in which the ethylene copolymer is a copolymer of ethylene and from about 10 percent to 30 percent acrylic acid.
Claim 21
Dependent Claim
15 words
Composition of claim 1 stabilized against gelling including an effective amount of a stabilizing amine.
Claim 22
Dependent Claim
47 words
Composition of claim 1 in which the ethylene polymer component is a mixture of a. a copolymer of ethylene and acrylic acid in the form of an aqueous ammonium salt solution; and b. a copolymer of ethylene and vinyl acetate in the form of an aqueous dispersion.
Claim 23
Dependent Claim
49 words
Composition of claim 1 in which the ethylene polymer component is a mixture of a. a copolymer of ethylene and acrylic acid in the form of an aqueous ammonium salt solution; and b. a terpolymer of ethylene, vinyl acetate and methacrylic acid in the form of an aqueous dispersion.
References Cited (Backward Citations)
US3239549A
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US3383386A
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US3248237A
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US3453122A
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US3549589A
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US3718510A
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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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |