Patent US3850772A successfully refreshed from Google Patents.
US3850772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of organopolysiloxane-containing coatings to provide improved gloss and weather resistance
Assignee: DeSoto Inc
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Filing: 1971-08-27
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Granted: 1974-11-26
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Expires: 1991-08-27
Abstract
Abstract Films of improved gloss and weather resistance are electrodeposited from an aqueous bath on the anode by passing a unidirectional electrical current through a bath having dispersed therein an aminoplast resin in admixture with a linear copolymer having an acid value of from 12-100 and an hydroxy value of at least 10 and having at least 1% of organopolysiloxane condensed therein. On baking, the organopolysiloxane content of the copolymer enhances the gloss and exterior durability of the electrodeposited film.
Inventors
- 👤 K Sekmakas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:06
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4407; C08; C08F; C08F8/00; C08F8/42; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
25 words
A method as recited in claim 1 in which said copolymer comprises a major weight proportion of copolymerized C1 - C4 ester of acrylic acid.
Claim 2
Dependent Claim
27 words
A method as recited in claim 1 in which said copolymer having organopolysiloxane condensed therein contains from 2 up to about 30% by weight of said organopolysiloxane.
Claim 3
Dependent Claim
44 words
A method as recited in claim 1 in which said copolymer contains from 3 to 30% of the hydroxyl supplying component, based on the weight of the copolymer, calculated on the amount of hydroxy functional unsaturated monomer which would provide the same hydroxyl content.
Claim 4
Dependent Claim
35 words
A method as recited in claim 4 in which said hydroxy functionality is provided by reaction of monoepoxide with carboxyl groups in a copolymer formed by copolymerization of monomers including a monoethylenically unsaturated carboxylic acid.
Claim 5
Dependent Claim
17 words
A method as recited in claim 4 in which said hydroxy value is up to about 200.
Claim 6
Dependent Claim
26 words
A method as recited in claim 1 in which said organopolysiloxane is condensed to eliminate from 10 to 90% of the water or alcohol of reaction.
Claim 7
Dependent Claim
51 words
A method as recited in claim 1 in which said copolymer contains from 3 to 50% by weight, based on the weight of the copolymer, of copolymerized ethylenically unsaturated carboxylic acid providing carboxyl functionality in the copolymer, a portion of said carboxyl functionality being reacted with a stoichiometric deficiency of monoepoxide.
Claim 8
Dependent Claim
52 words
A method as recited in claim 8 in which said carboxylic acid is incorporated in said copolymer in an amount of from 5 to 30% by weight, and said monoepoxide is selected from the group consisting of ethylene oxide, propylene oxide, butylene oxide, glycidyl esters of tertiary monocarboxylic acids, and mixtures thereof.
Claim 9
Dependent Claim
30 words
A method as recited in claim 1 in which said water miscible organic solvent is present in an amount of at least 20 parts per 100 parts of said resin.
Claim 10
Dependent Claim
18 words
A method as recited in claim 1 in which said aminoplast is a heat-hardening water insoluble benzoguanamineformaldehyde condensate.
Claim 11
Dependent Claim
14 words
A method as recited in claim 1 in which said organopolysiloxane has the formula:
Claim 12
Dependent Claim
14 words
A method as recited in claim 12 in which said organopolysiloxane is methoxy functional.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |