US3883458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flatting agents for coatings
Assignee: BASF SE
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Filing: 1974-02-01
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Granted: 1975-05-13
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Expires: 1994-02-01
Abstract
Abstract Flatting agents for coatings obtained by reacting a polyolefin wax (A) with a vinyl aromatic compound (B) and a copolymerizable Alpha , Beta -olefinically unsaturated dicarboxylic anhydride (C), optionally partially replaced by at least one Alpha , Beta -olefinically unsaturated monocaraboxylic acid, the molar ratio of (B) to (C) being from 0.7:1 to 1:0.7 and the sum of the weights of (B) and (C) being from 2 to 50 percent by weight of the weight of polyolefin wax (A). The reaction is carried out at temperatures of from 100* to 200*C, in the presence or absence of conventional free-radical polymerization initiators. The agents are particularly suitable for coatings containing organic solvents.
Inventors
- 👤 Dietrich-Wolfgang Mueller
- 👤 Hans Klug
- 👤 Klaus Bronstert
- 👤 Lieselore Grah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:14
CPC Classifications
C; C09; C09D; C09D7/00; C09D7/40; C09D7/42
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
121 words
A SURFACE COATING CONTAINING AS A FLATTING AGENT THE PRODUCT OBTAINED BY REACTING A. A POLYOLEFIN WAX HAVING A MOLECULAR WEIGHT OF 800 TO 25,000 WHICH IS A POLYETHYLENE WAX, A POLYPROPYLENE WAX OR AN ETHYLENE/PROPYLENE COPOLYMER WAX, WITH B. A VINYL AROMATIC COMPOUND WHICH IS STYRENE OR VINYL TOLUENE AND C. A COPOLYMERIZABLE A,B-OLEFINICALLY UNSATURATED DICARBOXYLIC ANHYDRIDE OF FROM 4 TO 5 CARBON ATOMS, AT A MOLAR RATIO OF (B):(C) OF FROM 0.7:1 TO 1:0.7 AND A WEIGHT TOTAL OF (B) PLUS (C) OF FROM 2 TO 50 PERCENT BY WEIGHT WITH REFERENCE TO THE WEIGHT OF THE POLYOLEFIN WAS (A) AND AT A TEMPERATURE OF FROM 100*C. TO 200*C. IN THE PRESENCE OR ABSENCE OF A FREE-RADICAL POLYMERIZATION INITIATOR.
Claim 2
Dependent Claim
121 words
A SURFACE COATING CONTAINING AS A FLATTING AGENT THE PRODUCT OBTAINED BY REACTING A. A POLYOLEFIN WAX HAVING A MOLECULAR WEIGHT OF 800 TO 25,000 WHICH IS A POLYETHYLENE WAX, A POLYPROPYLENE WAX OR AN ETHYLENE/PROPYLENE COPOLYMER WAX, WITH B. A VINYL AROMATIC COMPOUND WHICH IS STYRENE OR VINYL TOLUENE AND C. A COPOLYMERIZABLE A,B-OLEFINICALLY UNSATURATED DICARBOXYLIC ANHYDRIDE OF FROM 4 TO 5 CARBON ATOMS, AT A MOLAR RATIO OF (B):(C) OF FROM 0.7:1 TO 1:0.7 AND A WEIGHT TOTAL OF (B) PLUS (C) OF FROM 2 TO 50 PERCENT BY WEIGHT WITH REFERENCE TO THE WEIGHT OF THE POLYOLEFIN WAS (A) AND AT A TEMPERATURE OF FROM 100*C. TO 200*C. IN THE PRESENCE OR ABSENCE OF A FREE-RADICAL POLYMERIZATION INITIATOR.
Claim 3
Dependent Claim
53 words
A surface coating containing said flatting agent as claimed in claim 1, wherein the copolymerizable Alpha , Beta -olefinically unsaturated dicarboxylic anhydride (C) is replaced to an extent of up to 35 percent molar by at least one Alpha , Beta -olefinically unsaturated copolymerizable monocarboxylic acid of from 3 to 5 carbon atoms.
Claim 4
Dependent Claim
18 words
A surface coating containing said flatting agent as claimed in claim 1, wherein component (C) is maleic anhydride.
Claim 5
Dependent Claim
32 words
A surface coating containing said flatting agent as claimed in claim 1, wherein component (C) is replaced to an extent of up to 35 percent molar by acrylic acid or methacrylic acid.
Claim 6
Dependent Claim
25 words
A surface coating containing said flatting agent as claimed in claim 1, wherein the molar ratio of (B) to (C) is from 0.9:1 to 1:0.8.
Claim 7
Dependent Claim
25 words
A surface coating containing said flatting agent as claimed in claim 1 wherein the flatting agent is distributed in the coating as a fine powder.
Claim 8
Dependent Claim
26 words
A surface coating containing said flatting agent as claimed in claim 1 wherein said surface coating is based upon an organic solvent, water or mixtures thereof.
Claim 9
Dependent Claim
48 words
A surface coating containing said flatting agent as claimed in claim 7 wherein the coating contains as a binder a polymeric material selected from the group consisting of amino resins, alkyd resins, polyurethanes, polyethere polyols, vinyl chloride copolymers, acrylate copolymers, methacrylate copolymers, nitrocellulose and mixtures of said binders.
Claim 10
Dependent Claim
23 words
A surface coating containing said flatting agent as claimed in claim 8 wherein component (A) has a molecular weight of 2,000 to 20,000.
Claim 11
Dependent Claim
53 words
A surface coating containing said flatting agent as claimed in claim 9 wherein component (B) is styrene and component (C) is maleic anhydride of which 35 percent molar is replaceable with acrylic acid and/or methacrylic acid, the total of (B) and (C) being from 6 to 35 percent by weight of component (A).
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |