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US4048192A
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Water-dilutable tetrapolymers of vinyl acetate, maleic diesters, crotonic acid and hydrophilic unsaturated copolymerizable esters
Assignee: Wacker Chemie AG
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Filing: 1975-10-30
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Granted: 1977-09-13
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Expires: 1995-10-30
Abstract
Abstract A vinyl acetate copolymerizate of monomers being a free-radical polymerized copolymerizate having monomer units consisting essentially of A. from 60% to 80% by weight of vinyl acetate units, B. from 10% to 20% by weight of units of a maleic acid diester with a straight-chained alkanol-1 having from about 8 to 10 carbon atoms, C. from 5% to 20% by weight of units of a mono-olefinically unsaturated ester having from 6 to 8 carbon atoms and a hydrophilic group, and D. from 3% to 10%, particularly 7%, by weight of crotonic acid; as well as an alcoholic solution thereof and salts thereof.
Inventors
- 👤 Alois Stoll
- 👤 Eduard Bergmeister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:32
CPC Classifications
C; C08; C08F; C08F218/00; C08F218/02; C08F218/04; C08F218/08; Y; Y10; Y10S; Y10S526/00; Y10S526/93
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
121 words
A vinyl acetate copolymerizate of monomers being a free-radical polymerized copolymerizate having monomer units consisting essentially of a. from 60% to 80% by weight of vinyl acetate units, b. from 10% to 20% by weight of units of a maleic acid diester with straight-chained primary alcohols selected from the group consisting of n-octanol-1, n-decanol-1 and mixtures thereof, c. from 5% to 20% by weight of units of a mono-olefinically unsaturated ester copolymerizable with vinyl acetate and having from 6 to 8 carbon atoms and a hydrophilic group selected from the group consisting of carboxyl groups, hydroxyl groups and keto groups, and d. from 3% to 10% by weight of crotonic acid units; and the copolymers thereof neutralized by salt forming compounds.
Claim 2
Dependent Claim
121 words
A vinyl acetate copolymerizate of monomers being a free-radical polymerized copolymerizate having monomer units consisting essentially of a. from 60% to 80% by weight of vinyl acetate units, b. from 10% to 20% by weight of units of a maleic acid diester with straight-chained primary alcohols selected from the group consisting of n-octanol-1, n-decanol-1 and mixtures thereof, c. from 5% to 20% by weight of units of a mono-olefinically unsaturated ester copolymerizable with vinyl acetate and having from 6 to 8 carbon atoms and a hydrophilic group selected from the group consisting of carboxyl groups, hydroxyl groups and keto groups, and d. from 3% to 10% by weight of crotonic acid units; and the copolymers thereof neutralized by salt forming compounds.
Claim 3
Dependent Claim
24 words
The vinyl acetate copolymerizate of claim 1 wherein units of component (d) are present in an amount of from 3% to 7% by weight.
Claim 4
Dependent Claim
33 words
The vinyl acetate copolymerizate of claim 1 wherein said maleic acid diester of component (b) is a diester of alcohols produced industrially be polymerization of ethylene on aluminum with subsequent oxidation and hydrolysis.
Claim 5
Dependent Claim
41 words
The vinyl acetate copolymerizate of claim 1 wherein said mono-olefinically unsaturated ester copolymerizable with vinyl acetate and having from 6 to 8 carbon atoms of component (c) is selected from the group consisting of monoalkyl maleates, hydroxyalkyl acrylates and hydroxyalkyl methacrylates.
Claim 6
Dependent Claim
45 words
The vinyl acetate copolymerizate of claim 1 wherein said salt forming compounds are selected from the group consisting of alkali metal hydroxide, ammonia, and amines having from 2 to 8 carbon atoms selected from the group consisting of alkylamines, alkylolamines, alkylenediamines, dialkylenetriamines, alkylaminoalkanols and aminoalkyleneglycols.
Claim 7
Dependent Claim
56 words
A process for the production of the vinyl acetate copolymerizate of claim 1 which consists essentially of heating the monomers in bulk in the presence of an oil-soluble peroxide and a molecular weight regulator at a temperature of from 30° to 140° C for a time sufficient to effect copolymerization and recovering said vinyl acetate copolymerizate.
Claim 8
Dependent Claim
28 words
The process of claim 6 wherein said oilsoluble peroxide is a dialkyl peroxydicarbonate employed in amounts of from 0.01% to 1% based on the weight of the monomers.
Claim 9
Dependent Claim
15 words
A solution of the vinyl acetate copolymerizate of claim 1 in a water-miscible organic solvent.
Claim 10
Dependent Claim
15 words
The solution of claim 8 wherein said watermiscible organic solvent is a water-miscible lower alkanol.
Claim 11
Dependent Claim
18 words
The vinyl acetate copolymerizate of claim 1 having a K-value of the range of from 20 to 70.
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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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |