US3894976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pseudoplastic water base paint containing a novel heteropolysaccharide
Assignee: Kelco Co
•
Filing: 1973-11-30
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Granted: 1975-07-15
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Expires: 1993-11-30
Abstract
Abstract A dripless, water base paint containing a latex or rubber-like binder, a pigment, an aqueous vehicle for the pigment and binder, and a small quantity of Heteropolysaccharide-7, a novel heteropolysaccharide, in an amount sufficient to give the paint pseudoplastic properties. The paint may contain a small quantity of a water-soluble alginate in addition to the novel heteropolysaccharide. Process for forming a dripless, water base paint containing a latex or rubber-like binder, a pigment, and an aqueous vehicle for the binder and pigment. The process may include the formation of a pigment grind of the pigment in water prior to the addition of the latex binder, which comprises adding a small quantity of the novel heteropolysaccharide to the pigment grind and thereafter grinding the pigment which reduces the time required to obtain optimum dispersion of the pigment.
Inventors
- 👤 Kenneth Suk Kang
- 👤 William H Mcneely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:13
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/04; C09D7/00; C09D7/40; C09D7/47; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/831
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
40 words
A WATER BASE PAINT COMPRISING A LATEX RUBBER-LIKE WATER BASE PAINT BINDER, A PIGMENT, AN AQUEOUS VEHICLE FOR SAID BINDER AND PIGMENT, AND CONTAINING A SMALL QUANTITY OF HETEROPOLYSACCHARIDE-7 IN AN EFFECTIVE AMOUNT SUFFICIENT TO GIVE SAID PAINT PSEUDOPLASTIC PROPRTIES.
Claim 2
Dependent Claim
40 words
A WATER BASE PAINT COMPRISING A LATEX RUBBER-LIKE WATER BASE PAINT BINDER, A PIGMENT, AN AQUEOUS VEHICLE FOR SAID BINDER AND PIGMENT, AND CONTAINING A SMALL QUANTITY OF HETEROPOLYSACCHARIDE-7 IN AN EFFECTIVE AMOUNT SUFFICIENT TO GIVE SAID PAINT PSEUDOPLASTIC PROPRTIES.
Claim 3
Dependent Claim
31 words
The water base paint of claim 1 wherein said Heteropolysaccharide-7 is present in an amount ranging from about 0.01 to about 8% by weight of the total weight of said paint.
Claim 4
Dependent Claim
31 words
The water base paint of claim 1 wherein said Heteropolysaccharide-7 is present in an amount ranging from about 0.2 to about 0.7% by weight of the total weight of said paint.
Claim 5
Dependent Claim
14 words
The water base paint of claim 1 wherein said binder is a synthetic latex.
Claim 6
Dependent Claim
15 words
The water base paint of claim 4 wherein said binder is a polyvinyl acetate emulsion.
Claim 7
Dependent Claim
14 words
The water base paint of claim 4 wherein said binder is an acrylic emulsion.
Claim 8
Dependent Claim
14 words
The water base paint of claim 4 wherein said binder is a styrene-butadiene emulsion.
Claim 9
Dependent Claim
33 words
The water base paint of claim 1 including a water-soluble alginate, wherein the weight ratio of said Heteropolysaccharide-7 to said water-soluble alginate ranges from about 3 to 1 to about 1 to 3.
Claim 10
Dependent Claim
30 words
The water base paint of claim 8 wherein said water soluble alginate has a viscosity of about 50 to about 1,800 centipoises in a 1% aqueous solution in deioninzed water.
Claim 11
Dependent Claim
14 words
The water base paint of claim 9 wherein said water-soluble alginate is sodium alginate.
Claim 12
Dependent Claim
31 words
The water base paint of claim 9 wherein said Heteropolysaccharide-7 is present in an amount ranging from about 0.01 to about 8% by weight of the total weight of said paint.
Claim 13
Dependent Claim
14 words
The water base paint of claim 9 wherein said binder is a synthetic latex.
Claim 14
Dependent Claim
15 words
The water base paint of claim 12 wherein said binder is a polyvinyl acetate emulsion.
Claim 15
Dependent Claim
14 words
The water base paint of claim 12 wherein said binder is an acrylic emulsion.
Claim 16
Dependent Claim
14 words
The water base paint of claim 12 wherein said binder is a styrene-butadiene emulsion.
Claim 17
Dependent Claim
77 words
In a process for forming a water base paint comprising a latex rubber-like water base paint binder, a pigment, and an aqueous vehicle for said binder and pigment and including forming a pigment grind of said pigment and water prior to addition of said latex binder, the improvement comprising adding a small quantity of Heteropolysaccharide-7 to said pigment grind and thereafter grinding said pigment, whereby the time required to obtain optimum dispersion of the pigment is reduced.
Claim 18
Dependent Claim
77 words
In a process for forming a water base paint comprising a latex rubber-like water base paint binder, a pigment, and an aqueous vehicle for said binder and pigment and including forming a pigment grind of said pigment and water prior to addition of said latex binder, the improvement comprising adding a small quantity of Heteropolysaccharide-7 to said pigment grind and thereafter grinding said pigment, whereby the time required to obtain optimum dispersion of the pigment is reduced.
Claim 19
Dependent Claim
29 words
The process of claim 16 wherein the quantity of said Heteropolysaccharide-7 added to said pigment grind ranges up to about 12 pounds per 100 gallons of said pigment grind.
Claim 20
Dependent Claim
19 words
The process of claim 17 including the step of adding to said pigment grind a finely divided water-soluble alginate.
Claim 21
Dependent Claim
29 words
The process of claim 18 wherein said finely divided water-soluble alginate has a viscosity in a 1% aqueous solution from about 50 to about 1,800 centipoises in deionized water.
Claim 22
Dependent Claim
33 words
The process fo claim 18 wheren said water-soluble alginate is a high viscosity sodium alginate, having a viscosity in a 1% aqueous deionized water solution ranging from about 800 to about 1,000 centipoises.
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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) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |