US4544693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble film
Assignee: Monsanto Co
•
Filing: 1984-01-03
•
Granted: 1985-10-01
•
Expires: 2004-01-03
Abstract
Abstract The present invention is directed to water-soluble film comprising: -Component % By Weight -Polyvinyl Alcohol 40-75 -Polyvinyl Pyrrolidone 7.5-43 - Ethoxylated Alkyphenol 7-20 -Polyhydric Alcohol 7-20 - The cold water-soluble packaging films formed from the compositions of this invention are useful for packaging of agricultural chemicals which are in granule or dust form. By containing such water dispersable granule or dust agricultural chemicals in water-soluble bag films of this invention, one is able to avoid the problem of dust which may be irritating and/or toxic to the user. Specific examples of agricultural chemicals which are usually packaged in pre-measured portions in the water-soluble films of the present invention are insecticides, herbicides, nematocides, fungicides, plant growth regulants and herbicidal antidotes. The water-soluble films of the present invention may also be useful in containing such items as laundry detergents, bleaches and caustic products; other uses would involve the containment of activated charcoal, pigments, dyes, foodstuffs and food additives.
Inventors
- 👤 John M. Surgant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:12
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; B; B65; B65D; B65D65/00; B65D65/38; B65D65/46; C08L; C08L29/00; C08L29/02; C08L29/04; C08J2329/00; C08J2329/02; C08J2329/04; C08L39/00; C08L39/04; C08L39/06
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
32 words
A composition useful for forming water-soluble film comprising: ______________________________________
Component % By Weight
______________________________________
a. Polyvinyl alcohol
40.0-75.0
b. Polyvinyl pyrrolidone
7.5-43.0
c. Ethoxylated alkyphenol
7.0-20.0
surfactant
d. Polyhydric alcohol
7.0-20.0
______________________________________
Claim 2
Dependent Claim
32 words
A composition useful for forming water-soluble film comprising: ______________________________________
Component % By Weight
______________________________________
a. Polyvinyl alcohol
40.0-75.0
b. Polyvinyl pyrrolidone
7.5-43.0
c. Ethoxylated alkyphenol
7.0-20.0
surfactant
d. Polyhydric alcohol
7.0-20.0
______________________________________
Claim 3
Dependent Claim
36 words
A composition according to claim 1 wherein said polyvinyl alcohol is an hydrolyzed polyvinyl acetate having about 75-99 mole percent of the acetate groups replaced by hydroxyl groups and having about 1-40% by weight residual acetate.
Claim 4
Dependent Claim
21 words
A composition according to claim 1 wherein the molecular weight of said polyvinyl alcohol is from about 2000 to about 20,000.
Claim 5
Dependent Claim
25 words
A composition according to claim 1 wherein said polyvinyl alcohol is present in the composition from about 50.0 to 65.0% by weight of the composition.
Claim 6
Dependent Claim
23 words
A composition according to claim 4 wherein said polyvinyl alcohol is present at from about 61.0 to 67.0% by weight of the composition.
Claim 7
Dependent Claim
21 words
A composition according to claim 1 wherein said polyvinyl pyrrolidone has a molecular weight of from about 10,000 to about 360,000.
Claim 8
Dependent Claim
21 words
A composition according to claim 1 wherein said polyvinyl pyrrolidone has a molecular weight of from about 10,000 to about 40,000.
Claim 9
Dependent Claim
26 words
A composition according to claim 1 wherein said polyvinyl pyrrolidone is present in the composition at from about 15.0 to 28.0% by weight of the composition.
Claim 10
Dependent Claim
43 words
A composition according to claim 1 wherein said ethoxylated alkylphenol surfactant is present in the composition at from about 8.0 to about 15.0% by weight and wherein said polyhydric alcohol is present from about 8.0 to about 15.0% by weight of the composition.
Claim 11
Dependent Claim
13 words
A composition according to claim 9 wherein said polyhydric alcohol is propylene glycol.
Claim 12
Dependent Claim
33 words
A composition useful for forming a water-soluble film comprising: ______________________________________
Component % By Weight
______________________________________
a. Polyvinyl alcohol
50.0-65.0
b. Polyvinyl pyrrolidone
15.0-28.0
c. Ethoxylated alkylphenol
8.0-15.0
surfactant
d. Alkylene glycol 8.0-15.0
______________________________________
Claim 13
Dependent Claim
33 words
A composition useful for forming a water-soluble film comprising: ______________________________________
Component % By Weight
______________________________________
a. Polyvinyl alcohol
50.0-65.0
b. Polyvinyl pyrrolidone
15.0-28.0
c. Ethoxylated alkylphenol
8.0-15.0
surfactant
d. Alkylene glycol 8.0-15.0
______________________________________
Claim 14
Dependent Claim
13 words
A composition according to claim 11 wherein said alkylene glycol is propylene glycol.
Claim 15
Dependent Claim
39 words
A composition according to claim 11 wherein said polyvinyl alcohol has an average molecular weight of from about 10,000 to about 14,000 and wherein said polyvinyl pyrrolidone has an average molecular weight of from about 10,000 to about 40,000.
Claim 16
Dependent Claim
32 words
A composition useful for forming water-soluble films comprising: ______________________________________
Component % By Weight
______________________________________
a. Polyvinyl alcohol
61.0-67.0
b. Polyvinyl pyrrolidone
15.0-17.0
c. Ethoxylated Alkylphenol
8.0-12.0
surfactant
d. Alkylene glycol 8.0-12.0
______________________________________
Claim 17
Dependent Claim
32 words
A composition useful for forming water-soluble films comprising: ______________________________________
Component % By Weight
______________________________________
a. Polyvinyl alcohol
61.0-67.0
b. Polyvinyl pyrrolidone
15.0-17.0
c. Ethoxylated Alkylphenol
8.0-12.0
surfactant
d. Alkylene glycol 8.0-12.0
______________________________________
Claim 18
Dependent Claim
13 words
A composition according to claim 14 wherein said alkylene glycol is propylene glycol.
Claim 19
Dependent Claim
39 words
A composition according to claim 14 wherein said polyvinyl alcohol has an average molecular weight of from about 10,000 to about 14,000 and wherein said polyvinyl pyrrolidone has an average molecular weight of from about 10,000 to about 40,000.
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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) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |