US4295850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Commercial preparations of dry organic substances
Assignee: BASF Corp
•
Filing: 1980-05-23
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Granted: 1981-10-20
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Expires: 2000-05-23
Abstract
Abstract Stable dust-free commercial preparations of organic substances are described, which preparations comprise an organic substance especially a dyestuff or optical brightener in dry powder form enclosed in a covering, particularly in a sack or bag sealed on all sides, made from polyethylene oxide having a molecular weight of more than 200,000 and a thickness of 10 to 80μ, which covering is soluble in the same medium as the content.
Inventors
- 👤 Roland Haberli
- 👤 Hans Mollet
- 👤 Gustaaf Scherer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:49
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0097
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
57 words
Stable dust-free commercial preparations of organic substances, which preparations comprise an organic dyestuff, optical brightener or dyeing auxiliary substance in dry powder form enclosed in a covering having a thickness of 10 to 80μ, said covering forming a sack or bag sealed on all sides, made from polyethylene oxide having a molecular weight of more than 200,000.
Claim 2
Dependent Claim
57 words
Stable dust-free commercial preparations of organic substances, which preparations comprise an organic dyestuff, optical brightener or dyeing auxiliary substance in dry powder form enclosed in a covering having a thickness of 10 to 80μ, said covering forming a sack or bag sealed on all sides, made from polyethylene oxide having a molecular weight of more than 200,000.
Claim 3
Dependent Claim
34 words
Commercial preparation according to claim 1 having a polyethylene oxide covering made from a polymerisation product of ethylene oxide having a molecular weight of more than 200,000, which covering has a thickness of 50μ.
Claim 4
Dependent Claim
16 words
Commercial preparation according to claim 1 having a content of water-soluble reactive dyestuffs or cation-active dyestuffs.
Claim 5
Dependent Claim
24 words
Commercial preparation according to claim 1 having a content of organic dyestuffs soluble in organic solvents or of optical brighteners soluble in organic solvents.
Claim 6
Dependent Claim
32 words
Polyethylene oxide packages having a molecular weight of more than 200,000 and a sheet thickness of 10 to 80μ which contain a pulverulent organic substance soluble in water or in organic solvents.
Claim 7
Dependent Claim
32 words
Polyethylene oxide packages having a molecular weight of more than 200,000 and a sheet thickness of 10 to 80μ which contain a pulverulent organic substance soluble in water or in organic solvents.
Claim 8
Dependent Claim
54 words
Process for the manufacture of commercial preparations according to claim 1, wherein pulverulent organic substances soluble in water or in organic solvents are enclosed in a polyethylene oxide covering made from a polymerisation product of ethylene oxide having a molecular weight of more than 200,000, which covering has a thickness of 10 to 80μ.
References Cited (Backward Citations)
US4046507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-19 | 1985-04-20 | 1985-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-19 | 1989-04-20 | 1989-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-19 | 1993-04-20 | 1993-10-20 | $7700.00 | Window Closed / Lapsed |