US6046277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of redispersible polymer powders of polymer granules for coating pharmaceutical or agrochemical use forms
Assignee: BASF SE
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Filing: 1998-03-10
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Granted: 2000-04-04
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Expires: 2018-03-10
Abstract
Abstract The use of redispersible polymer powders or polymer granules for coating pharmaceutical or agrochemical use forms, consisting of a) 10-95% by weight of polyvinyl acetate, b) 5-90% by weight of an N-vinylpyrrolidone-containing polymer, c) 0-20% by weight of another water-soluble or water-swellable substance and d) 0-20% by weight of a water-insoluble dusting agent with or without e) other additives.
Inventors
- 👤 Karl Kolter
- 👤 Kristin Tiefensee
- 👤 Reinhold Stadler
- 👤 Katrin Zeitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:14
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2806; A61K9/2833; A61K9/284; A01; A01N; A01N25/00; A01N25/26; A61K9/48; A61K9/50; A61K9/5005; A61K9/5021; A61K9/5026; A61K9/2813; A61K9/501
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
52 words
A coating composition for pharmaceutical or agrochemical forms which consisting of a) 10-95% by weight of polyvinyl acetate, b) 5-90% by weight of an N-vinylpyrrolidone-containing polymer, c) 0-20% by weight of another water-soluble or water-swellable substance and d) 0-20% by weight of a water-insoluble dusting agent with or without e) other additives.
Claim 2
Dependent Claim
52 words
A coating composition for pharmaceutical or agrochemical forms which consisting of a) 10-95% by weight of polyvinyl acetate, b) 5-90% by weight of an N-vinylpyrrolidone-containing polymer, c) 0-20% by weight of another water-soluble or water-swellable substance and d) 0-20% by weight of a water-insoluble dusting agent with or without e) other additives.
Claim 3
Dependent Claim
25 words
A composition as claimed in claim 1 which comprises as component b) a polymer from the group of polyvinylpyrrolidone, vinyl acetate/vinylpyrrolidone copolymers and mixtures thereof.
Claim 4
Dependent Claim
28 words
A composition as claimed in claim 1 which comprises as component c) a polymer from the group of cellulose derivatives, acrylate/methacrylate copolymers and polyvinyl alcohols or mixtures thereof.
Claim 5
Dependent Claim
32 words
A composition as claimed in claim 1 which comprises as component d) water-insoluble dusting agent from the group of cellulose, disperse silica, talc, bentonite, magnesium stearate and calcium phosphate or mixtures thereof.
Claim 6
Dependent Claim
14 words
A composition as claimed in claim 1 in the form of an aqueous dispersion.
Claim 7
Dependent Claim
58 words
A solid pharmaceutical or agrochemical composition having a core containing active ingredients and having a coating of a) 10-95% by weight of polyvinyl acetate, b) 5-90% by weight of an N-vinylpyrrolidone-containing polymer, c) 0-20% by weight of another water-soluble or water-swellable substance and d) 0-20% by weight of a water-insoluble dusting agent with or without e) other additives.
Claim 8
Dependent Claim
58 words
A solid pharmaceutical or agrochemical composition having a core containing active ingredients and having a coating of a) 10-95% by weight of polyvinyl acetate, b) 5-90% by weight of an N-vinylpyrrolidone-containing polymer, c) 0-20% by weight of another water-soluble or water-swellable substance and d) 0-20% by weight of a water-insoluble dusting agent with or without e) other additives.
Claim 9
Dependent Claim
25 words
A solid pharmaceutical composition as claimed in claim 6, from which the active ingredients are released in a period of from 0.25 to 24 hours.
Claim 10
Dependent Claim
26 words
A solid agrochemical composition as claimed in claim 6, from which the active ingredients are released in a period of from 6 weeks to 6 months.
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) | 2003-04-04 | 2003-10-04 | 2004-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-04 | 2007-10-04 | 2008-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-04 | 2011-10-04 | 2012-04-04 | $7700.00 | Window Closed / Lapsed |