Patent GB2160208A successfully refreshed from Google Patents.
GB2160208A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Sterilised powders of Poly (3-hydroxybutyrate)
Assignee: Imperial Chemical Industries Ltd
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Filing: 1985-05-15
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Granted: —
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Expires: 2005-05-15
Abstract
Abstract A medical dusting powder comprises a sterilised, particulate, 3-hydroxybutyrate polymer. The sterilisation may be effected by treatment with steam or by gamma -irradiation. The polymer may include up to 60 mole % of other hydroxy-carboxylate units.
Inventors
- 👤 Dr Paul Arthur Holmes
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-23 12:57
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/02; A61L2/08; A61L2/081; A61L2/04; A61L2/06; C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; A61L2103/00; A61L2103/05
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
14 words
A process of making a medical dusting powder comprising sterilising a particulate 3hydroxybutyrate polymer.
Claim 2
Dependent Claim
14 words
A process of making a medical dusting powder comprising sterilising a particulate 3hydroxybutyrate polymer.
Claim 3
Dependent Claim
18 words
A process according to claim 1 wherein the particulate polymer has an average particle size below 30 um.
Claim 4
Dependent Claim
22 words
A process according to claim 1 or claim 2 wherein the 3-hydroxybutyrate polymer contains at least 80 mole % of 3-hydroxybutyrate units.
Claim 5
Dependent Claim
16 words
A process according to claim 3 wherein the 3-hyd roxybutyrate polymer is a 3-hyd roxybutyrate homopolymer.
Claim 6
Dependent Claim
18 words
A process according to claim 4 wherein the sterilisation is effected by heating to a temperature above 140"C.
Claim 7
Dependent Claim
17 words
A process according to any one of claims 1 to 4 wherein sterilisation is effected by -irradiation.
Claim 8
Dependent Claim
11 words
A sterile medical dusting powder comprising a sterilised particulate 3-hydroxybutyrate polymer.
Claim 9
Dependent Claim
11 words
A sterile medical dusting powder comprising a sterilised particulate 3-hydroxybutyrate polymer.
References Cited (Backward Citations)
No citation records indexed.
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