Methods and apparatus for removing dissolved gases from fermentation streams
US-9221734-B2 · Dec 29, 2015 · US
Selective production method for D-mannitol α-form crystal using spray-drying method
US9918938B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9918938-B2 |
| Application number | US-201415024622-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 29, 2014 |
| Priority date | Sep 30, 2013 |
| Publication date | Mar 20, 2018 |
| Grant date | Mar 20, 2018 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
An object of the present invention is to provide a method for producing selectively a powder particle consisting of the α-form crystal of D-mannitol, using the spray-drying method. It is a method for selective production of powder particles consisting of the α-form crystal of D-mannitol, wherein a D-mannitol solution containing a water-soluble polymer is spray-dried.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing selectively an α-form crystal of D-mannitol, comprising a step of performing spray drying of a solution consisting essentially of D-mannitol and a water-soluble polymer, wherein the solution is a mixture solution of a water-soluble organic solvent and water or an aqueous solution, wherein the water-soluble polymer is pectin, carboxyvinyl polymer, brown algae extract, locust bean gum, sodium alginate, hydroxyethyl cellulose, hydroxypropyl cellulose, hypromellose, methyl cellulose, sodium carboxy methylcellulose, xanthan gum, polyethylene oxide, polyethylene glycol, polyvinyl pyrrolidone, polyvinyl alcohol, or polyvinyl pyrrolidone vinylacetate, wherein the content of the water-soluble polymer in the solution is 1% to 60% by weight with respect to D-mannitol. 2. The method according to claim 1 , wherein the water-soluble organic solvent is a C1 to C6 alcohol-based solvent or a C3 to C5 ketone-based solvent. 3. The method according to claim 1 , wherein the water-soluble polymer is polyethylene glycol, polyvinyl pyrrolidone, or polyvinyl alcohol. 4. The method according to claim 1 , wherein the water-soluble polymer is polyethylene glycol. 5. The method according to claim 1 , wherein the molecular weight of the water-soluble polymer is 190 g/mol to 25000 g/mol. 6. The method according to claim 1 , wherein the water-soluble polymer is polyethylene glycol 4000. 7. The method according to claim 1 , wherein the content of the water-soluble polymer in the solution is 2% by weight or more with respect to D-mannitol. 8. The method according to claim 1 , wherein the content of the water-soluble polymer in the solution is 5% by weight or more with respect to D-mannitol. 9. The method according to claim 1 , wherein the content of the water-soluble polymer in the solution is 10% by weight or more with respect to D-mannitol.
Assignees
Inventors
Classifications
by condensation or crystallisation · CPC title
Processes · CPC title
- C07C29/76Primary
by physical treatment · CPC title
Hexahydroxylic alcohols · CPC title
obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, poloxamers · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9918938B2 cover?
- An object of the present invention is to provide a method for producing selectively a powder particle consisting of the α-form crystal of D-mannitol, using the spray-drying method. It is a method for selective production of powder particles consisting of the α-form crystal of D-mannitol, wherein a D-mannitol solution containing a water-soluble polymer is spray-dried.
- Who is the assignee on this patent?
- Daiichi Sankyo Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C07C29/76. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 20 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).