Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Directly compressible composition comprising microcrystalline cellulose

a technology of microcrystalline cellulose and composition, applied in the direction of pill delivery, etc., can solve the problems of unsatisfactory hardness of tablets which cannot be handled in pharmaceutical practice, inconvenient and expensive granulation steps, and the need to remove solvents necessary for wet granulation with high energy input, etc., to achieve low ejection force, low friabilities, and high tablet hardness

Inactive Publication Date: 2020-07-09
MERCK PATENT GMBH
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides directly compressible retardation matrices that save time and energy by eliminating the need for granulation processes. The matrices can be easily converted from commonly available PVAs and are suitable for tableting. The resulting tablets have low mechanical abrasion, are readily available for further treatment, and can provide extended release of active compound over several hours. This invention helps to improve the manufacturing efficiency and cost-effectiveness of tablet production.

Problems solved by technology

A particular problem in this connection thus consists in the production in a simple manner of tablets which principally consist of corresponding PVAs as active compound excipient in which the active compound is homogeneously distributed.
The latter is associated with the disadvantage that the solvents necessary for wet granulation have to be removed again with high input of energy.
However, known pulverulent PVAs are per se not directly compressible and give tablets of unsatisfactory hardness which cannot be handled in pharmaceutical practice, since, for example, they have an undesired tendency to break or have excessively high abrasion.
Excipient materials of this type would make inconvenient and expensive granulation steps, which are usually necessary in order to make the tableting mixtures compressible, superfluous.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Directly compressible composition comprising microcrystalline cellulose
  • Directly compressible composition comprising microcrystalline cellulose
  • Directly compressible composition comprising microcrystalline cellulose

Examples

Experimental program
Comparison scheme
Effect test

examples

[0089]The present description enables the person skilled in the art to apply the invention comprehensively. Even without further comments, it is therefore assumed that a person skilled in the art will be able to utilise the above description in the broadest scope.

[0090]If anything is unclear, it goes without saying that the publications and patent literature cited should be consulted. Accordingly, these documents are regarded as part of the disclosure content of the present description.

[0091]For better understanding of the invention and in order to illustrate it, examples are given below which are within the scope of protection of the present invention. These examples also serve to illustrate possible variants. Owing to the general validity of the inventive principle described, however, the examples are not suitable for reducing the scope of protection of the present application to these alone.

[0092]Furthermore, it goes without saying to the person skilled in the art that, both in t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a directly compressible composition for the production of tablets which comprise fine-grained polyvinyl alcohols (PVAs) and fine-grained microcrystalline celluloses (MCCs) in a co-mixture. The present invention also relates to the use of this mixture and to a process for the preparation thereof.

Description

[0001]The present invention relates to a directly compressible composition for the production of tablets which comprise fine-grained polyvinyl alcohols (PVAs) and fine-grained microcrystalline celluloses (MCCs) in a co-mixture. The present invention also relates to the use of this mixture and to a process for the preparation thereof.PRIOR ART[0002]Polyvinyl alcohols (PVAs) are synthetic polymers which are available in various grades, in particular with respect to degree of polymerisation and their viscosity. Polyvinyl alcohols are obtained by alkaline hydrolysis of polyvinyl acetate. Polyvinyl acetate is in turn obtained by free-radical polymerisation from vinyl acetate. Through different chain lengths and different degrees of hydrolysis of the polyvinyl acetates employed, polyvinyl alcohols (PVAs) having a very wide variety of physical properties can be obtained. Polyvinyl alcohols are employed, in particular, as film formers, adhesive gels and as viscosity modulator, in a multipli...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): A61K9/20
CPCA61K9/2054A61K9/2027A61K9/2095
Inventor OGNIBENE, ROBERTOBAUER, FINNWEDEL, THORSTENMODDELMOG, GUENTER
Owner MERCK PATENT GMBH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com