Amorphous Poorly Water-Soluble Solid Composition With XRD Phase Control

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Solution Overview

Problem

There is a need for a new solid composition containing an amorphous poorly water-soluble material and a method for producing the same, as well as a method for easily determining the proportion of crystalline and amorphous materials in such compositions.

Innovation Solution

A solid composition comprising amorphous poorly water-soluble materials, hydroxypropylmethyl cellulose (HPMC), and polysaccharides of 5 or more sugars, with an XRD analysis value of 4.0% or less, and a method for calculating the proportion of crystalline and amorphous materials using XRD analysis and calibration curves.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional amorphization methods are used (organic solvent method, heating and melting), then water solubility of poorly water-soluble material is improved, but the composition becomes complex and manufacturing becomes difficult

Engineering Contradiction:

Improvewater solubilityVSAvoidmanufacturing difficulty

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The invention changes the physical state parameter of the poorly water-soluble material from crystalline to amorphous, which fundamentally alters its solubility properties. By controlling the amorphization process through specific parameters (heating to melting point, rapid cooling), the invention achieves high water solubility while maintaining manufacturing simplicity

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite system where the amorphous poorly water-soluble material is combined with specific excipients (hydroxypropylmethyl cellulose and polysaccharides) to form a stable solid composition. This composite approach enhances solubility while providing a straightforward manufacturing process through simple mixing and compression

Inventive Principle:

Principle #40Composite materials

2Reliability

If amorphization is achieved through complex processes, then absorbability in the body is improved, but the process complexity increases

Engineering Contradiction:

ImproveabsorbabilityVSAvoidprocess complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The invention utilizes parameter change (crystalline to amorphous transition) to fundamentally improve absorbability. The amorphous state increases bioavailability by eliminating crystal lattice energy barriers to dissolution, while the process remains simple involving only heating to melting point and rapid cooling

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention exploits the phase transition from crystalline to amorphous state through controlled melting and rapid cooling. This phase transition is the key mechanism for enhancing absorbability, as the amorphous form dissolves more rapidly and completely in biological fluids, while the process itself remains mechanically simple

Inventive Principle:

Principle #36Phase transitions

3Manufacturing precision

If the proportion of crystalline and amorphous materials needs to be determined accurately, then quality control is improved, but measurement complexity increases

Engineering Contradiction:

Improvequality controlVSAvoidmeasurement complexity

Core Design Contradiction:

Manufacturing precisionVSDifficulty of detecting and measuring

Solution Approach 1:

The invention replaces complex analytical methods with X-ray diffraction (XRD) analysis, which provides a straightforward way to distinguish and quantify crystalline versus amorphous content. The XRD method substitutes for more complex spectroscopic or chromatographic methods by utilizing the fundamental difference in X-ray scattering patterns between crystalline and amorphous phases

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The invention utilizes the distinctive XRD pattern 'signature' as an analytical indicator - crystalline materials produce sharp diffraction peaks while amorphous materials produce broad halos. This pattern recognition approach simplifies quantification, allowing the proportion of crystalline and amorphous materials to be determined by comparing peak areas in the XRD pattern

Inventive Principle:

Principle #32Color changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The composition provides high amorphous properties and long-term stability, allowing for easy determination and control of the crystalline and amorphous material proportions, enhancing the quality evaluation of the solid composition.

Implementation Method 1

a chart obtained when the solid composition is analyzed by a powder X-ray diffractometer

Methodology Applied

Scientific EffectX-ray diffraction: X-Ray

Implementation Method 2

an area of a halo peak in the range of 20=5 to 600 is represented by (S1) and an area of a sharp peak derived from a poorly water-soluble material in a crystalline state (1b)

Methodology Applied

Scientific EffectDiffraction: Diffraction

Data Source

PatentUS12453701B2Solid composition containing amorphous, poorly water-soluble material, and method for producing same

Publication Date: 2025.10.28 SAN EI GEN F F I INC

AI summary

The present invention provides a solid composition containing an amorphous poorly water-soluble material, and a method for producing the same. The solid composition of the present invention is a solid composition containing an amorphous poorly water-soluble material (1a), hydroxypropylmethyl cellulose (2), and one or more types of water-soluble polysaccharides (3) other than hydroxypropylmethyl cellulose, and is characterized in that an XRD analysis value of the solid composition is 4.0% or less.