Copolymer Coating Composition Rapid Dispersion Viscosity Control
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Solution Overview
Problem
Current coating and binding agents for pharmaceutical, nutraceutical, and cosmetic applications face challenges with long dispersion times, high viscosity, and toxicity concerns, particularly with additives like sodium laurylsulfate, which affect the efficiency and safety of the coating or binding processes.
Innovation Solution
A powdery or granulated composition comprising at least 30% of a copolymer composed of C1- to C4-alkyl esters of acrylic or methacrylic acid with tertiary amino groups, combined with 5-28% of a fatty monocarboxylic acid salt and 10-30% of a fatty monocarboxylic acid or fatty alcohol, designed for rapid dispersion in water with low toxicity and suitable viscosity for effective coating and binding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If additives like emulsifiers are added to copolymers to enable rapid dispersion, then dispersion time is reduced, but viscosity increases and water vapor permeability increases
Solution Approach 1:
The patent changes the chemical composition parameters by incorporating tertiary amino groups in the copolymer structure and using specific fatty acid salts (10-18 carbon atoms) and fatty alcohols (8-18 carbon atoms) in controlled proportions. This compositional parameter change enables rapid dispersion without the need for excessive emulsifiers, thereby controlling viscosity and water vapor permeability
Solution Approach 2:
The invention creates a composite material system combining copolymer units with tertiary amino groups, fatty acid salts, and fatty alcohols in specific ratios (5-28% salt, 10-30% acid/alcohol based on copolymer weight). This composite approach achieves synergistic effects where the combination of components provides rapid dispersion capability while maintaining appropriate viscosity and permeability properties
2Productivity
If traditional emulsifiers like sodium laurylsulfate are used to achieve rapid dispersion, then dispersion efficiency improves, but toxicity increases
Solution Approach 1:
The patent extracts and eliminates traditional harmful emulsifiers like sodium laurylsulfate from the formulation. Instead, it uses inherently safer components (fatty acid salts and fatty alcohols with specific carbon chain lengths) that provide the necessary dispersion assistance without the high toxicity associated with conventional emulsifiers
Solution Approach 2:
The invention replaces persistent, potentially harmful chemical emulsifiers with naturally derived, biodegradable fatty acid salts and fatty alcohols. These alternative components are less toxic and more environmentally friendly, maintaining dispersion efficiency while reducing harmful effects
3Speed
If high concentrations of additives are used to reduce dispersion time, then dispersion speed increases, but viscosity becomes too high for coating processes
Solution Approach 1:
The patent optimizes the concentration parameters of additives by specifying precise ranges: 5-28% fatty acid salt and 10-30% fatty acid/alcohol based on copolymer weight. These controlled parameter changes achieve rapid dispersion while preventing excessive viscosity increase that would hinder coating processability
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 allows for rapid dispersion and processing as a coating or binding agent with low viscosity and minimal toxicity, enhancing the efficiency and safety of pharmaceutical, nutraceutical, and cosmetic formulations while maintaining effective coating and binding properties.
Implementation Method 1
a copolymer composed of polymerized units of C 1 - to C 4 -alkyl esters of acrylic or methacrylic acid and of alkyl(meth)acrylate monomers with a tertiary amino group in the alkyl radical
Implementation Method 2
The dispersed aqueous compositions show a low viscosity and can therefore be processed directly as coating and binding agents
Implementation Method 3
5 to 28 % by weight based on (a) of a salt of a fatty monocarboxylic acid having 10 to 18 carbon atoms, and (c) 10 to 30 % by weight based on (a) of fatty monocarboxylic acid having 8 to 18 carbon atoms and/or a fatty alcohol having 8 to 18 carbon atoms
Data Source
AI summary
The invention relates to a powdery or granulated composition comprising at least by 30 % by weight of a mixture of (a) a copolymer composed of polymerized units of C1- to C4-alkyl esters of acrylic or methacrylic acid and of alkyl(meth)acrylate monomers with a tertiary amino group in the alkyl radical and (b) 5 to 28 % by weight based on (a) of a salt of a fatty monocarboxylic acid having 10 to 18 carbon atoms, and (c ) 10 to 30 % by weight based on (a) of fatty monocarboxylic acid having 8 to 18 carbon atoms and/or a fatty alcohol having 8 to 18 carbon atoms.