Acrylic Plastisol Composition for Wash-Resistant Textile Ink
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Solution Overview
Problem
Textile inks using acrylic resin plastisol lack sufficient washing resistance and crocking resistance, and existing solutions do not effectively address these issues.
Innovation Solution
An acrylic polymer with specific composition and structure, including an acetone-soluble portion and an acetone-insoluble portion, is used to create a plastisol that, when combined with a plasticizer, forms a textile ink with enhanced washing resistance and crocking resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If acrylic resin plastisol is used instead of polyvinyl chloride plastisol, then environmental load is reduced, but washing resistance and crocking resistance become insufficient
Solution Approach 1:
The invention changes the molecular weight parameters of the acrylic polymer to achieve the desired balance. Specifically, it uses acrylic polymer with weight-average molecular weight Mw of 50,000 to 500,000 and number-average molecular weight Mn of 5,000 to 50,000, creating a specific molecular weight distribution that improves washing and crocking resistance while maintaining environmental benefits
Solution Approach 2:
The invention creates a composite plastisol system by combining acrylic polymer with specific molecular weight characteristics and polyvinyl chloride plasticizer. This composite approach allows the acrylic polymer to provide environmental benefits while the optimized molecular structure provides the necessary mechanical performance and resistance properties
2Reliability
If blocked isocyanate and curing agent are added to acrylic resin plastisol, then washing resistance and crocking resistance are improved, but coating complexity increases
Solution Approach 1:
The invention extracts and removes the blocked isocyanate and curing agent components from the plastisol formulation. By eliminating these additional chemical components, the invention simplifies the coating composition while maintaining improved washing and crocking resistance through the optimized acrylic polymer molecular weight distribution alone
3Ease of operation
If acrylic polymer with low molecular weight is used, then flexibility is improved, but washing resistance becomes insufficient
Solution Approach 1:
The invention optimizes the molecular weight parameters by setting weight-average molecular weight Mw to 50,000 to 500,000 and number-average molecular weight Mn to 5,000 to 50,000. This specific parameter range creates a molecular weight distribution that balances flexibility (adequate Mn) with washing resistance (adequate Mw), resolving the contradiction between these two properties
Data Source
AI summary
There are provided an acrylic polymer and plastisol using which a textile ink having excellent washing resistance and crocking resistance can be produced and a textile ink having excellent washing resistance and crocking resistance. The acrylic polymer of the present invention is an acrylic polymer comprising an acetone-soluble portion (A) and an acetone-insoluble portion (B), and the content of the acetone-insoluble portion (B) in the acrylic polymer is 5 mass% to 29 mass%, and the content of methyl methacrylate units in the acetone-soluble portion (A) is 60 mass% to 85 mass%.