Carbonic acid modified nitrile-based copolymer latex, latex composition for dipping and molded articles formed therefrom
Patent Information
- Application Number
- DE602021044180
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2020-12-11
- Filing Date
- 2021-02-08
- Publication Date
- 2025-12-10
- Estimated Expiration
- 2041-02-08
AI Technical Summary
Nitrile-based rubber gloves lack sufficient elongation and softness, which hinders their replacement of natural rubber gloves in applications requiring excellent fit and long wear, such as surgical gloves, due to the risk of protein allergies and reduced chemical resistance.
A carboxylic acid-modified nitrile-based copolymer latex is developed with controlled monomer content and capillary viscosity, comprising 65.5 wt% to 82.5 wt% of a conjugated diene-based monomer, 15 wt% to 30 wt% of an ethylenic unsaturated nitrile-based monomer, and 2.5 wt% to 4.5 wt% of an ethylenic unsaturated acid monomer, to improve elongation and softness.
The latex composition enhances the elongation and softness of molded articles, ensuring a better fit and comfort while maintaining tensile strength and durability, thus addressing the limitations of conventional nitrile-based gloves.