Glove

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Solution Overview

Problem

Gloves made from aqueous urethane resin compositions face challenges with poor oil grip properties, which are essential for industrial applications where machine oil is handled, and existing alternatives may cause allergies or have environmental concerns.

Innovation Solution

A glove skin made from an aqueous urethane resin composition incorporating a specific fluorine compound, such as a polymer of a fluorinated alkyl group and a polyoxyethylene structure, or a poly(perfluoroalkylene ether) chain, enhances oil grip properties while minimizing environmental impact.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If aqueous urethane resin is used as glove material, then environmental burden is reduced, but oil grip properties deteriorate

Engineering Contradiction:

Improveenvironmental burdenVSAvoidoil grip properties

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The invention uses a composite material system consisting of aqueous urethane resin as the base material combined with specific fluorine compounds (containing polyoxyethylene structures and fluorinated alkyl groups) as functional additives. This composite approach allows the glove to maintain the environmental benefits of aqueous resin while gaining superior oil grip properties from the fluorine compound modification

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The invention changes the chemical composition parameters of the aqueous urethane resin by incorporating fluorine compounds with specific molecular structures (polyoxyethylene structures and fluorinated alkyl groups). This parameter modification transforms the surface properties of the resin to achieve both low environmental burden and high oil grip performance

Inventive Principle:

Principle #35Parameter changes

2Reliability

If solvent-type urethane resin is used to achieve good oil grip, then grip performance is improved, but environmental burden increases

Engineering Contradiction:

Improveoil grip propertiesVSAvoidenvironmental burden

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention changes the solvent parameter from organic solvents to water-based aqueous medium, eliminating the environmental burden of solvent-type resins. Simultaneously, it adjusts the compositional parameters by adding fluorine compounds to the aqueous system to achieve oil grip properties comparable to or exceeding those of solvent-type resins

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite aqueous system combining urethane resin with fluorine compounds, replacing the need for solvent-type resins. This composite material achieves dual functionality: environmental friendliness from the aqueous base and superior oil grip from the fluorine compound modification

Inventive Principle:

Principle #40Composite materials

3Strength

If natural gums or synthetic gums are used for elasticity, then rubber elasticity is achieved, but allergy risk increases

Engineering Contradiction:

Improverubber elasticityVSAvoidallergy risk

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The invention uses disposable aqueous urethane resin gloves that do not require repeated use. This approach eliminates the need for materials with high elasticity like natural gums, as the glove is designed for single-use applications where elasticity requirements are met by the aqueous resin formulation rather than elastic gum materials

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The invention replaces allergy-prone elastic materials (natural gums, synthetic gums) with a composite aqueous urethane resin system. This substitution eliminates contact allergy risks while maintaining sufficient mechanical properties for glove applications through the resin- fluorine compound composite

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS10863785B2Glove

Publication Date: 2020.12.15 DIC CORP

AI summary

The present invention provides a glove having a skin made from an aqueous urethane resin composition including an aqueous urethane resin (A), an aqueous medium (B), and a fluorine compound (C), in which the fluorine compound (C) is a fluorine compound (C-1) that is a polymer of a polymerizable monomer (c1-1) having a fluorinated alkyl group having 4 to 6 carbon atoms and a polymerizable monomer (c1-2) having a polyoxyethylene structure represented by general formula (2), or a fluorine compound (C-2) that is a polymer of a polymerizable monomer (c2-1) having a polymerizable unsaturated group at both ends of a poly(perfluoroalkylene ether) chain and a polymerizable monomer (c2-2) having a polyoxyalkylene structure represented by general formula (4).