Artificial Skin Composition Rapid Cross-Linking

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Solution Overview

Problem

Existing artificial skin coating technologies require either expensive electrostatic spray equipment or take a long time for cross-linking, necessitating a solution that can shorten cross-linking time while maintaining application and coating performance.

Innovation Solution

A composition comprising a first agent with organopolysiloxanes containing carbon-carbon double bonds or triple bonds and a second agent with a cross-linking catalyst, where the first agent includes a low viscosity silicone, allowing for rapid cross-linking within 30 seconds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If electrostatic spray equipment is used to form artificial skin coating, then application performance and coating quality are improved, but equipment cost and operational complexity increase

Engineering Contradiction:

Improvecoating qualityVSAvoidequipment complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent replaces the electrostatic spray mechanical system with a simple brush application method. The composition is applied using a brush instead of requiring complex electrostatic spray equipment, while still achieving uniform coating and proper fiber formation on the skin surface.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The invention uses a simple, inexpensive brush for application instead of expensive, complex electrostatic spray equipment. The brush is a disposable or reusable simple tool that eliminates the need for costly specialized equipment while achieving the same coating result.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Ease of operation

If conventional cross-linking formulation is used for artificial skin, then application ease is improved, but cross-linking time increases

Engineering Contradiction:

Improveapplication easeVSAvoidcross-linking time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The patent changes the chemical parameters of the cross-linking system by using a platinum catalyst with organopolysiloxane polymers containing carbon-carbon double bonds or triple bonds. This chemical parameter change reduces the cross-linking time from minutes to 30 seconds or less while maintaining ease of application.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite cross-linking system combining polymer A (with carbon-carbon double bonds or triple bonds), polymer B (with Si-H units), and a platinum catalyst. This composite material system achieves both ease of application and rapid cross-linking within 30 seconds.

Inventive Principle:

Principle #40Composite materials

3Loss of time

If rapid cross-linking is achieved using conventional methods, then cross-linking time is reduced, but application performance and coating quality deteriorate

Engineering Contradiction:

Improvecross-linking timeVSAvoidcoating quality

Core Design Contradiction:

Loss of timeVSManufacturing precision

Solution Approach 1:

The patent uses a composite material system with polymer A containing carbon-carbon double bonds or triple bonds, polymer B containing Si-H units, and a platinum catalyst. This composite formulation achieves rapid cross-linking within 30 seconds while maintaining excellent coating quality and uniform fiber formation.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The invention optimizes the viscosity parameter by including a silicone with viscosity of 1.5 mPa·s or less at 25°C, which enables rapid cross-linking while maintaining good application performance and coating quality. The chemical composition parameters are specifically tuned to achieve both speed and quality.

Inventive Principle:

Principle #35Parameter 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 achieves rapid cross-linking of the artificial skin within 30 seconds or less while maintaining excellent application and coating performance, reducing the need for expensive equipment and long waiting times.

Implementation Method 1

a polymer A composed of one or more organopolysiloxanes containing at least two carbon-carbon double bonds or at least one carbon-carbon triple bond in the molecule; (b) a polymer B composed of one or more organopolysiloxanes containing at least two Si—H units in the molecule

Methodology Applied

Scientific EffectCross-linking: Chemical Bonding

Implementation Method 2

the second agent comprises a catalyst that promotes cross-linking of the polymer A and the polymer B

Methodology Applied

Scientific EffectCatalysis: Catalysis

Data Source

PatentUS20230090479A1Composition for forming artificial skin, and usage method therefor

Publication Date: 2023.03.23 SHISEIDO CO LTD

AI summary

There is provided a composition for forming an artificial skin that can shorten the cross-linking time while maintaining excellent application performance and coating performance.A composition for forming an artificial skin of the present disclosure comprises a first agent and a second agent, wherein the first agent comprises: (a) a polymer A composed of one or more organopolysiloxanes containing at least two carbon-carbon double bonds or at least one carbon-carbon triple bond in the molecule; (b) a polymer B composed of one or more organopolysiloxanes containing at least two Si—H units in the molecule; and (c) a silicone having a viscosity of 1.5 mPa·s or less at 25° C., and wherein the second agent comprises a catalyst that promotes cross-linking of the polymer A and the polymer B.