Topical UV-Filter Composition With Low Surface Transfer

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Sun care products with high SPF and UVA protection often have unpleasant sensorial properties due to high oil content, and they transfer to other surfaces, causing contamination and aesthetic issues.

Innovation Solution

Incorporating nano-sized 1,4-di(benzoxazol-2'-yl)benzene into topical compositions with liquid UV-filter oils reduces material transfer to contacted surfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If high amounts of liquid UV-filter oils are used to achieve high SPF and UVA protection, then UV protection efficacy is improved, but sensorial properties deteriorate and material transfer increases

Engineering Contradiction:

ImproveUV protection efficacyVSAvoidmaterial transfer

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent introduces a polymeric thickener as an intermediary substance that modifies the rheological properties of the UV-filter oil composition. This thickener creates a gel-like structure that reduces oil transfer to surfaces while maintaining UV protection efficacy, effectively mediating between the conflicting requirements of high SPF and low material transfer

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the physical parameters of the UV-filter oil composition by adjusting viscosity through the addition of polymeric thickeners and modifying the concentration of liquid UV-filters. These parameter changes reduce the流动性 of the oil, thereby minimizing material transfer to surfaces while preserving the UV absorption capabilities

Inventive Principle:

Principle #35Parameter changes

2Reliability

If high amounts of liquid UV-filter oils are used to achieve high SPF and UVA protection, then UV protection efficacy is improved, but sensorial properties deteriorate

Engineering Contradiction:

ImproveUV protection efficacyVSAvoidsensorial properties

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent modifies the sensory properties by changing the viscosity and texture parameters of the composition through polymeric thickeners. This creates a more pleasant sensorial experience (reduced greasiness, better spreadability) while maintaining the necessary UV protection levels through optimized UV-filter concentrations

Inventive Principle:

Principle #35Parameter changes

3Reliability

If liquid UV-filter oils are transferred to other surfaces, then the site of action is depleted, but surface contamination occurs

Engineering Contradiction:

Improveprotective functionVSAvoidsurface contamination

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The polymeric thickener acts as a mediator that binds to the liquid UV-filter oils and modifies their interaction with surfaces. This intermediary substance prevents direct transfer of oils to contacted surfaces, reducing contamination while keeping the UV-active ingredients at the application site

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP3768231B1Topical composition

Publication Date: 2026.02.25 DSM IP ASSETS BV

Figure 1

AI summary

The present invention relates to topical compositions comprising at least one liquid UV-filter and a nano-sized 1,4-di(benzoxazol-2'-yl)benzene.