UV-Absorbing Polymers with 2-Cyano-3,3-Diphenyl Moieties

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current polymers and coatings lack effective UV-absorbing, water-resistant, and photostable properties, leading to damage from UV radiation and degradation of materials used in sunscreens and coatings, which results in skin damage and loss of physical and protective properties.

Innovation Solution

Polymers comprising 2-cyano-3,3-diphenyl-prop-2-enoic acid moieties are integrated into the polymer backbone, enhancing UV-absorbing, photostabilizing, and waterproofing capabilities by forming films or coatings that protect against UV radiation and water.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional polymers and coatings are used, then the basic protective function is provided, but UV-absorbing, water-resistant, and photostable properties are insufficient, leading to material degradation and skin damage

Engineering Contradiction:

ImproveUV-absorbing and photostable propertiesVSAvoiddamage from UV radiation

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent modifies the chemical structure of polymer monomers by incorporating specific UV-absorbing groups (such as benzophenone, cinnamate, or salicylate moieties) into the polymer backbone. This structural parameter change enables the polymer itself to absorb UV radiation, transforming the material from UV-transparent to UV-absorbing, thereby providing inherent photoprotection without requiring separate UV filter additives.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates composite polymer structures by combining monomers with different functional groups - some providing structural integrity while others provide UV-absorbing capabilities. These composite polymer systems integrate multiple functions (mechanical strength, flexibility, and UV protection) into a single material system, eliminating the need for separate coating layers for each function.

Inventive Principle:

Principle #40Composite materials

2Stability of the object's composition

If polymers lack effective UV-absorbing properties, then material simplicity is maintained, but photodegradation occurs leading to color fading, loss of gloss, and loss of physical properties

Engineering Contradiction:

ImprovephotostabilityVSAvoidcolor fading and loss of physical properties

Core Design Contradiction:

Stability of the object's compositionVSLoss of substance

Solution Approach 1:

The patent incorporates UV-absorbing functional groups directly into the polymer backbone during the polymerization process, before the material is exposed to UV radiation. This preliminary incorporation ensures that the polymer has inherent UV protection capabilities from the outset, preventing photodegradation before it can occur rather than attempting to repair damage after exposure.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The invention transforms the potentially harmful effect of UV radiation into a beneficial protective mechanism by designing polymers that absorb UV energy and dissipate it as harmless heat through their molecular structure. The UV-absorbing groups act as molecular shields that convert the harmful radiant energy into thermal energy that is safely dissipated, protecting the material from degradation.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Ease of operation

If conventional coatings are applied to provide basic protection, then application simplicity is maintained, but water resistance and enhanced UV protection are not achieved

Engineering Contradiction:

Improveease of applicationVSAvoidwater resistance and UV protection

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent designs polymers with multi-functional monomers that simultaneously provide structural properties, UV absorption, and water resistance. A single polymer coating formulation delivers multiple protective functions - mechanical strength, UV filtration, and hydrophobicity - eliminating the need for separate specialized coatings for each function and simplifying the overall protection system.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 polymers demonstrate improved UV-absorbing and photostabilizing properties, reducing damage from UV radiation and enhancing the water resistance of materials, thereby protecting skin and coatings from degradation.

Implementation Method 1

UV-absorbing and photostabilizing compounds in compositions such as sunscreens and coatings can serve to reducing the damaging effects of UV radiation

Methodology Applied

Scientific EffectUV absorption: Absorption (EM radiation)

Implementation Method 2

Ultraviolet radiation from the sun or artificial sources also can damage coatings containing photoactive substances, such as photoactive pigments and dyes, by altering chemical bonds in the structure of a component, such as a polymer, a pigment, or a dye. This photodegradation can lead to color fading, loss of gloss, and loss of physical and protective properties of a coating

Methodology Applied

Scientific EffectPhotostabilization:

Data Source

PatentUS7964245B2UV-absorbing and photostabilizing polymers

Publication Date: 2011.06.21 HALLSTAR BEAUTY AND PERSONAL CARE INNOVATIONS COMPANY

AI summary

Polymers comprising monomers having 2-cyano-3,3-diphenyl-prop-2-enoic acid moieties having the formulaare disclosed. Compositions comprising said polymers and methods for increasing the UV-absorbing, water resistance, and photostabilizing properties of compositions comprising such polymers also are disclosed.