Biodegradable polyurea / polyurethane microcapsules

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AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
By combining amino acids and release agents in the microcapsule shell, the conflict between the stability and biodegradability of microcapsules is resolved, resulting in highly stable and biodegradable polyurea/polyurethane microcapsules that reduce microplastic pollution in the environment.

CN116490265BActive Publication Date: 2025-11-21SYMRISE GMBH & CO KG

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Patent Information

Application Number: CN202080105964.6
Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner
Filing Date: 2020-08-06
Publication Date: 2025-11-21
Estimated Expiration: 2040-08-06

Application Information

Patent Timeline

06 Aug 2020

Application

CN202080105964.6

21 Nov 2025

Publication

CN116490265B

IPC: B01J13/14; C11D3/50; C09B67/02; A61K9/50; A61K8/11; A23P10/30; A01N25/28; B01J13/20; B01J13/16

CPC: B01J13/14; B01J13/16; B01J13/206; C11D3/505; A23P10/30; A01N25/28; A61K8/11; A61Q19/00

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Application Domain

Biocide Cosmetic preparations

Technology Topics

Polymer science Printing ink

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AI Technical Summary

Technical Problem

Existing microcapsules suffer from plastic pollution and are difficult to biodegradable while maintaining stability and the release performance of active substances.

Method used

A method combining amino acids and a release agent within the microcapsule shell was employed. Biodegradable polyurea/polyurethane microcapsules were formed through targeted polymerization and crosslinking of polyisocyanates and amino acid hydrochlorides. The release agent was added to promote biodegradation.

Benefits of technology

It achieves effective encapsulation and targeted release of highly stable and active substances, while also possessing good biodegradability, reducing microplastic pollution in the environment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to a process for the preparation of biodegradable polyurea / polyurethane microcapsules, preferably fragrance-containing polyurea / polyurethane microcapsules, which have enhanced biodegradability compared to prior art microcapsules. Furthermore, the present invention relates to a biodegradable polyurea / polyurethane microcapsule comprising at least one lipophilic active substance obtainable according to the process of the present invention. In another aspect, the present invention described herein relates to the use of such microcapsules or of a polyurethane microcapsule dispersion comprising the microcapsules described in the present invention for the manufacture of a household product, a textile care product, a detergent, a fabric softener, a cleaning agent, a fragrance booster, a fragrance lotion and a fragrance enhancer, a cosmetic, a personal care product, an agricultural product, a pharmaceutical product or a paper printing ink. Finally, the present invention relates to a consumer product comprising such microcapsules or microcapsule dispersion.

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