Patent · US Active

Method of cleaning resins

US10967367B2 · kind B2 · utility

0Cited by

3References

7Claims

0Family size

Assignee

DDP Specialty Electronic Materials US, LLC. · US

Inventors

Chunxia Costeux · Midland, US
Liu Yang · Yorba Linda, US
Chengli Zu · Midland, US

Key dates

Filing date	Feb 10, 2017
Grant date	Apr 6, 2021
Priority date	—
Expiry date	Mar 10, 2037

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2231/347
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Provided is a method of cleaning a collection of resin beads, wherein the method comprises bringing the collection of resin beads into contact with an aqueous solution, wherein the aqueous solution comprises one or more dissolved amine compounds, wherein the collection of resin beads comprises polymer that comprises attached carboxylic acid groups or sulfonic acid groups or a mixture thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.