- Patent Title: Composition of matter effluent from refiner of a wet laid process
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Application No.: US16522931Application Date: 2019-07-26
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Publication No.: US11306433B2Publication Date: 2022-04-19
- Inventor: Charles Stuart Everett , Melvin Glenn Mitchell , Kenny Randolph Parker , Koushik Ghosh , Mounir Izallalen
- Applicant: Eastman Chemical Company
- Applicant Address: US TN Kingsport
- Assignee: Eastman Chemical Company
- Current Assignee: Eastman Chemical Company
- Current Assignee Address: US TN Kingsport
- Agent Polly C. Owen; Dennis V. Carmen
- Main IPC: D21C9/08
- IPC: D21C9/08 ; D21H11/14 ; D21H11/04 ; D21H11/06 ; D21H11/08 ; D21H13/06

Abstract:
A composition and process for making the composition by co-refining: fibrillated virgin cellulose fibers, waste/recycle cellulose fibers, or both; co-refined cellulose ester (CE) staple fibers having a denier per filament (DPF) of less than 3 and the weight percent of CE staple fibers is less than 30 wt. %, based on the weight of CE staple fibers and said cellulose fibers; and water. The composition can be co-refined to obtain lower Canadian standard freeness yet improved drainage and wet laid products having good tensile strength, air permeability, stiffness, burst strength, and bulk.
Public/Granted literature
- US20200063339A1 COMPOSITION OF MATTER EFFLUENT FROM REFINER OF A WET LAID PROCESS Public/Granted day:2020-02-27
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