Grinding process for high viscosity cellulose ethers

Details Grinding process for high viscosity cellulose ethers Grinding process for high viscosity cellulose ethers

1988-02-12

1989-04-11

Foelak, Morton

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 85, 536 86, 536 88, B27J 700, B27J 1100, C01B 100

Patent

active

048208132

ABSTRACT:
High viscosity cellulose ether products are produced by grinding a substantially dry high molecular weight cellulose ether under conditions of mild mechanical impact such as those encountered in a high speed air swept impact mill. It has been found that such a cellulose ether product has several times the intrinsic viscosity of a product of substantially equivalent particle size by ball mill or hammer mill grinding.

REFERENCES:
patent: 2814619 (1957-11-01), Sloan
patent: 2814620 (1957-11-01), Stewart et al.
patent: 4076935 (1978-02-01), Eichenseer et al.
patent: 4091205 (1978-05-01), Onda et al.
patent: 4415124 (1983-11-01), Carduck et al.
patent: 4581446 (1986-04-01), Schulz

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