IMPROVED COMPOSITION OF UNBLEACHED COTTON LINT, METHOD FOR ITS PREPARATION AND APPLICATION Russian patent published in 2010 - IPC C08B1/00 D21H11/12 D21H11/16 C08B11/00 C08B11/193 C08B15/02 C08B15/05 

FIELD: textile, paper.

SUBSTANCE: present invention relates to ground fibres of unbleached cotton lint in the form of loose mass. Loose mass has specific weight of at least 8 g/100 ml. At least 50% of loose mass fibres pass through standard USA sieve with calibre No.10 (2-millimetre hole). Ground fibres of unbleached cotton lint are produced by preparation of loose mass from unbleached cotton lint of the first cut, second cut, third cut, or unbleached cotton lint, or their mixtures. Then loose mass of unbleached cotton lint is ground down to size, when at least 50% pass through standard USA sieve of calibre No. 10 (2-millimetre hole). Produced ground fibres of unbleached cotton lint in the form of loose mass are used to produce ether derivatives of cellulose.

EFFECT: method makes it possible to reduce energy inputs in production of ether derivative at the stage of cellulose mixture activation reaction with at least one etherifying agent down to at least 15%.

3 cl, 34 ex, 4 tbl