Bleaching and dyeing; fluid treatment and chemical modification – Chemical modification of textiles or fibers or products thereof – Cellulose fibers
Patent
1987-04-08
1989-02-14
Lusignan, Michael
Bleaching and dyeing; fluid treatment and chemical modification
Chemical modification of textiles or fibers or products thereof
Cellulose fibers
427212, 427440, D06M 114, D06M 1320, B05D 118, B05D 700
Patent
active
048043842
ABSTRACT:
Reaction of lignocellulosic material with uncatalyzed acetic anhydride in the absence of any cosolvent is disclosed. The process improves dimensional stability and resistance to biological attack of the lignocellulosic material. Lignocellulosic material is treated by exposure to liquid acetic anhydride for at least a short period of time, after which it is then heated to acetylate the material. The excess anhydride and byproduct acetic acid can be removed by vacuum.
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Rowell Roger M.
Simonson Rune
Tillman Anne-Marie
Fado John D.
Lusignan Michael
McConnell David G.
Silverstein M. Howard
The United States of America as represented by the Secretary of
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