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US 4,362,527 AGranted
Radiation-resistant fluoroaromatic cellulosic ethers
AssigneeThe United States of America as represented by the Secretary of Agriculture
InventorRobert J. Harper, Jr.
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Abstract
A process for improving the radiation resistance of cellulosic fabrics is disclosed. Fabric is immersed first in a 23% caustic solution for 15 minutes and then in a 5% caustic solution for 15 minutes. The excess caustic is removed and the fabric padded to 105% wet-pickup using neutralized pentafluorobenzoic acid. The fabric is then cured at 130.degree.-140.degree. C. for 6-8 minutes.
Claims9
A process to improve the radiation resistance of cellulose fabrics comprising:
- (a) immersing a fabric in a caustic solution;
- (b) removing the excess solution from the fabric;
- (c) padding said fabric using a neutralized aqueous bath of pentafluorobenzoic acid;
- (d) curing said fabric.
1 more element
Dependencies are inferred from the claim text.