Process for modifying fibrous products containing cellulosic fibers
AssigneeDaido-Maruta Finishing Co., Ltd.
InventorKazuhide Yamamoto
Life of this patent
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Abstract
A process for modifying a fibrous product containing cellulosic fibers which comprises treating said fibrous product with a solution or dispersion containing a particular acrylic copolymer having a glycidyl group and an alkylene oxide sidechain, drying the fibrous product; and heat-treating it in the presence of an acid catalyst at a temperature sufficient to cleave the oxirane linkage of the glycidyl group. This process can impart superior dry and wet crease resistances, shrinkage resistance and wash and wear properties and also soil removing ability, resistance to redeposition, water absorption and water penetrability to fibrous products containing cellulosic fibers while retaining their mechanical strength characterics.
Claims42
A process for modifying a fibrous product containing cellulosic fibers which comprises treating said fibrous product with a solution or dispersion containing a glycidyl-containing copolymer consisting essentially of
- (a) 1 to 55 mole% of at least one structural unit of the formula ##STR13## wherein R.sub.1 represents a hydrogen atom or a methyl group, and Q is CO or CH.sub.2,
- (b) 0.5 to 25 mole% of at least one structural unit of the formula ##STR14## wherein R.sub.2 represents a hydrogen atom or a methyl group, R.sub.3 represents an alkylene group, R.sub.4 represents a hydrogen atom, an alkyl group, an acryloyl group or a methacryloyl group, and m is an integer of at least 1, and
- (c) 98.5 to 20 mole% of at least one structural unit of the formula ##STR15## wherein R.sub.5 represents a hydrogen atom or a methyl group, and R.sub.6 represents an alkyl or hydroxyalkyl group;
- drying the fibrous product;
- and heat-treating it in the presence of an acid catalyst at a temperature sufficient to cleave the oxirane linkage of the glycidyl group.
Dependencies are inferred from the claim text.