Textile size
AssigneeAmerican Maize-Products Company
InventorsEdward D. DeBoer, Kenneth R. Yahl
Life of this patent
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Abstract
A novel starch used in a size composition is disclosed. The novel starch is a quaternary ammonium ether and acyl ester of starch which has a DS of quaternary ammonium ether of between 0.02 to 0.2 and a DS of acyl ester of between 0.01 to 0.3. The size composition is made from the novel starch and polyvinyl alcohol in a ratio of starch: polyvinyl alcohol of between 1:9 to 10:0. The method of making the size composition and the method of applying the size composition to the yarn is disclosed.
Claims19
A cationic-nonionic starch derivative having the following structural formula:
- ##STR8## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.5 are selected from the group consisting of alkyl, alkylene, aryl and aralkyl;
- R.sub.4 is selected from the group consisting of alkyl, hydroxyalkyl, alkylene and hydroxyalkylene and R.sub.4 has at least 3 but not more than 5 carbons;
- X is a halide.
The starch derivative of claim of 7 wherein the DS of quaternary ammonium ether groups is about 0.03 to about 0.07 and the DS of acyl ester groups is about 0.03 to about 0.1.
A cationic-nonionic starch derivative having the following structural formula:
- ##STR9## wherein R.sub.1, R.sub.2 and R.sub.3 are selected from the group consisting of ethyl and methyl;
- R.sub.4 is selected from the group consisting of propyl and hydroxypropyl;
- R.sub.5 is a propyl group;
- X is selected from the group consisting of bromide and chloride;
- and wherein the starch derivative has a DS of quaternary ammonium ether is about 0.03 to about 0.07 and a DS of acyl ester of about 0.03 to about 0.01.
Dependencies are inferred from the claim text.