Method of imparting soil release properties to fabrics专利检索-土壤特性土壤学土壤学土壤科学专利检索查询-专利查询网

Method of imparting soil release properties to fabrics

阅读：749发布：2022-07-07

专利汇可以提供Method of imparting soil release properties to fabrics专利检索，专利查询，专利分析的服务。并且A method for treating materials to facilitate removal of soil therefrom is disclosed, involving contacting the soiled material with a nitrogen-bearing starch adduct having a pKa value from about 3 to 8. Novel compositions which impart soil release properties to materials without causing soil redeposition from the wash liquor are also taught, comprising the said starch adducts.，下面是Method of imparting soil release properties to fabrics专利的具体信息内容。

权利要求

2. The method of claim 1 wherein the cationic starch comprises a compound having the general structural formula: in which R1 is an alkylene or hydroxyalkylene from one to six carbon atoms, alkenylene of two to six carbons; alkyleneoxy of two to four carbon atoms; or polyalkyleneoxy of 2 to 4 carbons per monomer unit, and from 2 to 20 units per R1 substituent; and R2 and R3 taken individually, are one of: a. alkyl straight or branched, hydroxyalkyl straight or branched, thioalkyl straight or branched, alkoxy-alkyl straight or branched, all the foregoing from one to six carbons; or alkenyl of 2 to 6 carbons; or b. cycloalkyl from three to six carbons; aryl to ten carbon atoms; arylalkyl from 7 to 10 carbons; or alkyl-aryl to 10 carbons; or c. R1 and R2, or R2 and R3, taken collectively with the nitrogen atom, to form a saturated or unsaturated five or six membered heterocyclic ring; and d. at least one of the R groups contains either an electron withdrawing group attached to the carbon atom beta to the nitrogen, or a group that sterically hinders protonation of the nitrogen atom.

3. The method of claim 1 wherein the cationic starch comprises a compound having the general structural formula: wherein R1 is an alkylene or hydroxyalkylene of one to six carbon atoms; alkenylene of two to six carbons; alkyleneoxy of two to four carbon atoms; or polyalkyleneoxy of 2 to 4 carbons per monomer unit, and from 2 to 20 units per R1 substituent; and R2 and R3 taken individually, are one of: a. alkyl, straight or branched, hydroxyalkyl straight or branched, thioalkyl straight or branched, or alkoxyalkyl, all the foregoing of one to six carbons; or b. cycloalkyl from three to six carbons; aryl from six to ten carbons; arylalkyl from seven to ten carbons; or alkylaryl from seven to ten carbons; or c. R1 and R2, or R2 and R3, taken collectively, with the nitrogen atom, forms a saturated or unsaturated five or six-membered heterocyclic ring.

4. A method according to claim 1 wherein the starch is morpholinoethyl adduct of oxidized starch.

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Method of imparting soil release properties to fabrics

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