US 11,674,112 B1
Double layer detergent tablet and preparation method thereof
Jianfeng Sun, Guangdong (CN); Fenglei Li, Guangdong (CN); Jianjia Zhong, Guangdong (CN); Yan Li, Guangdong (CN); Dongqian Wu, Guangdong (CN); and Min Sun, Guangdong (CN)
Assigned to Guangzhou Joyson Cleaning Products Co., Ltd., Guangdong (CN)
Filed by Guangzhou Joyson Cleaning Products Co., Ltd., Guangdong (CN)
Filed on Dec. 30, 2022, as Appl. No. 18/91,669.
Int. Cl. C11D 17/00 (2006.01); C11D 17/04 (2006.01); C11D 3/37 (2006.01); C11D 3/20 (2006.01); C11D 1/831 (2006.01); C02F 5/12 (2023.01); C02F 5/10 (2023.01)
CPC C11D 3/3753 (2013.01) [C02F 5/10 (2013.01); C02F 5/12 (2013.01); C11D 1/831 (2013.01); C11D 3/2065 (2013.01); C11D 3/3746 (2013.01); C11D 17/0078 (2013.01)] 11 Claims
 
1. A double layer detergent tablet, comprising a color absorbing fiber and a solid detergent adhered to the color absorbing fiber, wherein the solid detergent comprises the following components by mass percentage: 8-30% of polyvinyl alcohol, 10-40% of surfactant, 0.5-5% of polyvinylpyrrolidone, 1-5% of glycerin, 0.5-5% of water softener, 0.1-1% of plant essence, and 14-79.9% of deionized water; and
wherein the surfactant is a mixture of an anionic surfactant and a non-ionic surfactant; the anionic surfactant is a mixture of sodium coco-sulfate and sodium alpha-olefin sulfonate; the non-ionic surfactant is a mixture of alkyl glycoside, fatty alcohol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and fatty acid methyl ester ethoxy compound; and wherein the water softener is a mixture of sodium citrate, citric acid and tetrasodium glutamate diacetate.