MULTILAYER DISSOLVABLE SOLID ARCTICLE FOR LAUNDRY CARE AND FOR HAIR CARE WITH SPECIFIC ASPECT RATIO Russian patent published in 2022 - IPC C11D17/06 C11D3/37 C11D1/00 C11D3/00 C11D1/83 A61Q5/00 

FIELD: chemistry.

SUBSTANCE: invention relates to improved dissolvable solid product for laundry care and for hair care with a set aspect ratio. Described is dissolvable solid product for laundry care and for hair care, containing 6 to 50 flexible dissolvable porous sheets, wherein each of the sheets comprises a water-dissolvable polymer constituting polyvinyl alcohol and a surface-active agent constituting a linear alkyl benzosulphonate, characterised by a 80% to 100% percentage of open cells and a total average pore size from 100 to 2,000 mcm, wherein said dissolvable solid product is characterised by a maximum size D and a minimum size z; wherein the D:z ratio is in the range from 1 to 10 and each of said sheets constitutes a solid sheet containing a top section adjacent to the top surface, a bottom section adjacent to the bottom surface, and a middle section located between said sections, and the relative standard deviation between the average pore size in the top, middle and bottom sections is 20% or less.

EFFECT: creation of a multilayer dissolvable solid product with an improved aspect ratio and/or shape, which is easier to manage and more aesthetically attractive to consumers, while being easily dissolvable in water.

12 cl, 8 dwg, 11 tbl, 2 ex