LAUNDRY DETERGENTS AND CLEANSING COMPOSITIONS CONTAINING POLYMERS WITH CARBOXYL GROUPS Russian patent published in 2017 - IPC C11D3/37 C11D3/16 C11D3/395 C11D3/386 

FIELD: chemistry.

SUBSTANCE: laundry detergent or cleansing composition are described, containing a polymer with a carboxyl group which comprises: (i) a structural unit (a) which is derived from a monomer (A) based on the acrylic acid in an amount from about 60% to about 70% by mass, on the assumption of 100% by mass of all structural units which are derived from all monomers in the polymer with a carboxyl group. The structural unit (a) is represented by the formula (2): where R¹ is a hydrogen atom, a metal atom, an ammonium group or an organic amine group; and (ii) a structural unit (b) which is derived from the monomer (B) containing a sulfonic acid group in an amount from about 30% to about 40% by mass, on the assumption of 100% by mass of all structural units which are derived from all monomers in the polymer with a carboxyl group. The structural unit (b) is represented by the formula (4): where R² is a hydrogen atom or a methyl group; R³ is a CH₂ group, a CH₂CH₂ group or a direct relation; R⁴ and R⁵independently represent a hydroxyl group or-SO₃Z; where Z is a hydrogen atom, a metal atom, an ammonium group or an organic amine group; and where at least one of R⁴ and R⁵ represents-SO₃Z A polymer with a carboxyl group has a weight-average molecular weight from about 23,000 to about 50,000. The present invention also covers methods for production and methods for application of the cleansing composition.

EFFECT: improved whiteness or prevention of the dirt redeposition.

33 cl, 1 dwg, 10 tbl, 5 ex