FIELD: chemistry.
SUBSTANCE: present invention relates to a mixture of polyols for the production of polyurethane plastic foams. This mixture of polyols has following properties: hydroxyl number is from 35 to 500 mg KOH/g; amine number is from 1 to 40 mg KOH/g; acid number is from 0.1 to 20 mg KOH/g; viscosity is from 800 to 50,000 MPa*s. The mixture of polyols is a mixture of recycled polyols, at least two compounds and five or more different pigments. The mixture of recycled polyols is obtained by recycling polyurethane waste. Compounds are selected from: calcium carbonate, styrene-acrylonitrile copolymer (SAN), poly-isocyanate polyaddition (PIPA), polyol based on the dispersion of polyurea (PHD) and melamine.
EFFECT: development of a universal and easily accessible recycled polyol without the need to subject processed materials to significant pre-sorting.
9 cl, 3 ex
