COMPOSITE RUBBER MIXTURE FOR ACOUSTIC COATINGS Russian patent published in 2019 - IPC C08L9/00 C08L9/02 C08K3/04 C08K3/06 C08K3/22 C08K5/03 C08K5/09 C08K5/10 C08K5/18 C08K5/44 C08K7/18 

FIELD: chemistry.

SUBSTANCE: invention relates to rubber industry and can be used in production of sound-absorbing coatings, in particular, for shipbuilding. Composite rubber mixture for acoustic coatings contains, wt. p.: butadiene-nitrile rubber with weight ratio of bound nitrile of acrylic acid NAA ranging from 27 to 30 % – 70.0–80.0; polyisoprene rubber SKI-3 – 20.0–30.0; sulfur 2.5–3.0; N-cyclohexyl-2-benzothiazolylsulfenamide – 1.5–2.0; dibenzothiazolyl disulphide – 0.5–0.8; zinc oxide – 3.0; stearic acid 1.0; phenyl-2-naphthylamine – 1.0; acetonanyl H – 1.0; technical carbon P 803 – 20.0–25.0; technical carbon N 220 – 45.0–50.0; corundum microspheres HCM-L – 3.0–5.0; transprolinorbornene – 10.0–25.0; industrial oil I-12A – 10.0–25.0; N-nitrosodiphenylamine – 1.0; sevylene – 5.0–6.0; an ether-type plasticizer of dibutyl phthalate – 0.0–15.0; hepsol ChPK – 0–1.0.

EFFECT: invention improves processing properties and hydroacoustic properties.

1 cl, 2 tbl