	US 12,281,214 B2
	Additive for rubber compounds and method for producing same
Mikhail Rudolfovich Predtechenskiy, Novosibirsk (RU); Alexandr Alexandrovich Khasin, Bat Yam (IL); Ruslan Vladimirovich Karpunin, Kol'tsovo (RU); Andrey Yurievich Skuratov, Novosibirsk (RU); Ilya Anatolyevich Filippov, Novosibirsk (RU); Angelina Nikolaevna Anufrieva, Novosibirsk (RU); and Vladimir Andreevich Kruch, Novosibirsk (RU)
Assigned to MCD Technologies S.a. r.l., Leudelange (LU)
Appl. No. 18/039,247
Filed by MCD Technologies S.a r.l., Leudelange (LU)
PCT Filed Feb. 21, 2022, PCT No. PCT/RU2022/050055 § 371(c)(1), (2) Date May 28, 2023, PCT Pub. No. WO2022/186728, PCT Pub. Date Sep. 9, 2022.
Claims priority of application No. 2021105732 (RU), filed on Mar. 5, 2021.
Prior Publication US 2024/0002631 A1, Jan. 4, 2024
Int. Cl. C08K 3/04 (2006.01); C08J 3/20 (2006.01)

CPC C08K 3/041 (2017.05) [C08J 3/203 (2013.01); C08J 2309/00 (2013.01); C08J 2315/00 (2013.01); C08K 2201/001 (2013.01)]

13 Claims

1. An additive to rubber compounds, the additive comprising:

1 to 20 wt % carbon nanotubes;

3 to 90 wt % high-viscosity organic rubber; and

8 to 95 wt % low-molecular-weight organic dispersion medium capable of dissolving the high-viscosity organic rubber (R)

and selected from the group consisting of (a) oil with flash point of more than 200° C. and kinematic viscosity of less than 1 St at 100° C., (b) a polar solvent with relative dielectric permittivity of more than 5 at 25° C., and (c) an ester or a mixture of more than one esters of aliphatic alcohols with acids selected from the group consisting of (1) phthalic acid, (2) terephthalic acid, (3) sebacic acid, (4) adipic acid, and (5) cyclohexanedicarboxylic acid, wherein at least some of the carbon nanotubes are bundled, and

wherein a thickness of at least a part of the carbon nanotube bundles is more than 300 nm.