	US 12,269,194 B2
	Rubber formulation
Christopher Michael Twigg, Nederweert (NL); Wim Migchels, Nederweert (NL); Jeroen Claessens, Nederweert (NL); Robert Jan Zootjes, Nederweert (NL); and Jan Gijsbertus Driessen, Nederweert (NL)
Assigned to Atlantis Rubber Powders B.V., Sitttard (NL)
Appl. No. 17/797,525
Filed by Atlantis Rubber Powders B.V., Sittard (NL)
PCT Filed Feb. 18, 2021, PCT No. PCT/NL2021/050110 § 371(c)(1), (2) Date Aug. 4, 2022, PCT Pub. No. WO2021/167457, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 2024936 (NL), filed on Feb. 18, 2020.
Prior Publication US 2023/0083416 A1, Mar. 16, 2023
Int. Cl. B29B 17/04 (2006.01); B02C 18/14 (2006.01); B02C 19/18 (2006.01); B29B 17/02 (2006.01); C08F 36/08 (2006.01); C08J 3/12 (2006.01); C08J 3/22 (2006.01); C08K 3/36 (2006.01); C08K 9/06 (2006.01); B29K 105/00 (2006.01); B29L 30/00 (2006.01)

CPC B29B 17/0408 (2013.01) [B02C 18/148 (2013.01); B02C 19/186 (2013.01); B29B 17/02 (2013.01); B29B 17/0412 (2013.01); C08F 36/08 (2013.01); C08J 3/124 (2013.01); C08J 3/226 (2013.01); C08K 3/36 (2013.01); C08K 9/06 (2013.01); B29B 2017/0203 (2013.01); B29B 2017/0224 (2013.01); B29B 2017/0416 (2013.01); B29B 2017/042 (2013.01); B29K 2105/251 (2013.01); B29L 2030/00 (2013.01); C08J 2307/02 (2013.01); C08K 2201/006 (2013.01); Y02W 30/62 (2015.05); Y10S 241/31 (2013.01); Y10S 241/37 (2013.01)]

15 Claims

1. A method for manufacturing micronized rubber powders comprising

grinding a rubber granulated feedstock to obtain micronized rubber powders, classifying the micronized rubber powders by size, and storing the micronized rubber powders

wherein during the grinding process an agent is used to prevent particles of the micronized rubber powders from sticking to themselves,

wherein the agent is chosen from the group of synthetic amorphous precipitated silica and silane-treated synthetic amorphous precipitated silica, or a combination thereof wherein the grinding process of the rubber granulated feedstock comprises a two-step grinding process including ambient grinding followed by cryogenic grinding, and wherein the particle size of the rubber granulated feedstock after the ambient grinding is 0.1-0.8 mm.