US 12,168,215 B2
Evaporative emission device and adsorbent
Wolfgang Ruettinger, East Windsor, NJ (US); Steven Chin, Port Reading, NJ (US); Laif R. Alden, Feasterville, PA (US); Chen Chen, Shanghai (CN); and Akash Abraham, Brooklyn, NY (US)
Assigned to BASF Corporation, Florham Park, NJ (US)
Filed by BASF CORPORATION, Florham Park, NJ (US)
Filed on Aug. 30, 2023, as Appl. No. 18/240,006.
Application 18/240,006 is a division of application No. 16/727,989, filed on Dec. 27, 2019, granted, now 11,779,900.
Application 16/727,989 is a continuation of application No. PCT/IB2018/054777, filed on Jun. 27, 2018.
Claims priority of application No. PCT/CN2017/090492 (WO), filed on Jun. 28, 2017.
Prior Publication US 2023/0405550 A1, Dec. 21, 2023
Int. Cl. B01J 20/00 (2006.01); B01D 53/04 (2006.01); B01J 20/20 (2006.01); B01J 20/26 (2006.01); B01J 20/28 (2006.01); B01J 20/32 (2006.01); B60K 15/035 (2006.01); F02M 25/08 (2006.01)
CPC B01J 20/20 (2013.01) [B01D 53/0407 (2013.01); B01J 20/261 (2013.01); B01J 20/262 (2013.01); B01J 20/28028 (2013.01); B01J 20/2803 (2013.01); B01J 20/28045 (2013.01); B01J 20/28066 (2013.01); B01J 20/321 (2013.01); B01J 20/3212 (2013.01); B60K 15/03504 (2013.01); F02M 25/0854 (2013.01); F02M 25/089 (2013.01); B01D 2253/102 (2013.01); B01D 2253/25 (2013.01); B01D 2253/306 (2013.01); B01D 2253/3425 (2013.01); B01D 2257/702 (2013.01); B01D 2259/4516 (2013.01); B01D 2259/4566 (2013.01); B60K 2015/03514 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An air intake system configured for controlling evaporative emissions from a motor vehicle with a combustion engine, said system comprising:
an air intake duct, an air cleaner housing positioned to receive air from the air intake duct, and one or more clean air ducts in fluid communication with the air cleaner housing and the combustion engine for transporting air from an air filter chamber to the combustion engine;
wherein at least a portion of an inner surface of at least one of said air intake duct, said air cleaner housing and said clean air ducts comprises a hydrocarbon adsorbent coating, or is in contact with a substrate coated with said hydrocarbon adsorbent coating, such that the hydrocarbon adsorbent coating is in fluid contact with a pathway for entry of combustion air into said combustion engine of said motor vehicle,
wherein the hydrocarbon adsorbent coating comprises a particulate carbon and a binder that adheres particles of the particulate carbon to each other and to the substrate, wherein the binder comprises an organic polymer and is present in an amount from about 10% to about 50% by weight relative to the particulate carbon, wherein a thickness of the coating is less than or equal to 500 micrometers, and wherein the particulate carbon has a BET surface area of at least about 1400 m2/g, and
wherein the particulate carbon exhibits a second cycle n-butane adsorption capacity of at least about 9% n-butane by weight when tested according to a protocol for which the particulate carbon is initially equilibrated at room temperature and exposed to a flow of 100 ml/min of 5% n-butane in nitrogen for 20 minutes, purged with a flow of 100 ml/min nitrogen for 25 minutes, and again exposed to a flow of 100 ml/min of 5% n-butane in nitrogen for 20 minutes.