EVAPORATIVE FUEL VAPOR EMISSION CONTROL SYSTEMS

    公开(公告)号:US20180363594A1

    公开(公告)日:2018-12-20

    申请号:US16012637

    申请日:2018-06-19

    IPC分类号: F02M25/08 B01D53/04

    摘要: The present disclosure describes an evaporative emission control canister system that includes: one or more canisters comprising at least one vent-side particulate adsorbent volume comprising a particulate adsorbent having microscopic pores with a diameter of less than about 100 nm; macroscopic pores having a diameter of about 100-100,000 nm; and a ratio of a volume of the macroscopic pores to a volume of the microscopic pores that is greater than about 150%, and having a retentivity of about 1.0 g/dL or less. The system may further include a high butane working capacity adsorbent. The disclosure also describes a method for reducing emissions in an evaporative emission control system.

    NOVEL PROCESS FOR SEPARATING AND PURIFYING COMPONENTS IN TALL OIL FATTY ACIDS

    公开(公告)号:US20180312777A1

    公开(公告)日:2018-11-01

    申请号:US15963660

    申请日:2018-04-26

    发明人: Bing Wang

    IPC分类号: C11C1/02 C11C1/00

    摘要: The present disclosure provides an efficient process for separating components of tall oil fatty acids (TOFA) and for purifying TOFA from rosin. The process includes mixing TOFA with a novel solvent system containing urea to form urea clathrates, resulting in separation of saturated fatty acids from unsaturated ones and rosin from TOFA by utilizing proper urea to TOFA ratio.

    Modified hydrocarbon resins as fluid loss additives

    公开(公告)号:US10005947B2

    公开(公告)日:2018-06-26

    申请号:US14546310

    申请日:2014-11-18

    IPC分类号: C09K8/32 C09K8/502 E21B21/06

    CPC分类号: C09K8/32 C09K8/502 E21B21/068

    摘要: Methods for treating oil-based drilling fluids with a fluid loss additive that includes one or more hydrocarbon resins. An oil-based drilling fluid and a hydrocarbon resin can be combined to produce a treated oil-based drilling fluid. The hydrocarbon resin can include a polymerized product of a reaction mixture that can include a dicyclopentadiene; at least one member selected from the group consisting of: a dimer of an aliphatic cyclic diene having five carbon atoms, a dimer of an aliphatic non-cyclic diene having five carbon atoms, a monoolefin, a diolefin, or a polyene, each having more than five carbon atoms and no aromatic rings, a C5-olefin, a debutanized aromatic concentrate, and any mixture thereof; and at least one member selected from the group consisting of: a fatty acid-containing material, a rosin acid-containing material, and a mixture thereof.

    TALL OIL DERIVED GLYCIDYL ESTERS AND PROCESS OF MAKING THE SAME

    公开(公告)号:US20230357174A1

    公开(公告)日:2023-11-09

    申请号:US17906706

    申请日:2021-03-17

    IPC分类号: C07D301/30

    CPC分类号: C07D301/30

    摘要: Presently described are methods for preparing glycidyl esters. The methods described herein provide quantitative conversion of carboxylic acid substrates to halohydrin intermediates using a small excess of epihalogenhydrin and performing the ring-closing step at a temperature of up to 30° C. unexpectedly reduce the formation of side-products in the ring-closing step. The described methods are also applicable to rosin derivatives and fatty acid derivatives. Utilizing these glycidyl esters as raw material, glycidyl ester derivatives with improved purity can be made.