Sustainable Graft Polymers and Methods for Making and Recycling

    公开(公告)号:US20230340174A1

    公开(公告)日:2023-10-26

    申请号:US18154957

    申请日:2023-01-16

    IPC分类号: C08F257/02

    CPC分类号: C08F257/02

    摘要: A macromonomer capable of forming a graft polymer through graft-through polymerization, the macromonomer including a plurality of monomer units including a cycloalkene having a fused ring attached thereto to form a cycloalkene-fused ring monomer where the fused ring decreases the ring strain energy of the cycloalkene to a lower ring strain energy state of 5.3 kcal/mol or lower and where the cycloalkene of the cycloalkene-fused ring monomer is capable of isomerization into a higher ring strain energy state before graft-through polymerization, and at least one polymer sidechain is bonded to the fused ring. Graft polymers formed by the macromonomer include graft polymers and graft copolymers including statistical and block copolymers. The graft (co)polymers are capable of depolymerization under mild conditions into reusable monomer units.

    Catalytic cracking process for increasing simultaneously the yields of diesel oil and liquefied gas
    3.
    发明授权
    Catalytic cracking process for increasing simultaneously the yields of diesel oil and liquefied gas 有权
    催化裂化过程同时提高柴油和液化气的产率

    公开(公告)号:US06416656B1

    公开(公告)日:2002-07-09

    申请号:US09602568

    申请日:2000-06-22

    IPC分类号: C10G1100

    CPC分类号: C10G11/18

    摘要: This discloses a process for catalytically cracking hydrocarbon stocks in a riser or fluidized bed reactor simultaneously to increase yields of diesel and liquefied gas. The process includes the steps of: first, charging a gasoline stock and a catalytic cracking catalyst into a lower zone of the reactor to permit contact between the catalyst and the gasoline stock and to produce a liquefied gas-rich oil-gas mixture containing reacted catalyst. The resulting liquefied gas-rich oil-gas mixture (still containing reacted catalyst) is then introduced into a reaction zone above the lower zone of the reactor. Simultaneously, at least one conventional catalytic cracking hydrocarbon feed is also fed independently into at least two sites is situated at a different height above the lower zone of the reactor. The resulting mixture is then separated in a conventional fashion.

    摘要翻译: 这公开了一种在提升管或流化床反应器中同时催化裂化烃原料以提高柴油和液化气的产率的方法。 该方法包括以下步骤:首先,将汽油原料和催化裂化催化剂装入反应器的下部区域,以允许催化剂和汽油原料之间的接触,并产生含有反应催化剂的液化气体富含油气混合物 。 然后将所得到的液化气体富含油气混合物(仍含有反应催化剂)引入到反应器下部区域上方的反应区。 同时,至少一种常规的催化裂化烃进料也独立地进料到至少两个位置,位于反应器下部区域上方的不同高度处。 然后将所得混合物以常规方式分离。