PROCESSES FOR PRODUCING Z-1,1,1,4,4,4-HEXAFLUOROBUT-2-ENE AND INTERMEDIATES FOR PRODUCING SAME

    公开(公告)号:US20220194882A1

    公开(公告)日:2022-06-23

    申请号:US17601515

    申请日:2020-04-03

    IPC分类号: C07C17/087 C07C17/269

    摘要: Processes for producing Z-1,1,1,4,4,4-hexafluorobut-2-ene and intermediates for producing same. A process for producing 2-chloro-1,1,1,4,4,4-hexafluorobutane comprises contacting 1,1,2,4,4-pentachlorobuta-1,3-diene with HF in the liquid phases. A process for producing E-1,1,1,4,4,4-hexafluorobut-2-ene comprises contacting 2-chloro-1,1,1,4,4,4-hexafluorobutane with base. A process for producing 2,3-dichloro-1,1,1,4,4,4-hexafluorobutane comprises contacting E-1,1,1,4,4,4-hexafluorobut-2-ene with a chlorine source. A process for producing 1,1,1,4,4,4-hexafluoro-2-butyne comprises contacting 2,3-dichloro-1,1,1,4,4,4-hexafluorobutane with a base. A process for producing Z-1,1,1,4,4,4-hexafluorobut-2-ene comprises contacting 1,1,1,4,4,4-hexafluoro-2-butyne with hydrogen and a catalyst.

    HEAT TRANSFER COMPOSITIONS COMPRISING R-1225YE(E), HFO-1234YF, R-32, R-125, AND CO2

    公开(公告)号:US20220162488A1

    公开(公告)日:2022-05-26

    申请号:US17434843

    申请日:2020-03-03

    IPC分类号: C09K5/04

    摘要: The present application relates to compositions comprising (E)-1,2,3,3,3-pentafluoro-1-propene (i.e., R-1225ye(E) or HFO-1225ye(E)), HFO-1234yf, R-32, and, one or more additional components selected from R-125 and CO2, that are useful in refrigeration, air conditioning, or heat pump systems. Methods of replacing R-22, R-407C, or R-404A in refrigeration, air conditioning, or heat pump systems are also provided.

    PROCESS FOR PRODUCING 1,1,1,4,4,4-HEXAFLUOROBUT-2-ENE

    公开(公告)号:US20220162141A1

    公开(公告)日:2022-05-26

    申请号:US17601498

    申请日:2020-04-03

    摘要: A process for producing E-1,1,1,4,4,4-hexafluorobut-2-ene comprises contacting 1,1,2,4,4-pentachlorobuta-1,3-diene with hydrogen fluoride in the vapor phase in the presence of a fluorination catalyst. A process for producing Z-1,1,1,4,4,4-hexafluorobut-2-ene further comprises contacting E-1,1,1,4,4,4-hexafluoro-2-butene with chlorine in the presence of a catalyst to produce 2,3-dichloro-1,1,1,4,4,4-hexafluorobutane, followed by reaction with base to produce 1,1,1,4,4,4-hexafluoro-2-butyne, and subsequently hydrogenating hexafluoro-2-butyne to produce Z-1,1,1,4,4,4-hexafluoro-2-butene.

    Substrate coated with non-stick coating resistant to abrasion and scratching

    公开(公告)号:US11339305B2

    公开(公告)日:2022-05-24

    申请号:US15888065

    申请日:2018-02-04

    摘要: A substrate coated with a non-stick fluoropolymer coating is provided, the coating having excellent abrasion and scratch resistance. The coating contains: i.) a continuous primer layer adhered to the substrate containing a polymer binder, a first fluoropolymer and first inorganic film hardner particles, ii.) a discontinuous midcoat layer containing aggregate particles adhered to the primer layer and distributed discontinuously across the surface of the primer layer so as to reveal exposed areas of the surface of the primer layer, wherein a portion of the aggregate particles are in clusters, and wherein the aggregate particles contain second fluoropolymer and second inorganic film hardner particles, and iii.) a topcoat layer containing a third fluoropolymer adhered to the midcoat layer and the exposed areas of the surface of the primer layer at points where there is no midcoat layer.