Reactive compounds containing perfluorovinyl groups
    43.
    发明授权
    Reactive compounds containing perfluorovinyl groups 失效
    含全氟乙烯基的活性化合物

    公开(公告)号:US5198513A

    公开(公告)日:1993-03-30

    申请号:US668294

    申请日:1991-03-12

    摘要: A compound having at least one perfluorovinyl group and at least one functional group is suitable for reacting with and/or forming polymers. The compound is preferably of Formula I:(G)n-R-(X--CF.dbd.CF.sub.2).sub.mwherein R represents an optionally substituted hydrocarbyl group, X represents any group which links R and a perfluorovinyl group; n is the number of G groups, m is the number of (XCF.dbd.CF.sub.2) groups; and G represents any reactive functional group or a group convertible into a reactive functional groups.A process for preparing a compound of Formula I comprises the steps of:(a) preparing a 2-halotetrafluoro compound of the Formula III:(Q--CF.sub.2 --CF.sub.2 -X).sub.m -R-(G").sub.n wherein R, X, m and n are as described for Formula I and Q is bromine, chlorine or iodine; and G" is a functional group, or a functional group suitable for conversion into G;(b) chemically modifying group G" to produce functional group G; and(c) dehalogenating the 2-halotetrafluoro compound to form the corresponding trifluorovinyl compound.

    摘要翻译: 具有至少一个全氟乙烯基和至少一个官能团的化合物适于与聚合物反应和/或形成聚合物。 化合物优选为式I:(G)n-R-(X-CF = CF 2)m,其中R表示任选取代的烃基,X表示连接R和全氟乙烯基的任何基团; n是G基团的数目,m是(XCF = CF 2)基团的数目; G表示任何反应性官能团或可转化为反应性官能团的基团。 制备式I化合物的方法包括以下步骤:(a)制备式III的2-卤代四氟化合物:(Q-CF2-CF2-X)mR-(G“)n,其中R,X, m和n如式I所述,Q是溴,氯或碘; G“是官能团,或适合转化为G的官能团; (b)化学修饰基团G“以产生官能团G; 和(c)使2-卤代四氟化合物脱卤以形成相应的三氟乙烯基化合物。

    Perfluorovinyl compounds
    44.
    发明授权
    Perfluorovinyl compounds 失效
    全氟乙烯基化合物

    公开(公告)号:US5162468A

    公开(公告)日:1992-11-10

    申请号:US668296

    申请日:1991-03-12

    摘要: Compounds have a structure represented by Formula I:CF.sub.2 .dbd.CF--X--R--(X--CF.dbd.CF.sub.2).sub.mwherein R represents an unsubstituted or inertly substituted hydrocarbyl group; each X is independently selected from the group consisting of groups having at least one non-carbon atom between R and --CF.dbd.CF.sub.2 ; and m is an integer of from 1 to about 3. Polymers formed from such compounds are also prepared. The compounds are preferably prepared by a method by a process comprising the steps of:(a) forming a salt having anion corresponding to a compound of Formula II:HX--R--(XH.sub.m); wherein X, R and m are as defined for Formula I:(b) reacting the salt with a 1,2-dihalo-1,1,2,2-tetrafluoroethane wherein the halo groups are iodine, bromine, chlorine or mixtures thereof, at least one halo group being bromine or iodine, to form a compound of Formula III:Z--CF.sub.2 CF.sub.2 --X--R--(X--CF.sub.2 CF.sub.2 --Z).sub.m wherein X, R and m are as defined for Formula I and each Z is independently iodine or bromine;(c) eliminating the halogen atoms represented by Z to form the perfluorovinyl compound represented by Formula I.

    摘要翻译: 化合物具有由式I表示的结构:CF 2 = CF-X-R-(X-CF = CF 2)m其中R表示未取代或惰性取代的烃基; 每个X独立地选自具有至少一个R和-CF = CF 2之间的非碳原子的基团; 并且m为1至约3的整数。还制备由这些化合物形成的聚合物。 化合物优选通过包括以下步骤的方法的方法制备:(a)形成具有对应于式II化合物的阴离子的盐:HX-R-(XHm); 其中X,R和m如式I所定义:(b)盐与1,2-二卤代-1,1,2,2-四氟乙烷反应,其中卤素是碘,溴,氯或其混合物, 至少一个卤素基团是溴或碘,以形成式III的化合物:Z-CF 2 CF 2 -XR-(X-CF 2 CF 2 -Z)m其中X,R和m如式I所定义,各Z独立地为碘 或溴; (c)除去由Z表示的卤素原子,形成由式I表示的全氟乙烯基化合物。

    Isocyanate trimerisation catalyst system, a precursor formulation, a process for trimerising isocyanates, rigid polyisocyanurate/polyurethane foams made therefrom, and a process for making such foams

    公开(公告)号:US10294322B2

    公开(公告)日:2019-05-21

    申请号:US15621171

    申请日:2017-06-13

    摘要: The instant invention provides an isocyanate trimerization catalyst system, a precursor formulation, a process for trimerizing isocyanates, rigid foams made therefrom, and a process for making such foams. The trimerization catalyst system comprises: (a) a phosphatrane cation; and (b) an isocyanate-trimer inducing anion; wherein said trimerization catalyst system has a trimerization activation temperature in the range of equal to or less than 73° C. The precursor formulation comprises (1) at least 25 percent by weight of polyol, based on the weight of the precursor formulation; (2) less than 15 percent by weight of a trimerization catalyst system, based on the weight of the precursor formulation, comprising; (a) a phosphatrane cation; and (c) an isocyanate-trimer inducing anion; wherein said trimerization catalyst system has a trimerization activation temperature in the range of equal to or less than 73° C.; and (4) optionally one or more surfactants, one or more flame retardants, water, one or more antioxidants, one or more auxiliary blowing agents, one or more urethane catalysts, one or more auxiliary trimerization catalysts, or combinations thereof. The process for trimerization of isocyanates comprises the steps of: (1) providing one or more monomers selected from the group consisting of an isocyanate, a diisocyanate, a triisocyanate, oligomeric isocyanate, a salt of any thereof, and a mixture of any thereof; (2) providing a trimerization catalyst system comprising; (a) an phosphatrane cation; and (b) an isocyanate-trimer inducing anion; (c) wherein said trimerization catalyst system has a trimerization activation temperature in the range of equal to or less than 73° C.; (3) trimerizing said one or more monomers in the presence of said trimerization catalyst; (4) thereby forming an isocyanurate ring. The process for making the PIR foam comprises the steps of: (1) providing one or more monomers selected from the group consisting of an isocyanate, a diisocyanate, a triisocyanate, oligomeric isocyanate, a salt of any thereof, and a mixture of any thereof; (2) providing polyol; (3) providing a trimerization catalyst system comprising; (a) a phosphatrane cation; and (b) an isocyanate-trimer inducing anion; wherein said trimerization catalyst system has a trimerization activation temperature in the range of equal to or less than 73° C.; and (4) optionally providing one or more surfactants, one or more flame retardants, water, one or more antioxidants, one or more auxiliary blowing agents, one or more urethane catalysts, one or more auxiliary trimerization catalysts, or combinations thereof; (5) contacting said one or more monomers, and said polyol, and optionally said one or more surfactants, and optionally said one or more flame retardants, and optionally said water, and optionally said one or more antioxidants, and optionally said one or more auxiliary blowing agents in the presence of said trimerization catalyst system and optionally said one or more urethane catalysts, and optionally said one or more auxiliary trimerization catalysts; (6) thereby forming said polyisocyanurate/polyurethane rigid foam. The PIR foam comprises the reaction product of one or more monomers selected from the group consisting of an isocyanate, a diisocyanate, a triisocyanate, oligomeric isocyanate, a salt of any thereof, and a mixture of any thereof with polyol in the presence of a trimerization catalyst system comprising a phosphatrane cation, and an isocyanate-trimer inducing anion, and optionally one or more surfactants, optionally one or more flame retardants, optionally water, optionally one or more antioxidants, optionally one or more auxiliary blowing agents, optionally one or more additional urethane catalysts, and optionally one or more auxiliary trimerization catalysts, or optionally combinations thereof, wherein the trimerization catalyst system has a trimerization activation temperature in the range of equal to or less than 73° C.The PIR foam comprises the reaction product of one or more monomers selected from the group consisting of an isocyanate, a diisocyanate, a triisocyanate, oligomeric isocyanate, a salt of any thereof, and a mixture of any thereof with polyol in the presence of a trimerization catalyst system comprising a phosphatrane cation, and an isocyanate-trimer inducing anion, and optionally one or more surfactants, optionally one or more flame retardants, optionally water, optionally one or more antioxidants, optionally one or more auxiliary blowing agents, optionally one or more additional polyurethane catalysts, and optionally one or more auxiliary trimerization catalysts, or optionally combinations thereof, wherein the PIR foam has a polyisocyanurate trimer ratio (Abs1410/Abs1595) of at least 5 at a depth of 12 mm from the rising surface of the rigid foam, measured via ATR-FTIR spectroscopy.