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    • 2. 发明授权
    • Reducing undesired polymerization in the basic wash unit of hydrocarbon cracking process
    • 在烃裂解过程中减少不希望的聚合
    • US06372121B1
    • 2002-04-16
    • US09703108
    • 2000-10-31
    • Robert D. McClainNatu R. PatelRaymond M. Glath
    • Robert D. McClainNatu R. PatelRaymond M. Glath
    • C10G916
    • C10G75/04C10G9/00C10G19/02C10G70/06Y02P30/464Y10S585/95
    • This invention is a method to inhibit the polymerization of carbonyl compounds in a basic wash unit operation in a hydrocarbon cracking process, wherein a compound selected from the group consisting of alpha-amino acids and esters thereof and amides thereof and salts thereof and mixtures thereof or Mercaptoacetic acid and alkyl esters thereof, is added either to a stream comprising a carbonyl compound or to the basic wash unit operation; wherein the compound is selected such that it remains water-soluble and base-soluble and does not flocculate in the stream or in the basic wash unit operation; and wherein the stream is contacted with the compound either before or at the same time as the stream enters the basic wash unit operation; or wherein the compound is added to the basic wash unit operation before or while the stream enters the basic wash unit operation.
    • 本发明是在烃裂解方法中碱性洗涤单元操作中抑制羰基化合物的聚合的方法,其中选自α-氨基酸及其酯及其酰胺及其盐及其混合物的化合物或 将巯基乙酸及其烷基酯加入到包含羰基化合物的流或基本洗涤单元操作中;其中选择该化合物使其保持水溶性和碱溶性,并且不会在流中或 基本洗衣机操作; 并且其中所述物流在所述物流进入所述基本洗涤单元操作之前或同时与所述化合物接触; 或其中在流进入基本洗涤单元操作之前或期间将化合物加入基本洗涤单元操作中。
    • 7. 发明授权
    • Isothioureido isoindolediones and use as plant growth regulators
    • 异硫脲酸异吲哚啉并用作植物生长调节剂
    • US4292071A
    • 1981-09-29
    • US133888
    • 1980-04-10
    • Joel L. KirkpatrickNatu R. PatelJerry L. Rutter
    • Joel L. KirkpatrickNatu R. PatelJerry L. Rutter
    • A01N47/42C07D209/48C07D317/66A01N43/38
    • C07D209/48A01N47/42C07D317/66
    • A novel class of compounds which are useful as plant growth regulators is disclosed, having the general structural formula: ##STR1## In which R is cyano C.sub.1 to C.sub.5 alkyl, alkenyl or alkynyl to which may be attached phenyl, halophenyl, methylphenyl, pyridyl, benzoyl, trimethylacetyl, phenoxy, halophenoxy, halobenzoyl, N-phenylcarbamyl, N-alkylcarbamyl, N-trifluoromethylthiadiazolylcarbamyl, carboxy, carbalkoxy or halo substituents,R.sup.1 is H, acetyl C.sub.1 to C.sub.3 alkyl, alkenyl or alkynyl to which may be attached phenyl, halophenyl, carbethoxy, vinyloxy or phenoxy groups, or R and R.sup.1 together may be C.sub.2 to C.sub.4 alkylene,Ar is phenyl or benzoyl,R.sup.2 is C.sub.1 to C.sub.4 alkyl, alkoxy, alkylene, alkylamino or alkylthio; phenoxy, benzyloxy, carbalkoxy, acetyl, methylenedioxy, trifluoromethyl, nitro, halo or cyano and n may be zero or an integer from 1 to 4, with the provision that at least one position ortho to the point of attachment of a phenyl ring of the Ar structure must be unsubstituted,R.sup.3 is lower alkyl or halo and n' may be zero or an integer from 1 to 4.
    • 公开了一类可用作植物生长调节剂的化合物,其具有以下通式:其中R为氰基C1至C5烷基,可以连接苯基,卤代苯基,甲基苯基,吡啶基, 苯甲酰基,三甲基乙酰基,苯氧基,卤代苯氧基,卤代苯甲酰基,N-苯基氨基甲酰基,N-烷基氨基甲酰基,N-三氟甲基噻二唑基氨基甲酰基,羧基,烷氧基或卤素取代基,R1是H,乙酰基C1-C3烷基,可以连接苯基,卤代苯基 ,乙氧基,乙烯基氧基或苯氧基,或R和R 1可以是C 2至C 4亚烷基,Ar是苯基或苯甲酰基,R 2是C 1至C 4烷基,烷氧基,亚烷基,烷基氨基或烷硫基; 苯氧基,苄氧基,烷氧基,乙酰基,亚甲基二氧基,三氟甲基,硝基,卤素或氰基,n可以为0或1至4的整数,条件是至少一个邻位的位置 Ar结构必须是未取代的,R3是低级烷基或卤素,n'可以是0或1-4的整数。
    • 9. 发明授权
    • Caustic tower trap for acetaldehyde
    • 用于乙醛的苛性塔陷阱
    • US5714055A
    • 1998-02-03
    • US695448
    • 1996-08-12
    • Vincent E. LewisNatu R. Patel
    • Vincent E. LewisNatu R. Patel
    • C07C7/148C07C7/11C07C7/20C07C11/02C07C11/04C10G19/02C10G70/06C10G75/04C10G9/12
    • C10G75/04C07C7/11C07C7/20C10G19/02C10G70/06Y10S585/95
    • A method of inhibiting the formation of fouling deposits occurring on the surfaces of an alkaline scrubber used to wash acid gases generated during the manufacture of olefins, which deposits are formed during the scrubbing of pyrolytically produced hydrocarbons contaminated with oxygen-containing compounds with a caustic solution having a pH>7, which comprises adding an effective depositing-inhibiting amount of a caustic solution-soluble substituted aromatic amine selected from the group consisting of: 2-aminophenol, 4-aminophenol, 4-aminobenzenesulfonic acid and salts thereof, 4-amino-o-cresol, 3-aminophenol, 2-aminobenzoic acid and salts thereof, 3-aminobenzoic acid and salts thereof, and 4-aminobenzoic acid and salts thereof to the caustic solution. A preferred substituted aromatic amine is the sodium salt of 4-amino- benzenesulfonic acid in aqueous solution.
    • 一种抑制在用于洗涤烯烃制造过程中产生的酸性气体的碱性洗涤器的表面上发生的污垢沉积物的形成的方法,该沉积是在用含氢化合物被苛性碱溶液污染的热解产生的烃的过程中形成的 其pH> 7,其包括添加选自以下的有效沉积抑制量的苛性碱溶液取代的芳族胺:2-氨基苯酚,4-氨基苯酚,4-氨基苯磺酸及其盐,4-氨基 - 对甲酚,3-氨基苯酚,2-氨基苯甲酸及其盐,3-氨基苯甲酸及其盐,以及4-氨基苯甲酸及其盐与苛性碱溶液。 优选的取代芳族胺是4-氨基苯磺酸在水溶液中的钠盐。