公开(公告)号：US3670040A

公开(公告)日：1972-06-13

申请号：US3670040D

申请日：1970-05-01

Applicant: SUN OIL CO

Inventor： DAVIS RONALD I

IPC: C07C7/152 ,  C07C7/00

CPC classification number: C07C7/152 ,  C07C15/24

Abstract: Mixtures of C13 bicyclic aromatic hydrocarbons containing trimethylnaphthalenes are difficult to fractionate by conventional techniques such as distillation or crystallization. However, by contacting such mixtures with the dianhydride of 1,2,4,5-benzenetetracarboxylic acid, the dianhydride of 1,2,3,4benezenetetracarboxylic acid or the trianhydride of 1,2,3,4,5,6benzenehexacarboxylic acid, a solid complex of certain hydrocarbons and the polyanhydride is formed. Separation of the solid complex and its subsequent decomposition results in a complexate that is substantially richer in those trimethylnaphthalenes which are preferentially complexed. These trimethylnaphthalenes can be demethylated to dimethylnaphthalenes which have utility in the production of dyes.

Abstract translation: 含有三甲基萘的C 13双环芳烃的混合物难以通过常规技术如蒸馏或结晶分馏。 然而，通过使这样的混合物与1,2,4,5-苯四甲酸的二酐接触，可以使用1,2,3,4-五烷四羧酸的二酐或1,2,3,4,5,6-四 苯六羧酸，某些烃的固体络合物和聚酐形成。 固体复合物的分离及其随后的分解导致复合物，其中优选复合的那些三甲基萘中的基团更丰富。 这些三甲基萘可以被脱甲基化成在生产染料中有用的二甲基萘。

公开(公告)号：US3665045A

公开(公告)日：1972-05-23

申请号：US3665045D

申请日：1970-05-01

Applicant: SUN OIL CO

Inventor： DAVIS RONALD I ,  SCOTT KENNETH A

IPC: C07C7/152 ,  C07C7/00

CPC classification number: C07C7/152 ,  C07C15/24

Abstract: Binary eutectics of dimethylnapthalenes having each methyl group at a Beta position cannot be fractionated by crystallization and are difficult to fractionate by distillation. However, by dissolving the normally solid eutectic in an inert solvent and contacting the resulting solution with a dianhydride of 1,2,4,5,benzenetetracarboxylic acid or a dianhydride of 1,2,3,4benzenetetracarboxylic acid, a solid complex is formed. Separation of the solid complex and its subsequent decomposition results in a complexate that is substantially richer in a dimethylnapthalene which is preferentially complexed. Dimethylnaphthalenes are oxidized to naphthalenecarboxylic acids which are used in the production of dyes and pigments.

公开(公告)号：US3665043A

公开(公告)日：1972-05-23

申请号：US3665043D

申请日：1970-05-01

Applicant: SUN OIL CO

Inventor： DAVIS RONALD I ,  SCOTT KENNETH A

IPC: C07C7/152 ,  C07C7/00

CPC classification number: C07C7/152 ,  C07C15/24

Abstract: Mixtures of C12 bicyclic aromatic hydrocarbons containing dimethylnaphthalenes are difficult to fractionate by conventional techniques such as distillation or crystallization. However, by contacting such mixtures with the dianhydride of 1,2,4,5benzenetetracarboxylic acid, the dianhydride of 1,2,3,4benzenetetracarboxylic acid or the trianhydride of 1,2,3,4,5,6,benzenehexacarboxylic acid, a solid complex of certain hydrocarbons and the polyanhydride is formed. Separation of the solid complex and its subsequent decomposition results in a complexate that is substantially richer in those dimethylnaphthalenes which are preferentially complexed. Upon further processing these dimethylnaphthalenes have utility in the production of dyes.

公开(公告)号：US3670039A

公开(公告)日：1972-06-13

申请号：US3670039D

申请日：1970-05-01

Applicant: SUN OIL CO

Inventor： DAVIS RONALD I

IPC: C07C7/152 ,  C07C7/00

CPC classification number: C07C7/152 ,  C07C15/24

Abstract: Mixtures of C12 bicyclic aromatic hydrocarbons containing dimethylnaphthalenes are difficult to fractionate by conventional techniques such as distillation or crystallization. However, by dissolving a tetrahalophthalic anhydride in such a mixture at an elevated temperature, followed by subsequent cooling, a solid complex of certain hydrocarbons and the anhydride is formed. Separation of the solid complex from the cooled mixture and its subsequent decomposition results in a product that is substantially richer in those dimethylnaphthalenes which are preferentially complexed. Upon further processing, these dimethylnaphthalenes have utility in the production of dyes.

Abstract translation: 含有二甲基萘的C 12双环芳烃的混合物难以通过常规技术如蒸馏或结晶分馏。 然而，通过在高温下将四卤代邻苯二甲酸酐溶解在这种混合物中，随后冷却，形成某些烃和酸酐的固体络合物。 固体配合物与冷却的混合物的分离及其随后的分解导致产物比实际上更加富集在那些优先复合的那些二甲基萘中。 在进一步加工时，这些二甲基萘可用于生产染料。