INTEGRATED CIRCUIT AND ITS MANUFACTURING PROCESS

    公开(公告)号:JPH10135332A

    公开(公告)日:1998-05-22

    申请号:JP28044397

    申请日:1997-10-14

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To make the arranging interval of metallic circuit wiring narrower without increasing cross talk nor capacity coupling, by reducing the dielectric constant of a dielectric material by arranging a dielectric composition containing the resulted product of the reaction between a multi-branched high polymer and an organic polysilica adjacently to the circuit wiring on a substrate. SOLUTION: A dielectric composition 6 containing the resulted product of the reaction between a multi-branched high polymer and an organic polysilica is arranged adjacently to metallic circuit wiring 4 laid on a substrate 2. A suitable multi-branched high polymer includes multi-branched poly(allyl ether phenyl quinoxaline), poly(ether quinoline), poly(allyl ester), poly(ether ketone), etc. In addition, a suitable polysilica includes such silsesquioxane as the phenyl/ C1-6 alykylsilsesquioxane, etc. For example, the dielectric material 6 containing the reaction product is disposed between the metallic circuit wiring 4 laid on the substrate 2 having vertical studs 8.

    Methods and materials for depolymerizing polyesters

    公开(公告)号:GB2537264A

    公开(公告)日:2016-10-12

    申请号:GB201607798

    申请日:2014-08-01

    Applicant: IBM

    Abstract: Provided is a method of depolymerizing polyesters from post-consumer products, such as beverage bottles, to produce a high purity reaction product. For the depolymerization reaction, the polyesters are reacted with an alcohol having 2 to 5 carbons and an amine organocatalyst at a temperature of about 150 degrees C to about 250 degrees C. In one application, the use an organocatalyst with a boiling point significantly lower than the boiling point of the reactant alcohol allows for the ready recycling of the amine organocatalyst. In another application, performing the depolymerization reaction under pressure at a temperature above that of the alcohol allows for accelerated depolymerization rates and the recovery of the organocatalyst with no further heat input. In a further application, glycolytic depolymerization of poly(ethylene terephthalate) (PET) from post-consumer beverage bottles produces a pure reaction product of bis(2-hydroxyethyl)terephthalate (BHET), which may in turn be used to produce high purity beverage bottle grade PET, in a closed loop process with minimal output and waste.

    Methods of preparing polyhemiaminals and polyhexahydrotriazines

    公开(公告)号:GB2535360B

    公开(公告)日:2017-04-12

    申请号:GB201606994

    申请日:2014-09-28

    Applicant: IBM

    Abstract: Polyhexahydrotriazine (PHT) film layers are formed by a process comprising heating a first mixture comprising i) a solvent, ii) paraformaldehyde, and iii) a diamine monomer comprising two primary aromatic amine groups at a temperature of about 20° C. to less than 150° C. This heating step forms a stable polyhemiaminal (PHA) in solution, which can be cast on a surface of a substrate, thereby forming an initial film layer comprising the PHA. The initial film layer is heated at a temperature of 180° C. to about 280° C., thereby converting the PHA film layer to a PHT film layer. Young's moduli of about 8 GPA to about 14 GPA have been observed for the PHT film layers.

    Methods and materials for depolymerizing polyesters

    公开(公告)号:GB2537264B

    公开(公告)日:2021-01-20

    申请号:GB201607798

    申请日:2014-08-01

    Applicant: IBM

    Abstract: Provided is a method of depolymerizing polyesters from post-consumer products, such as beverage bottles, to produce a high purity reaction product. For the depolymerization reaction, the polyesters are reacted with an alcohol and an amine organocatalyst at a temperature of about 150° C. to about 250° C. In one application, the use of an organocatalyst with a boiling point significantly lower than the boiling point of the reactant alcohol allows for the ready recycling of the amine organocatalyst. In another application, performing the depolymerization reaction under pressure at a temperature above the boiling point of the alcohol allows for accelerated depolymerization rates and the recovery of the organocatalyst with no further heat input. In a further application, glycolytic depolymerization of poly(ethylene terephthalate) (PET) produces a reaction product of bis(2-hydroxyethyl)terephthalate (BHET), which may in turn be used to produce high purity beverage bottle grade PET, in a closed loop process with minimal waste.

    Methods of preparing polyhemiaminals and polyhexahydrotriazines

    公开(公告)号:GB2535360A

    公开(公告)日:2016-08-17

    申请号:GB201606994

    申请日:2014-09-28

    Applicant: IBM

    Abstract: Polyhexahydrotriazine (PHT) film layers are formed by a process comprising heating a first mixture comprising i) a solvent, ii) paraformaldehyde, and iii) a diamine monomer comprising two primary aromatic amine groups at a temperature of about 20°C to less than 150 °C. This heating step forms a stable polyhemiaminal (PHA) in solution, which can be cast on a surface of a substrate, thereby forming an initial film layer comprising the PHA. The initial film layer is heated at a temperature of 180°C to about 280°C, thereby converting the PHA film layer to a PHT film layer. Young's moduli of about 8 GPA to about 14 GPA have been observed for the PHT film layers.

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