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

Inventor： ROBERT DAVID ALLEN ,  KRISHNA MOHAN BAJJURI ,  GREGORY BREYTA ,  JAMES LUPTON HEDRICK ,  CARL ERIC LARSON

IPC: C08J11/28 ,  C07C51/09

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.

公开(公告)号：GB2548726A

公开(公告)日：2017-09-27

申请号：GB201707907

申请日：2015-10-19

Applicant: IBM

Inventor： JEFFREY GELORME ,  LI-WEN HUNG ,  PAUL ANDRY ,  CORNELIA KANG-I TSANG ,  JOHN KNICKER-BOCKER ,  ROBERT DAVID ALLEN

IPC: H01L21/683

Abstract: A method for adhesive bonding in microelectronic device processing is provided that includes bonding a handling wafer to a front side of a device wafer with an adhesive comprising phenoxy resin; and thinning the device wafer from the backside of the device wafer while the device wafer is adhesively engaged to the handling wafer. After the device wafer has been thinned, the adhesive comprising phenoxy resin may be removed by laser debonding, wherein the device wafer is separated from the handling wafer.

公开(公告)号：GB2604555A

公开(公告)日：2022-09-07

申请号：GB202208762

申请日：2020-10-22

Applicant: IBM

Inventor： YOUNG-HYE NA ,  JANGWOO KIM ,  ROBERT DAVID ALLEN ,  JOEL DE SOUZA ,  JOHN COLLINS ,  DEVENDRA SADANA

IPC: H01M10/0568 ,  H01M4/38

Abstract: A battery includes a cathode with a metal halide and an electrically conductive material, wherein the metal halide acts as an active cathode material; a porous silicon anode with a surface having pores with a depth of about 0.5 microns to about 500 microns, and a metal on the surface and in at least some of the pores thereof; and an electrolyte contacting the anode and the cathode, wherein the electrolyte includes a nitrile moiety.

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

Inventor： ROBERT DAVID ALLEN ,  KRISHNA MOHAN BAJJURI ,  GREGORY BREYTA ,  JAMES LUPTON HEDRICK ,  CARL ERIC LARSON

IPC: C08J11/28 ,  C07C51/09

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.