Sabic Innovative Plastics IP B.v.

Sabic Global Technologies B.v.

Bernd Jansen

Jan Henk Kamps

Edward Kung

Patrick Joseph McCloskey

Paul Michael Smigelski, Jr

Chinniah Thiagarajan

Daniel Francis Lowery

Hans Peter Brack

Sjef Berndsen

Hans-Peter Brack

Roland Sebastian Assink

Jan Pleun Lens

Dennis Karlik

Safwat Ebeid Tadros

Michael Matthew Laurin

Frans Adriaansen

Hans Looij

Wilhelmus Johannes Daniel Steendam

Paul Michael Smigelski

Hans De Brouwer

Jan-Willem Goedmakers

Gerardo Hidalgo Llinas

Han Vermeulen

Dennis Willemse

Safwat E Tadros

Santhosh Kumar Rajendran

Vauhini Rm

Vauhini Raja Manuri

Michael Paul Smigelski

Daniel Lowery

A multiwall sheet comprises a sheet, comprising walls, wherein the walls comprise a first wall; a second wall; and an outermost rib extending between the first wall and the second wall, wherein the first wall extends longitudinally past the outermost rib to a first wall end and wherein the second wall extends longitudinally past the outermost rib to a second wall end; and an end cap comprising a top wall having a top wall end, a bottom wall having a bottom wall end, and a connecting wall disposed between the top wall end and the bottom wall end; wherein the end cap is disposed over the first wall end and the second wall end and wherein the top wall and the bottom wall extend longitudinally along the first wall and the second wall past the outermost rib.

Multiwall sheet, methods of making, and articles comprising the multiwall sheet

Disclosed herein is a foam that includes a polysiloxane block copolymer; the polysiloxane block copolymer including a first block that comprises a polysiloxane block and a second block that includes an organic polymer; the second block not containing a polysiloxane; the polysiloxane block being about 5 to about 45 repeat units; the foam having average pore sizes of less than or equal to about 100 nanometers.

Siloxane block copolymer nanoporous foams, methods of manufacture thereof and articles comprising the same

A method of increasing the branching and polydispersity of a polycarbonate includes the steps of: (a) including in the polycarbonate at least one species of an alkyl substituted monomer, and (b) treating the polycarbonate at an elevated temperature and for a sufficient time to increase the branching and polydispersity relative to an otherwise equivalent polycarbonate without alkyl substituents.

Branched polycarbonate resins and processes to prepare the same

An isosorbide-containing polycarbonate composition is provided. The composition contains a polycarbonate having repeat units derived from isosorbide, a polycarbonate-property-modifying additive, and a pH stabilizer. When a solution containing 10 wt. % of the composition dissolved in dichloromethane is prepared the solution has a non-aqueous pH in a range of equal to or between 0.8 below and 0.5 above the pH of the dichloromethane.

Stabilization of isosorbide-based polycarbonate

A method of making polycarbonate includes the steps of forming polycarbonate by a melt transesterification method using an activated diaryl carbonate, and compounding the polycarbonate with a phosphorus-containing compound that has an abstractable proton or hydrolyzable group. The phosphorus-containing compound is compounded with the polycarbonate in an amount sufficient to result in an improvement in the color properties of the polycarbonate as compared to pellets formed from the same polycarbonate without addition of the phosphorus-containing compound.

Polycarbonate with reduced color

A method for preparing a molded article includes the steps of (a) obtaining a polycarbonate resin and (b) molding the polycarbonate resin. The polycarbonate resin is made by a transesterification reaction using an activated diaryl carbonate such that the polycarbonate is susceptible to the formation of internal ester linkages (IEL). The method occurs with the proviso that the polycarbonate resin, the molding conditions or both are selected to control the amount of IEL formed during the molding process to a level of less than 0.4 mol %.

Method for making molded polycarbonate articles with improved color

Polycarbonates incorporating terminal carbonate groups derived from ester-substituted activated carbonates in a transesterification process have unfavorable properties with respect to color, hydrolytic stability and thermal stability, particularly when the polycarbonate containing such end groups is molded. The number of activated carbonate end groups formed during the melt transesterification formation of polycarbonate can be reduced by reacting a dihydroxy compound with an activated diaryl carbonate in the presence of an esterification catalyst to produce a polycarbonate, in the presence of a monohydroxy chainstopper such as para-cumyl phenol in an amount that results in 35 to 65 mol % of the end groups being derived from the monohydroxy chainstopper. Suitably, the reactants are provided such that the molar ratio of activated diaryl carbonate to the total of dihydroxy compound plus &#xbd; the chainstopping reagent that is less than 1.

Method of preparing polycarbonate

Polycarbonates incorporating terminal carbonate groups derived from ester-substituted activated carbonates, for example terminal methyl salicyl carbonate (TMSC) derived from the use of BMSC as the activated carbonate in a transesterification process, have unfavorable properties with respect to color, hydrolytic stability and thermal stability, particularly when the polycarbonate containing such end groups is molded. The number of activated carbonate end groups formed during the melt transesterification formation of polycarbonate can be reduced, however, without sacrificing the benefits of using an activated diaryl carbonate, and without requiring a separate reaction or additional additives by reacting a dihydroxy compound with an activated diaryl carbonate in the presence of an esterification catalyst to produce a polycarbonate, wherein the molar ratio of activated diaryl carbonate to dihydroxy compound is less than 1 when expressed to at least three decimal places, for example 0.996 or less.

Polycarbonates and method of preparing same

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Bergen op Zoom, Netherlands

Bernd Jansen