Abstract: There is disclosed a method for treatment of an aqueous lithium salt-containing solution in a direct lithium extraction process comprising lithium-selective media, wherein the aqueous lithium salt-containing solution comprises one or more foulants, the method comprising the steps of adjusting the oxidative-reductive potential and/or pH of the aqueous lithium salt-containing solution to render the one or more foulants inert to the lithium-selective media; and removing the one or more inert foulants from the aqueous lithium salt-containing solution prior to addition of the aqueous lithium salt-containing solution to the lithium-selective media in a direct lithium extraction process.

Abstract: Processes, catalysts and systems for preparing a composition comprising aliphatic, olefinic, cyclic and/or aromatic hydrocarbons of seven or greater carbon atoms per molecule are provided.

Abstract: A method for producing an oligomeric polyethylene terephthalate (PET) substrate for use in a recycled PET (rPET) manufacturing process comprises adding recycled bis-hydroxylethyleneterephthalate (rBHET) or a higher molecular weight oligomer derived from rBHET and water to a reaction zone and reacting the rBHET and water in the reaction zone to produce an oligomeric PET substrate represented by the Formula (I): wherein R1 is a carboxyl end group or a hydroxyl end group, R2 is a carboxyl end group or a hydroxyl end group, and n is a degree of polymerisation (Dp).

Abstract: A method for producing an oligomeric polyethylene terephthalate (PET) substrate for use in a recycled PET (rPET) manufacturing process, comprising (i) adding recycled bis-hydroxylethylenete rephthalate (rBHET) and an under-esterified purified terephthalic acid (PTA) oligomer to a reaction zone; and ii) reacting the rBHET and the under-esterified PTA oligomer in the reaction zone to produce an oligomeric PET substrate represented by the formula (I), wherein R1 is a carboxyl end group or a hydroxyl end group, R2 is a carboxyl end group or a hydroxyl end group, and n is a degree of polymerisation (Dp).

Abstract: A method for producing an oligomeric PET substrate for use in a rPET manufacturing process comprises reacting recycled bis-hydroxylethyleneterephthalate (rBHET) or a higher molecular weight oligomer derived from rBHET, with PTA to produce an oligomeric PET substrate represented by Formula (I), wherein R1 is a carboxyl end group or a hydroxyl end group, R2 is a carboxyl end group or a hydroxyl end group, and n is a degree of polymerisation.

Abstract: A method for improving L* color of polyethylene terephthalate polymer, the method including bis-hydroxylethyl-eneterephthalate being polycondensed to produce said polyethylene terephthalate polymer in a polyethylene terephthalate manufacturing process, and wherein said process requires an antimony-containing catalyst, the method comprising the steps of: i) adding said antimony-containing catalyst at a temperature in a range of a melting point of said BHET to an upper temperature of 220° C.; and ii) exposing said BHET in a molten state to glycol removal before addition of said antimony-containing catalyst.