Bang Sue, Thailand
Bang Sue, Thailand

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The present invention relates to a compound having the formula La M (OR1)b R2c Xd wherein M is a metal selected from Ti, Zr and Hf; L is a ligand selected from permethylpentalene, (hydro)permethyl-pentalene, (hydro)pentalene, cyclopentadiene, indene and ethylene- or silane-bridged indene, preferably (bis)indene; R1 is a 1-6C alkyl, substituted or unsubstituted phenyl, or a substituted or unsubstituted phenylalkylene group; R2 is Me or Et; X is halogen; a = 1 to 3, b = 1 to 3, c = 0 or 1 and d = 0, 1, 2 or 3; and dimers thereof, the use of the compound as an initiator in the polymerisation of lactide monomer and a process for producing a polylactide performed by contacting a lactide monomer with the compound.


Patent
SCG Chemicals Co. | Date: 2017-03-22

The present invention relates to a process for the oligomerisation of ethylene which comprises contacting ethylene with a transition metal- permethylpentalene complex, and a transition metal compound utilized therein.


Patent
Scg Chemicals Co. and Siam Refractory Industry Co. | Date: 2017-01-31

Titanium dioxide is used as an emissivity enhancer in high emissivity coating compositions. The titanium dioxide increases the emissivity of the high emissivity coating compositions. In certain embodiments, titanium dioxide is recovered from industrial waste sources such as catalyst containing waste streams from olefin polymerization processes or re-based sources. Titanium dioxide emissivity enhancers recovered from industrial waste sources contribute favorably to the cost of manufacturing high emissivity coating compositions containing such enhancers.


Patent
University of Oxford and SCG Chemicals Co. | Date: 2017-02-22

Novel Si-bridged metallocene catalysts of formula I defined herein are disclosed, as well as their use in olefin polymerisation reactions.


Patent
SCG Chemicals Co. | Date: 2017-02-01

Layered double hydroxides having a high surface area (at least 125 m2/g) and the formula (I) wherein M and M are different and each is a charged metal cation (and must be present), z = 1 or 2; y = 3 or 4, 0xb is 0 to 10, c = 0 to 10, X is an anion, n is the charge on the anion, and a = z(1-x)+xy-2; AMO-solvent is aqueous miscible organic solvent, may be prepared by a method which comprises a) precipitating a layered double hydroxide having the formula [Mz+1-xMy+x(OH)2]a+(Xn-)abH2O wherein M, M, z, y, x, a, b and X are as defined above from a solution containing the cations of the metals M and M and the anion Xn-; b) ageing the layered double hydroxide precipitate obtained in step a) in the original solution; c) collecting, then washing the layered double hydroxide precipitate; d) dispersing the wet layered double hydroxide in an AMO solvent so as to produce a slurry of the layered double hydroxide in the solvent; e) maintaining the dispersion obtained in step d); and f) recovering and drying the layered double hydroxide. The high surface area products have low particle size and are particularly suitable for use as catalysts, catalyst supports, sorbents and coatings.


The present invention relates to a synergistic dual olefin copolymerisation catalyst system comprising a solid support material having, on its surface, two or more catalytic metal complexes wherein the two or more catalytic metal complexes comprise at least one first transition metal complex and a second transition metal complex different from the first transition metal complex; use of such a system as a catalyst; a process for producing a polymer of an olefin utilizing the catalyst system.


Patent
SCG Chemicals Co. | Date: 2016-02-10

The present invention relates to a stabilized rhenium-based heterogeneous catalyst, obtainable by a process comprising contacting a rhenium-based heterogeneous catalyst with a stabilizing agent at a temperature in a range from 0-100C, the stabilizing agent comprising an aliphatic hydrocarbon compound and use thereof.


Patent
SCG Chemicals Co. | Date: 2016-05-31

The present invention relates to a process A process for modifying a layered double hydroxide (LDH), the process comprising, a. providing a material comprising a layered double hydroxide of formula: [M^(z+)_(1-x)M^(y+)_(x)(OH)_(2)]^(q+)(X^(n))_(q/n).bH_(2)O wherein M and M are metal cations, z is 1 or 2, x is 0.1 to 1, b is 0 to 5, y is 3 or 4, X is an anion, n is 1 to 3 and q is determined by x, y and z, b. optionally washing the material at least once with a mixture of water and a mixing solvent miscible with water, and c. washing the material obtained in step a or b at least once with at least one first solvent, the first solvent being miscible with water and having a solvent polarity P


Patent
SCG Chemicals Co. | Date: 2016-03-09

Ethylbenzene can be separated from a C8 aromatics mixture containing ethylbenzene and a close boiling compound by extractive distillation using an extractive agent comprising a mixture of a chlorinated aromatic compound and another compound selected from furandione derivatives and organic nitriles.


Patent
SCG Chemicals Co. | Date: 2016-01-20

The present invention relates to a catalyst containing at least one group VIA and/or group VIIA transition metal on a solid support.

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