Basf Se Corporation

Michael Klemens Mueller

Frank Jaekel

Marta Reinoso Garcia

Thomas Schmidt

Carsten Sueling

Armin Stamm

Verena Mormul

Kati Schmidt

Astrid Schmidt

Karl Kolter

Maximilian Angel

Sylke Haremza

Juergen Detering

Markus Hartmann

Robert Heinz

Markus Christian Biel

Joerg Erbes

Michael Schoenherr

Radoslaw Kierat

Volker Klock

Gerhard Lange

Silke Gebert

Gazi Tuerkoglu

Tobias Kortekamp

Cecile Schneider

Oscar Lafuente Cerda

Andreas Kempter

Matthias Karl

Roland Boehn

Jeremy T Manning

Bernhard Linner

Angela Ulzhoefer

Matthias Voges

Tile Gieshoff

Dan-Tam Daniel Tang

Johannes Felix Haus

Kai Bergner

Sung Yeun Choi

Jeremy Manning

Process for manufacturing granules or powders comprising the steps of (a) providing an aqueous solution or slurry of (A) at least one chelating agent according to general formula (I a) [CH—CH(COO)—N(CH—COO)]MH(I a) wherein M is selected from alkali metal cations and ammonium, same or different, and x is in the range of from 0.01 to 1.0 or (I b) [OOC—CHCH—CH(COO)—N(CH—COO)]MH(I b) wherein M is as defined above, and x in formula (I b) is in the range of from 0.01 to 2.0, and (B) at least one polymer selected from (B1) polyaspartates with an average molecular weight Min the range of from 1,000 to 20,000 g/mole, and (B2) copolymers comprising, in copolymerized form, (α) at least one ester of an ethylenically unsaturated mono- or dicarboxylic acid, and (β) at least one ethylenically unsaturated N-containing monomer, and (b) spray drying or granulating said solution or slurry.

Granules or powders and methods for their manufacture

A process for making a granule containing (A) at least one chelating agent selected from alkali metal salts of methyl glycine diacetic acid (MGDA) and of iminodisuccinic acid (IDS), and, optionally, (B) at least one homo- or copolymer of (meth) acrylic acid, partially or fully neutralized with alkali, the process including the steps of (a) providing an aqueous solution or slurry containing chelating agent (A) and, if applicable, (co) polymer (B), (b) removing most of the water by spray granulation in a fluidized bed, (c) treating the resultant granule in a vessel of which at least one part rotates around a horizontal axis and wherein the vessel is selected from paddle mixers, free-fall mixers and plough share mixers.

Granules of MGDA and (meth)acrylic acid homo- or co-polymer; process for making the same

Process for making a powder or granule containing

Process for making a granule

Process making a powder or granule containing

Process for making a granule or powder

A process for making solid methylglycine diacetate (MGDA) alkali metal salt (a) includes:

Process for making solid methylglycine diacetate (MGDA) alkali metal salt, and solid particles

The present invention is directed towards a process for making a powder or granule containing

Powder and granule, process for making such powder and granule, and use thereof

The present invention is directed towards a process for manufacturing a complexing agent, said process comprising the steps of (a) Providing a nitrile according to general formula (I a) or (I b)  With M being selected from alkali metal and hydrogen and combinations thereof, (b) Saponification with a total alkali amount of 2.5 to 2.9 mol of alkali metal hydroxide per mole of nitrile according to general formula (I a) or (I b), respectively, and a pH value in the range of from 9.5 to 11.5 at the end of step (b), (c) Adding an amount of alkali metal hydroxide so that the total alkali content is 2.9 to 3.15 moles per mole nitrile according to general formula (I a) or (I b), respectively, and (d) Allowing further conversion.

Process for manufacturing a complexing agent

Process for making a powder or granule containing at least one chelating agent selected from alkali metal salts of methyl glycine diacetic acid (MGDA) and glutamic acid diacetate (GLDA) and iminodisuccinic acid (IDS), said process comprising the steps of (a) introducing an aqueous solution or aqueous slurry of the respective chelating agent (A) into a spray-dryer or spray-granulator, and removing most of said water by spray-drying or spray granulation using a gas with an inlet temperature of 125 to 250&#xb0; C., (b) withdrawingpowder or granules, respectively, from the spray-dryer or spray-granulator, respectively, (c) separating off fines from said powder or granules, wherein said fines have a maximum particle diameter of 350 &#x3bc;m, (d) separating off lumps from said powder or granules, wherein said lumps have a particle diameter of 1,500 &#x3bc;m or more, (e) milling said lumps to a maximum particle diameter of 500 &#x3bc;m, (f) re-introducing said fines from step (c) and milled lumps from step (e) into the spray-dryer or spray-granulator, wherein the share of fines is in the range of from 0.5 to 20% by weight of the total chelating agent (A) withdrawn in step (b) and the share of milled lumps is in the range of from 5 to 60% by weight of the total chelating agent (A) withdrawn in step (b).

Powders and granules and process for making such powders and granules

The invention relates to a process for preparing silica-coated particles of an inorganic expanding agent, the silica-coated particles and their use. The silica-coated particles show a delayed release of the expanding agent particularly in alkaline medium and at elevated temperatures. They are therefore useful in the oil and construction industry.

Silica-coated expanding agents and their use in cementitious systems

Process for manufacturing granules of at least one alkali metal salt of aminopolycarboxylic acid (A), comprising the steps of (a) providing an aqueous slurry of alkali metal salt of aminopolycarboxylic acid (A), (b) maintaining said aqueous slurry at a temperature in the range of from 50 to 90&#xb0; C. over a period of time in the range of from 2 to 180 hours, (c) spray granulating said slurry with a gas inlet temperature of at least 150&#xb0; C.

Process for manufacturing granules

Process for manufacturing granules of salts of at least two aminopolycarboxylic acids (A), com-prising the steps of (a) providing an aqueous solution of (A1) at least one alkali metal salt of a mixture of L- and D-enantiomers of methyl glycine diacetic acid (MGDA), said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 10 to 95%, (A2) at least one alkali metal salt of L- and D-enantiomers of glutamic acid diacetic acid (GLDA) or of enantiomerically pure L-GLDA, the weight ratio of (A1) and (A2) being in the range of from 1:9 to 9:1, (b) spray granulating said solution with a gas inlet temperature of at least 125&#xb0; C. Additionally, the present invention relates to granules and to their use.

Process for manufacturing MGDA/GLDA granules, granules, and their use

Described are solid dispersions of hydrophobic active ingredients and cationic copolymers of N,N-diethylaminoethyl methacrylate and methyl methacrylate in a weight ratio of the monomers of from 35:65 to 55:45. Also described are the preparation and use of such solid dispersions for pharmaceutical dosage forms.

Active-ingredient-containing solid dispersions based on diethylaminoethyl methacrylate copolymers

The present invention relates to a process for drying particulate polymers, comprising the steps of:  The present invention further relates to a process for working up particulate polymers.

Method for drying particulate polymers

Growing community of inventors

Ludwigshafen, Germany

Michael Klemens Mueller