Solvay & Cie (societe Anonyme)

Solvay & Cie

Saint-gobain Abrasives, Inc.

Saint-gobain Abrasifs

Solvay Sa

Peptisyntha Sa

Andre Collin

Rene Walraevens

Henri Wautier

Muthu Jeevanantham

Renaud Fix

Lingyu Li

The present invention relates to brominated polyether polyols, processes for the production as well as intermediates useful in the production of the same and to processes for the preparation of flame-retardant blends, premixes as well as polyurethane foams.

Process for the production of brominated polyether polyols

The present invention relates to a process for producing N-alkyl-N-trialkylsilylamides from trialkylsilylhalides and N-alkylamides in the presence of a base and in the absence of a solvent.

Industrial process for the preparation of N-alkyl-N-trialkylsilylamides

An abrasive article including a body having a bond material and abrasive particles contained in the bond material, the abrasive particles including a composite composition having alumina (AlO), iron oxide (FeO), and silica (SiO). The abrasive particles further include an aspect ratio of at least 1:1 and an average porosity in a range of about 0 vol % to not greater than about 15 vol %.

Abrasive article comprising abrasive particles of a composite composition

A compound useful in the synthesis of peptides containing arginine, and including a guanidine group and an unsubstituted tetraphenylborate ion, and having the formula: ##STR1## wherein A is a hydrogen atom, an amino acid group which is linked by a peptide bond and which may be substituted, a peptide radical which is linked by a peptide bond and which may be substituted, or an aliphatic or aromatic radical effective as a protecting group or an activating group, and wherein Y is an hydroxyl group, a halogen atom, an amino group, an amino acid group which is linked by a peptide bond and which may be substituted, a peptide radical which is linked by a peptide bond and which may be substituted, or an aliphatic or aromatic radical effective as a protecting group or an activating group.

Compound including a guanidine group and an unsubstituted

Use of a guanidine-related compound in solution phase peptide synthesis, the guanidine-related compound including a tetraphenylborate ion and having the general formula: ##STR1## wherein R denotes an organic radical including at least one amine group, and R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 denote inorganic or organic groups independently of each other.

Use of guanidine-related compounds comprising a substituted

Use of a guanidine-related compound in solution phase peptide synthesis, the guanidine-related compound comprising a tetraphenylborate ion and having the general formula: ##STR1## wherein R denotes an organic radical comprising at least one amine group.

Use of guanidine-related compounds comprising a tetraphenyl-borate ion

Polyetherpolyols corresponding to the general formula: ##STR1## in which: Y denotes oxyalkylene radicals derived from alkene oxides,

Brominated polyetherpolyols, process for their preparation and the use

Phosphobrominated polyetherpolyols which contain in their molecule oxyalkylene radicals bound to phosphorus atoms in the phosphate or phosphonate state and 1,4-dioxy-2,3-dibromo-2-butylene radicals in which the ratio of the total number of oxyalkylene radicals to the total number of phosphorus atoms is equal to at least 7. These polyetherpolyols can be used as flame-retarding reactive additives in the manufacture of flame-retardant flexible polyurethane foams involving polyetherpolyols, the foams possessing good comfort-conferring properties.

Phosphobrominated polyetherpolyols and processes for production thereof

Halogenated polyether-polyols lacking terminal primary chlorohydrin and hydroxyl groups are reacted with organic isocyanates to produce semi-rigid or rigid polyurethane foam having excellent physical, mechanical and processing characteristics and good fire-resistance. The polyether-polyols are used individually, as admixtures with each other and/or as admixtures with non-halogenated polyether-polyols.

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Ligny, Belgium

Andre Collin