The present invention provides moisture-curable compositions comprising an amino ester catalyst as an alternative to organotin catalysts. In particular, the present invention provides a condensation catalyst comprising a secondary amine, a tertiary amine, a substituted amine (e.g., an amino ester compound), or a combination of two or more thereof and optionally one or more aminosilanes or siloxanes. Further, the compositions employing amino esters allow for tuning or adjusting the cure characteristics of the compositions by the addition of other components such as adhesion promoters or acidic compounds, and provides good adhesion and storage stability.

The present invention provides moisture-curable compositions comprising an amino ester catalyst as an alternative to organotin catalysts. In particular, the present invention provides a condensation catalyst comprising a secondary amine, a tertiary amine, a substituted amine (e.g., an amino ester compound), or a combination of two or more thereof and optionally one or more aminosilanes or siloxanes. Further, the compositions employing amino esters allow for tuning or adjusting the cure characteristics of the compositions by the addition of other components such as adhesion promoters or acidic compounds, and provides good adhesion and storage stability.

The invention relates to a salt of glutamic acid-N,N-diacetic acid (GLDA) of the formula GLDA-Y.sub.mH.sub.n, wherein m is equal to or more than 0.5 and lower than or equal to 2.5, n+m=4, and wherein Y is a monovalent cation that is not a proton, comprising L-GLDA-Y.sub.mH.sub.n to D-GLDA-Y.sub.mH.sub.n in a range between 100:0 and 50:50 (L:D), characterized in that the salt is crystalline, a process to make such crystalline salt, and to uses of such salt, such as, in particular, in detergent compositions.

The invention relates to a salt of glutamic acid-N,N-diacetic acid (GLDA) of the formula GLDA-Y.sub.mH.sub.n, wherein m is equal to or more than 0.5 and lower than or equal to 2.5, n+m=4, and wherein Y is a monovalent cation that is not a proton, comprising L-GLDA-Y.sub.mH.sub.n to D-GLDA-Y.sub.mH.sub.n in a range between 100:0 and 50:50 (L:D), characterized in that the salt is crystalline, a process to make such crystalline salt, and to uses of such salt, such as, in particular, in detergent compositions.

Provided is a stable isotope-labeled aliphatic amino acid enabling the assignment of the signal of an amino acid residue side chain by increasing to the maximum the observation sensitivity to an NMR signal of the same amino acid residue side chain, and allowing NOE (nuclear Overhauser effect) between protons in the amino acid residue to be observed. The stable isotope-labeled aliphatic amino acid is for constituting a protein and satisfies all of the following conditions (1) to (3): (1) two or more carbon atoms are labeled with .sup.13C; (2) of two or more carbon atoms labeled with .sup.13C, a carbon atom other than a carbon atom of a methyl group, which is capable of bonding to a hydrogen atom, has one .sup.1H directly bonded thereto, while the carbon atom of the methyl group has at least one .sup.1H directly bonded thereto; and (3) other carbon atoms adjacent to all the .sup.13C are all .sup.12C.

Provided is a stable isotope-labeled aliphatic amino acid enabling the assignment of the signal of an amino acid residue side chain by increasing to the maximum the observation sensitivity to an NMR signal of the same amino acid residue side chain, and allowing NOE (nuclear Overhauser effect) between protons in the amino acid residue to be observed. The stable isotope-labeled aliphatic amino acid is for constituting a protein and satisfies all of the following conditions (1) to (3): (1) two or more carbon atoms are labeled with .sup.13C; (2) of two or more carbon atoms labeled with .sup.13C, a carbon atom other than a carbon atom of a methyl group, which is capable of bonding to a hydrogen atom, has one .sup.1H directly bonded thereto, while the carbon atom of the methyl group has at least one .sup.1H directly bonded thereto; and (3) other carbon atoms adjacent to all the .sup.13C are all .sup.12C.

This invention relates to a process for producing cyanoacetates using aspartic acid as a precursor.

This invention relates to a process for producing cyanoacetates using aspartic acid as a precursor.

Pulverulent compositions of a complex between an acid and a metal form an at least partially spherical particle. The acid is selected from 2-hydroxy-4-methyl-thiobutanoic acid (HMTBA), methionine, aspartic acid, the alginic acids, the pectinic acids, and the corresponding anions, in particular 2-hydroxy-4-methyl-thiobutanoate, methioninate, aspartate, the alginates and the pectinates. The metal is divalent or trivalent. The particle has an amorphous fraction the mass of which represents at least 50% of the total mass of the particle. The particle is substantially devoid of uncomplexed acid or anion and of uncomplexed metal or metal cation.

Pulverulent compositions of a complex between an acid and a metal form an at least partially spherical particle. The acid is selected from 2-hydroxy-4-methyl-thiobutanoic acid (HMTBA), methionine, aspartic acid, the alginic acids, the pectinic acids, and the corresponding anions, in particular 2-hydroxy-4-methyl-thiobutanoate, methioninate, aspartate, the alginates and the pectinates. The metal is divalent or trivalent. The particle has an amorphous fraction the mass of which represents at least 50% of the total mass of the particle. The particle is substantially devoid of uncomplexed acid or anion and of uncomplexed metal or metal cation.