The present invention relates to a cosmetic composition comprising: one or more dicarbonyl derivatives corresponding to formula (I) below, and/or derivatives thereof and/or hydrates thereof and/or salts thereof:

##STR00001##

in which formula (I) R=H, COOH, linear or branched C.sub.1-C.sub.6 alkyl which is optionally substituted with an OH or COOH or Br radical; phenyl or benzyl optionally substituted with an OH or COOH radical; or alternatively an indolyl radical or

##STR00002## one or more silanes corresponding to formula (II) below and/or oligomers thereof:

R.sub.1Si(OR.sub.2).sub.z(R.sub.3).sub.x(OH).sub.y  (II)

in which formula (II): R.sub.1 is a linear or branched, saturated or unsaturated, cyclic or acyclic C.sub.1-C.sub.6 hydrocarbon-based chain substituted with a group chosen from the following groups: amine NH.sub.2 or NHR (R=C.sub.1-C.sub.20 and especially C.sub.1-C.sub.6 alkyl optionally substituted with a radical comprising a silicon atom, C.sub.3-C.sub.40 cycloalkyl or C.sub.6-C.sub.30 aromatic), or with a hydroxyl group, a thiol group, an aryl or aryloxy group which is unsubstituted or substituted, in particular with an amino group or with a C.sub.1-C.sub.4 aminoalkyl group;  R.sub.1 possibly being interrupted with a heteroatom (O, S or NH) or a carbonyl group (CO), R.sub.2 and R.sub.3, which may be identical or different, represent a linear or branched alkyl group comprising from 1 to 6 carbon atoms, y denotes an integer ranging from 0 to 3, and z denotes an integer ranging from 0 to 3, and x denotes an integer ranging from 0 to 2,
with z+x+y=3.

The invention also relates to a process for straightening keratin fibers, especially the hair, using the compounds of formulae (I) and (II) with a straightening step using a straightening iron at a temperature of at least 150° C., preferably ranging from 150 to 250° C.

The present invention relates to a method of synthesizing at least one organic acid comprising oxidizing glycolaldehyde with nitric acid in the presence of a solvent. Advantageously, it is an industrially applicable process, which prepares organic acid, notably glycolic acid and/or glyoxylic acid in a high yield based on bio-based feedstocks.

The present invention relates to a method of synthesizing at least one organic acid comprising oxidizing glycolaldehyde with nitric acid in the presence of a solvent. Advantageously, it is an industrially applicable process, which prepares organic acid, notably glycolic acid and/or glyoxylic acid in a high yield based on bio-based feedstocks.

The present invention relates to a method of synthesizing at least one organic acid comprising oxidizing glycolaldehyde with nitric acid in the presence of a solvent. Advantageously, it is an industrially applicable process, which prepares organic acid, notably glycolic acid and/or glyoxylic acid in a high yield based on bio-based feedstocks.

The present invention relates to a method of synthesizing at least one organic acid comprising oxidizing glycolaldehyde with nitric acid in the presence of a solvent. Advantageously, it is an industrially applicable process, which prepares organic acid, notably glycolic acid and/or glyoxylic acid in a high yield based on bio-based feedstocks.

The present invention relates to a cosmetic composition comprising: one or more dicarbonyl derivatives corresponding to formula (I) below, and/or derivatives thereof and/or hydrates thereof and/or salts thereof:

##STR00001##

in which formula (I) R═H, COOH, linear or branched C.sub.1-C.sub.6 alkyl which is optionally substituted with an OH or COOH or Br radical; phenyl or benzyl optionally substituted with an OH or COOH radical; or alternatively an indolyl radical or

##STR00002## one or more silanes corresponding to formula (II) below and/or oligomers thereof:

R.sub.1Si(OR.sub.2).sub.z(R.sub.3).sub.x(OH).sub.y  (II)

in which formula (II): R.sub.1 is a linear or branched, saturated or unsaturated, cyclic or acyclic C.sub.1-C.sub.6 hydrocarbon-based chain substituted with a group chosen from the following groups: amine NH.sub.2 or NHR (R═C.sub.1-C.sub.20 and especially C.sub.1-C.sub.6 alkyl optionally substituted with a radical comprising a silicon atom, C.sub.3-C.sub.40 cycloalkyl or C.sub.6-C.sub.30 aromatic), or with a hydroxyl group, a thiol group, an aryl or aryloxy group which is unsubstituted or substituted, in particular with an amino group or with a C.sub.1-C.sub.4 aminoalkyl group; R.sub.1 possibly being interrupted with a heteroatom (O, S or NH) or a carbonyl group (CO), R.sub.2 and R.sub.3, which may be identical or different, represent a linear or branched alkyl group comprising from 1 to 6 carbon atoms, y denotes an integer ranging from 0 to 3, and z denotes an integer ranging from 0 to 3, and x denotes an integer ranging from 0 to 2,
with z+x+y=3.

The invention also relates to a process for straightening keratin fibers, especially the hair, using the compounds of formulae (I) and (II) with a straightening step using a straightening iron at a temperature of at least 150° C., preferably ranging from 150 to 250° C.

The present invention relates to a cosmetic composition comprising: one or more dicarbonyl derivatives corresponding to formula (I) below, and/or derivatives thereof and/or hydrates thereof and/or salts thereof:

##STR00001##

in which formula (I) R═H, COOH, linear or branched C.sub.1-C.sub.6 alkyl which is optionally substituted with an OH or COOH or Br radical; phenyl or benzyl optionally substituted with an OH or COOH radical; or alternatively an indolyl radical or

##STR00002## one or more silanes corresponding to formula (II) below and/or oligomers thereof:

R.sub.1Si(OR.sub.2).sub.z(R.sub.3).sub.x(OH).sub.y  (II)

in which formula (II): R.sub.1 is a linear or branched, saturated or unsaturated, cyclic or acyclic C.sub.1-C.sub.6 hydrocarbon-based chain substituted with a group chosen from the following groups: amine NH.sub.2 or NHR (R═C.sub.1-C.sub.20 and especially C.sub.1-C.sub.6 alkyl optionally substituted with a radical comprising a silicon atom, C.sub.3-C.sub.40 cycloalkyl or C.sub.6-C.sub.30 aromatic), or with a hydroxyl group, a thiol group, an aryl or aryloxy group which is unsubstituted or substituted, in particular with an amino group or with a C.sub.1-C.sub.4 aminoalkyl group; R.sub.1 possibly being interrupted with a heteroatom (O, S or NH) or a carbonyl group (CO), R.sub.2 and R.sub.3, which may be identical or different, represent a linear or branched alkyl group comprising from 1 to 6 carbon atoms, y denotes an integer ranging from 0 to 3, and z denotes an integer ranging from 0 to 3, and x denotes an integer ranging from 0 to 2,
with z+x+y=3.

The invention also relates to a process for straightening keratin fibers, especially the hair, using the compounds of formulae (I) and (II) with a straightening step using a straightening iron at a temperature of at least 150° C., preferably ranging from 150 to 250° C.

The present disclosure relates to free base and salt crystals of 2-(4-acetylbenzyl)-3-((4-fluorophenyl)amino)-5,7,7-trimethyl-7,8-dihydro-2H-imidazo[1,2-a]pyrazolo[4,3-e]pyrimidin-4(5H)-one, composition comprising the same and the method of making and using such free base and salt crystals.

A process for the manufacturing of fire suppressing crystals having a high Q-factor particle size distribution, said fire suppression crystals being intended for use as a fire suppressing additive in polymer compositions, the process comprising the steps; a) Preparing a mother liquor comprising water and a salt composition obtained in step c) or d), the temperature of said mother liquor being adjusted to 10-50 C. and comprising said salt composition to a level of at least 90% of saturation. Calcium hydroxide is added to the mother liquor to a level of at least 90% of saturation. b) Preparing an acid solution comprising water and two or more acids selected from the group consisting of; C.sub.2-C.sub.6 mono-, di- and/or tri-carboxylic acids, and optionally a phosphorous compound. The temperature of said acid solution is adjusted to 20-90 C. 31 and comprising acids to a level of at least 50% of saturation. c) The mother liquor, comprising calcium hydroxide, obtained from step a) is subjected to intense agitation under which the acid solution obtained from step b) is slowly added to said mother liquor allowing reaction to form salt until supersaturation is achieved while maintaining PH at a level securing that no unreacted acids remains after reaction, d) Crystals formed in the reaction of step c) is continuously or discontinuously removed from the reaction product of step c).

A process for the manufacturing of fire suppressing crystals having a high Q-factor particle size distribution, said fire suppression crystals being intended for use as a fire suppressing additive in polymer compositions, the process comprising the steps; a) Preparing a mother liquor comprising water and a salt composition obtained in step c) or d), the temperature of said mother liquor being adjusted to 10-50 C. and comprising said salt composition to a level of at least 90% of saturation. Calcium hydroxide is added to the mother liquor to a level of at least 90% of saturation. b) Preparing an acid solution comprising water and two or more acids selected from the group consisting of; C.sub.2-C.sub.6 mono-, di- and/or tri-carboxylic acids, and optionally a phosphorous compound. The temperature of said acid solution is adjusted to 20-90 C. 31 and comprising acids to a level of at least 50% of saturation. c) The mother liquor, comprising calcium hydroxide, obtained from step a) is subjected to intense agitation under which the acid solution obtained from step b) is slowly added to said mother liquor allowing reaction to form salt until supersaturation is achieved while maintaining PH at a level securing that no unreacted acids remains after reaction, d) Crystals formed in the reaction of step c) is continuously or discontinuously removed from the reaction product of step c).