Abstract: The present invention relates to a composition comprising at least one active ingredient with low aqueous solubility, said active ingredient being present therein in a form noncovalently associated with nanoparticles formed by at least one POM polymer of formula (I), and in which said active ingredient is present in a proportion of at least 5 ?mol/g of POM. It is also directed towards the use of such nanoparticles, noncovalently associated with an active ingredient, with a view to increasing the aqueous solubilization of said active ingredient.

Abstract: The present invention relates to novel materials based on biodegradable polyamino acids that are useful especially for the vectorization of active principle(s) (AP). The invention further relates to novel pharmaceutical, cosmetic, dietetic or phytosanitary compositions based on these polyamino acids. The object of the invention is to provide a novel polymer starting material that is capable of being used for the vectorization of AP and makes it possible on the one hand to achieve high polymer/AP ratios, and on the other hand optimally to satisfy all the specifications required in the case in point: biocompatibility, biodegradability, ability to associate easily with numerous active principles or to solubilize them, and ability to release these active principles in vivo.

Abstract: The invention concerns novel biodegradable polyaminoacid materials, useful in particular for vectoring active principle(s). The invention also concerns novel pharmaceutical, cosmetic dietetic or phytosanitary compositions based on said polyaminoacids. The invention aims at providing a novel polymer raw material, capable of being used for vectoring active principles and enabling optimal fulfillment of all specified requirements: biocompatibility, biodegradability, easy and inexpensive transformation into particles vectoring active principles, the particles being themselves capable of forming colloidal suspensions, of being easily associated with numerous active principles, and of releasing said active principles in vivo.

Abstract: The invention relates to novel materials based on biodegradable polyamino acids that are useful for vectorizing active principle(s)(AP). The aim of the invention is to supply a new polymeric raw material that is used for vectorizing AP and optimally fulfills all requirements concerning biocompatibility, biodegradability, the ability to be easily associated with numerous active principles or solubilize the active principles and to release the active principles in vivo. Such polymers can also be readily and economically transformed into particles vectorizing active principles according to the grafting rate of the hydrophobic groups, said particles being able to form stable aqueous colloidal suspensions.

Abstract: The invention concerns novel biodegradable polyaminoacid materials, useful in particular for vectoring active principles(s). The invention also concerns novel pharmaceutical, cosmetic dietetic or phytosanitary compositions based on said polyaminoacids. The invention aims at providing a novel polymer raw material, capable of being used for vectoring active principles and enabling optimal fulfillment of all specified requirements: biocompatibility, biodegradability, easy and inexpensive transformation into particles vectoring active principles, said particles being themselves capable of forming colloidal suspensions, of being easily associated with numerous active principles, and of releasing said active principles in vivo.

Abstract: The invention relates to novel materials based on biodegradable homopolyamino acids and which can be used for the vectorization of (an) active ingredient(s) (AI). The invention also relates to novel pharmaceutical, cosmetic, dietetic or phytosanitaty compositions based on homopolyamino acids. The invention can produce a novel polymer raw material which can be used for the vectoiization of Al that can optimally be: biocompatible, biodegradable, capable of becoming easily associated with a large number of active ingredients or solubilizing them and releasing the active ingredients in vivo. According to the present invention, which primarily relates to linear homopolyamino acids having aspartic or glutamic units and whose attachments can include hydrophobic groups having 8-30 carbon atoms. The homopolymers are amphiphilic and anionic and can easily be transformed at low cost into particles for the vectorization of active ingredients. The particles can form stable aqueous colloidal suspensions.

Abstract: The invention concerns novel materials based on biodegradable branched polyaminoacids particularly useful for transporting active principle(s). The invention also concerns novel pharmaceutical, cosmetic, dietetic or phytosanitary compositions based on polyaminoacids. The invention aims at providing a novel polymeric material, capable of being used for transporting active principle(s) and enabling all the required relevant specifications to be optimally satisfied: biocompatibility, biodegradability, easy ability to be combined with a large number of active principles or to solubilize same, and to release said active principles in vivo. This is achieved by the present invention which firstly concerns branched polyaminoacids comprising aspartic acid units and or glutamic acid units, and which bear hydrophobic groups including 8 to 30 carbon atoms.

Abstract: The present invention relates to novel pharmaceutical formulations for the release of an active principle (AP) over a sustained period of time of several days, or even several weeks. The invention relates, in a first aspect, to a liquid formulation comprising at least one active principle (AP) and an aqueous suspension based on colloïdal particles of a polymer (PO), wherein said formulation satisfies the following four conditions: (a) the polymer (PO) is a polyamino acid comprising glutamic residues, wherein some glutamic residues each carry a pendant cationic group (CG), said cationic groups being identical or different from one another, and other glutamic residues each carry a pendent hydrophobic group (GH), said hydrophobic groups (GH) being identical or different from one another, (b) the pHf value of the pH of said formulation is between 3.0 and 6.

Abstract: The present invention relates to novel biodegradable materials based on modified polyamino acids that are useful in particular in the vectorization of active principle(s) (APs). The invention is also directed to novel pharmaceutical, cosmetic, health-food or plant-protection compositions based on these polyamino acids. The aim of the invention is to provide a novel polymeric starting material which can be used for AP vectorization and which satisfy all the requirements: biocompatibility, biodegradability, ability to easily associate with or dissolve numerous active principles and to release these active principles in vivo. This goal is achieved by the present invention, which relates to novel polyglutamates modified by cationic groups, which, if they can be deprotonated, exhibit a pKa equal to or greater than 7, and by hydrophobic groups comprising from 8 to 30 carbon atoms.

Abstract: The present invention relates to novel particles comprising polyelectrolyte polymers which are transporters of active principle (AP), in particular protein and peptide active principle, and to novel modified-release pharmaceutical formulations comprising said AP microparticles. These novel particles loaded with AP release the AP over a prolonged period of time of several days, or even several weeks.

Abstract: The present invention relates to novel microparticles formed of amphiphilic polyamino acids which transport active principle(s), AP(s), in particular protein and peptide active principle(s), and to novel modified-release pharmaceutical formulations comprising said AP microparticles. The aim of the invention is to develop novel microparticles, charged with AP, obtained by aggregation of nanoparticles of amphiphilic polyamino acids and having improved properties, in particular in the dry solid form, with regard to their ability to be dispersed and, concerning the reconstituted suspension, its stability and its ability to be easily handled and injected. The invention relates firstly to microparticles of amphiphilic polyamino acid (PO) comprising at least one AP (associated noncovalently) which spontaneously form a colloidal suspension of nanoparticles in water, at pH 7.0, under isotonic conditions; which microparticles a.

Abstract: The present invention relates to novel compounds of the naphthopyran type which have an annelated carbocycle in position 5,6. These compounds are of formula (I) given below: in which A is an alicyclic ring which is optionally annelated with an aromatic ring and in which two adjacent R3 can together form at least one ring, for example a benzo group. These compounds (I) possess interesting photochromic properties. The invention also relates to the method of preparing these compounds (I), as well as their applications as photochromes and compositions and (co)polymer matrices comprising them.

Abstract: The invention relates to novel materials based on biodegradable homopolyamino acids and which can be used for the vectorization of (an) active ingredient(s) (AI). The invention also relates to novel pharmaceutical, cosmetic, dietetic or phytosanitary compositions based on said homopolyamino acids. The aim of the invention is to produce a novel polymer raw material which can be used for the vectorization of AI and which meets all specifications in an optimum manner: biocompatibility, biodegradability, the ability to become easily associated with a large number of active ingredients or to solubilize them and to release said ingredients in vivo. According to the present invention, which primarily relates to linear homopolyamino acids having aspartic or glutamic units and whose extremities include hydrophobic groups having 8-30 carbon atoms. Said homopolymers are amphiphilic and anionic and can easily be transformed at low cost into particles for the vectorization of active ingredients.

Abstract: The invention relates to novel biodegradable polyamino acid based materials which can be used for the vectorization of (an) active substance(s) (PA). The invention also relates to novel pharmaceutical, cosmetic, dietary or phytosanitary compositions based on said polyamino acids. The present invention which primarily relates to polyamino acids comprising aspartic units and/or glutamic unites some of which bearing at least one graft, characterized in that at least one of said grafts is joined to an aspartic or glutamic unite by means of an amide bond and in that at least one of said grafts comprises at least one oligoamino acid which is Leu, and/or Ileu, and/or Val, and/or Phe based. Said amide function ensure better stability with respect to hydrolysis than similar products of prior art. Advantageously, said polymers can be easily and economically transformed into active substance vectorization particles, said particles being able to form stable aqueous colloidal suspensions.

Abstract: Disclosed are novel benzo-, naphtho- and phenanthrochromenes substituted by carbamated or ureated phenyls having the following general formula (I): wherein R1 represents a group their preparation, photochromic compositions and articles containing them. This family of compounds have interesting and useful photochromic properties, especially in terms of absorption band and discoloration speed.

Abstract: The invention relates to novel materials based on biodegradable polyamino acids that are useful for vectorizing active principle/s (AP). The aim of the invention is to supply a new polymeric raw material that is used for vectorizing AP and optimally fulfills all requirements concerning biocompatibility, biodegradability, the ability to be easily associated with numerous active principles or solubilize said active principles and to release the active principles in vivo. Said polymers can also be readily and economically transformed into particles vectorizing active principles according to the grafting rate of the hydrophobic groups, said particles being able to form stable aqueous colloidal suspensions.

Abstract: The invention relates to novel materials based on biodegradable polyamino acids, particularly useful for the vectorisation of active principals (PA). The invention further relates to novel, pharmaceutical, cosmetic, dietary or phytosanitary compositions based on said polyamino acids. The aim of the invention is to provide a novel polymeric raw material, for use in the vectorisation of PA and with an optimal match for all the requirements of the type: biocompatibility, biodegradability, stability, ability to easily associate with numerous active principals or to solubilise the same and to liberate said active principals in vivo. Said aim is achieved with polyamino acids comprising aspartic and/or glutamate units, some of which carry at least one graft, characterised in that at least one of said grafts is bonded to an aspartic or glutamate unit by means of an amino acids spacer based on Leu, and/or Ileu, and/or Val, and/or Phe and a hydrophobic group with C6-C30 is connected by an ester bond to the spacer.

Abstract: The invention concerns novel biodegradable polyaminoacid materials, useful in particular for vectoring active principle(s). The invention also concerns novel pharmaceutical, cosmetic, dietetic or phytosanitary compositions based on said polyaminoacids. The invention aims at providing a novel polymer raw material, capable of being used for vectoring active principles and enabling optimal fulfillment of all specified requirements: biocompatibility, biodegradability, easy and inexpensive transformation into particles vectoring active principles, said particles being themselves capable of forming colloidal suspensions, of being easily associated with numerous active principles, and of releasing said active principles in vivo.

Abstract: Disclosed are novel benzo-, naphtho- and phenanthrochromenes substituted by carbamated or ureated phenyls having the following general formula (I): wherein R1 represents a group their preparation, photochromic compositions and articles containing them. This family of compounds have interesting and useful photochromic properties, especially in terms of absorption band and discoloration speed.

Abstract: The present invention relates to novel compounds of the naphthopyran type with a fused heterocycle in the 5,6-position. These compounds have formula (I) or (II) given below: These compounds (I) or (II) have valuable photochromic properties. The invention further relates to their preparation, to their applications as photochromic substances, and to the (co)polymer compositions and matrices containing them.