Patent ID: 7101931

Claim:
A granule made by the process of drying an inverse emulsion, dispersed in an external aqueous phase, wherein: (a) the inverse emulsion comprising an internal aqueous phase comprising at least one hydrophilic active substance, dispersed in an internal organic phase, said inverse emulsion comprising at least one nonionic surfactant, at least one amphiphilic block, or at least one cationic surfactant, and (b) the external aqueous phase comprising: at least one polyalkoxylated nonionic surfactant or at least one polvalkoxylated amphiphilic nonionic polymer, and at least one water-soluble or water-dispersible polymer provided in a solid form in the presence of a water content of at most 10% by weight relative to the weight of said polymer and whose glass transition temperature is greater than 25° C., wherein the water-soluble or water-dispersible polymer present in the external aqueous phase is a polymer (i) obtained from the polymerization of at least one monomer of formula (I): (R 1 )(R 1 )—C═C(R′ 1 )—COOH (I) in which formula the radicals R 1 , R′ 1 , which are identical or different, represent a hydrogen atom, a C 1 –C 10 hydrocarbon radical optionally comprising a —COOH group, a —COOH group; and of at least one monomer of formula (II): (R 2 )(R 2 )—C═CH 2 (II) wherein the radicals R 2 , which are identical or different, represent a linear or branched C 1 –C 10 hydrocarbon radical; or of at least one monomer of formula (III): CH 2 ═C(R 3 )—C(O)—O—[CH 2 CH(R 4 )O] m —[CH(R 5 )—CH 2 O] n —R 6 wherein: R 3 is a hydrogen atom or a methyl radical, R 4 and R 5 , which are identical or different, represent a hydrogen atom or an alkyl radical containing from 1 to 4 carbon atoms, R 6 is an alkyl, aryl, alkylaryl or arylalkyl radical containing from 1 to 30, n is between 2 and 100, and m is between 0 and 50, provided that n is greater than or equal to m and their sum is between 2 and 100.