Abstract: The invention relates to a composition comprising: a) one or more polyhydroxyalkanoate (PHA) copolymers which contain, and preferably consist of, at least two different repeating polymer units chosen from the units (A) and (B) below, and also the optical or geometrical isomers thereof and the solvates thereof such as hydrates: -[-0-CH(R1)-CH2-C(0)-]- unit (A) -[-0-CH(R2)-CH2-C(0)-]- unit (B) in which polymer units (A) and (B): R1 represents a hydrocarbon-based chain chosen from: i) branched (C5-C9)alkyl, ii) (C10-C30)alkyl; iii) linear or branched (C5-C30)alkenyl; iv) linear or branched (C5-C30)alkynyl; v) (hetero)aryl; vi) (hetero)cycloalkyl; preferably the group i) (C10-C20)alkyl, or iii) (C8-C20)alkenyl; R2 represents a cyclic or non-cyclic, linear or branched, saturated or unsaturated hydrocarbon-based group, comprising from 1 to 30 carbon atoms; and b) a fatty medium comprising one or more fatty substances; preferably, the fatty substance(s) are liquid at 25°C and at atmospheric pressure; it being unders

Abstract: The present invention relates to a cosmetic composition comprising a) one or more polyhydroxyalkanoate (PH A) copolymers which contain, and preferably consist of, at least two different repeating polymer units chosen from the units (A) and (B) below, and also the optical or geometrical isomers thereof, the organic or mineral acid or base salts thereof, and the solvates thereof such as hydrates: -[-0-CH(R1)—CH2—C(0)-]- unit (A) -[-0-CH(R2)—CH2—C(0)-]- unit (B) in which polymer units (A) and (B): —R1 represents a hydrocarbon-based chain chosen from i) linear or branched (C5-C28)alkyl, ii) linear or branched (C6-C28)alkenyl, iii) linear or branched (C6-C28)alkynyl; preferably, the hydrocarbon-based group is linear; said hydrocarbon-based chain being optionally substituted and/or interrupted with atoms or groups as described in the description; —R2 represents a cyclic or non-cyclic, linear or branched, saturated or unsaturated hydrocarbon-based group, comprising from 3 to 30 carbon atoms; b) a fatty medium compri

Abstract: A multi-epoxidized biphenyl compound has the formula (I) below wherein R, R1, R2 and R3 are as defined in the description, as well as mixtures of at least two of the compounds. These multi-epoxidized biphenyl compounds are fully suitable as main constituents of thermosetting epoxy resins, i.e. as polyepoxides precursors. They are beneficial substitutes for bisphenol A diglycidyl ether.

Abstract: A difunctional biphenyl compounds corresponding to formula (I) wherein Alk, Alk? and R are as defined in the description. These compounds are suitable as hardeners for thermosetting resins, especially epoxy resins.

Abstract: A multi-epoxidized biphenyl compound has the formula (I) below wherein R, R1, R2 and R3 are as defined in the description, as well as mixtures of at least two of the compounds. These multi-epoxidized biphenyl compounds are fully suitable as main constituents of thermosetting epoxy resins, i.e. as polyepoxides precursors. They are beneficial substitutes for bisphenol A diglycidyl ether.

Abstract: A difunctional biphenyl compounds corresponding to formula (I) wherein Alk, Alk? and R are as defined in the description. These compounds are suitable as hardeners for thermosetting resins, especially epoxy resins.