摘要:
The present invention relates to the use of a compound of formula (1): wherein - R represents a linear or branched alkyl group comprising from 3 to 27 carbon atoms, said alkyl group being replaced by at least two hydroxyl groups, and optionally being able to contain one unsaturation; and R' is selected from the sugars or sugar alcohols;
摘要:
The present invention relates to the use of a compound having the following formula (I): (I) in which: - A 1 is a divalent alkylene radical comprising from 2 to 20 carbon atoms; - A 2 is a divalent alkylene radical comprising from 2 to 20 carbon atoms; - A 3 is chosen from the group consisting of the following divalent radicals: an alkylene comprising from 2 to 600 carbon atoms; and an arylene comprising from 6 to 30 carbon atoms; - X 1 , X 3 and X 4 are ‐O‐ or ―NH‐; - X' 2 is chosen from the group consisting of: ‐S‐, ‐CH 2 ‐ and a bond; and - n and m are an integer of between 1 and 1000; for preparing additives in a polyester, polyvinyl chloride, polyurethane, polyamide, poly(alkyl acrylate), poly(alkyl methacrylate), polystyrene or polyolefin matrix.
摘要:
The present invention relates to the use of a compound of formula (I): wherein: —R represents —OH or —NH2; —A1 represents a divalent alkylene radical, straight or branched, having from 2 to 20 carbon atoms; —A2 represents a divalent alkylene radical, straight or branched, having from 1 to 20 carbon atoms; —X1 and X2 represent, independently of each other, —NH— or −O—; —A3 represents a divalent alkylene radical, straight or branched, having from 1 to 10 carbon atoms; —Z represents a hydrogen or a group of formula (A′): wherein A1, A3 and R are as defined above in formula (I), for the preparation of a polymer chosen among polyurethane, polyester and polyamide.
摘要:
The present invention concerns a polymer comprising: - at least one repetitive unit (V) having the following formula (T): - and preferably at least one, preferably at least two, repetitive unit(s) (U) having the following formula (D):
摘要:
The present invention relates to a method for preparing a dispersion of polyurethane particles, which comprises the following steps: a) placing at least one (poly)isocyanate monomer and at least one polyol monomer of formula (I): (I) in the presence of an aqueous phase comprising at least one surfactant and an organic phase comprising at least one polymerisation catalyst, thus obtaining a two-phase mixture; b) emulsifying the two-phase mixture obtained in step a), thus obtaining a miniemulsion of oil-in-water, formed by droplets of said organic phase, with a mean size of 50 nm to 500 nm, dispersed in said aqueous phase; and c) polymerising the (poly)isocyanate and polyol monomers of formula (I), thus obtaining solid particles of polyurethane, with a mean size of 50 nm to 500 nm, dispersed in said aqueous phase. Figure: none.
摘要:
The invention relates to a compound of formula (I): wherein A 1 and A 1 ' are independently from each other a linear or branched alkylene radical comprising from 1 to 20 carbon atom(s); A 2 is in particular a linear or branched alkylene radical comprising from 1 to 200 carbon atom(s); A 3 is H or a linear or branched alkyl radical comprising from 1 to 15 carbon atom(s) and R 1 and R 1 ' are independently from each other H or a linear or branched alkyl radical comprising from 1 to 20 carbon atom(s). The present invention concerns the compounds of formula (I), their preparation and their uses, in particular for the preparation of poly(hydroxyurethane)s.