摘要:
A composition including a graft copolymer, having: a linear trunk including at least one non-aromatic vinyl polymer or an unsaturated polyolefin; and at least two grafts attached to said trunk via a chemical bond, each graft having a conjugated polymer, characterized in that said composition further includes: fullerenes and a conjugated polymer; or carbon and/or graphene nanotubes. Also, a photovoltaic module incorporating such a composition, and to the use of said composition for the same purposes. Finally, methods for synthesizing the molecules forming all or part of the composition.
摘要:
A composition of an active film of an organic photovoltaic cell, including: an electron-donor material having a conjugated polymer; and an electron-acceptor material having a polymer, wherein the active film comprises a copolymer with a linear structure including: two to five blocks, at least two blocks of which have different chemical natures; two consecutive blocks having different chemical natures; each block having a molar mass of between 500 g/mol and 50,000 g/mol. Also, an organic-cell-based photovoltaic module incorporating such a composition and the use of this composition for the same purposes.
摘要:
A composition including a graft copolymer, having: a linear trunk including at least one non-aromatic vinyl polymer or an unsaturated polyolefin; and at least two grafts attached to said trunk via a chemical bond, each graft having a conjugated polymer, characterized in that said composition further includes: fullerenes and a conjugated polymer; or carbon and/or graphene nanotubes. Also, a photovoltaic module incorporating such a composition, and to the use of said composition for the same purposes. Finally, methods for synthesizing the molecules forming all or part of the composition.
摘要:
The present invention relates to a compound with the following formula (I) where: R1 is particularly a straight or branched alkyl group, a is a single or double bond; R2 is particularly a hydrogen atom; R3 and R5 are a hydrogen atom when a is a single bond, and absent when a is a double bond; R4 is a hydrogen atom or an ORb group, where Rb is a hydrogen atom or an alkyl group including 1 to 12 atoms of carbon, and A1 is a divalent alkylene radical.
摘要:
The present invention relates to a method for preparing polyols of formula (I″) R′1 being H or an alkyl group, R″ being especially an alkyl group, A1, being an alkylene radical and R3, are being especially a group -A2-O—Y′, A2 being an alkylene radical and Y′ being especially H, said method especially comprising a step of epoxidation of a compound of formula R″1 being H or an alkyl group, At being defined as above in formula (I″) and R4 being especially a group -A2-O—Y1′, A2 being defined as above in formula (I″) and Y′1 being especially H, in order to obtain a compound of formula A1 being defined as above, R′″1 being H or an alkyl group and R5 being especially a group of formula -A2-O—Y2′, A2 being as defined above in formula (I″) and Y′2 being especially H.
摘要:
The present invention relates to the use of a compound of formula (I): wherein: R represents a linear or branched alkyl group, comprising from 3 to 27 carbon atoms, said alkyl group being substituted with at least two hydroxyl groups, and which may optionally contain one or more unsaturations; and R′ is selected from sugars or sugar-alcohols; for preparing polyurethanes and polyesters.
摘要:
The present invention relates to the use of a compound of formula (I): wherein: R represents a linear or branched alkyl group, comprising from 3 to 27 carbon atoms, said alkyl group being substituted with at least two hydroxyl groups, and which may optionally contain one or more unsaturations; and R′ is selected from sugars or sugar-alcohols; for preparing polyurethanes and polyesters.
摘要:
A method for preparing a polyol having the following general formula (I): the method including a step of transesterification followed by a step of thiolation. The present invention also relates to polyols with the formula (T) such as those defined above.
摘要:
Process for the production of a superhydrophobic fibrous substrate. The process involves preparing hydrophobic core-shell microparticles, the microparticles having a core of polyurethane and a shell of polydimethylsiloxane or of polybutadiene, then depositing a liquid suspension of the microparticles on the fibrous substrate. Superhydrophobic fibrous substrates of this kind are useful for the manufacture of textiles intended for apparel, or of coatings for printing.
摘要:
Novel compounds of formula (1) wherein: A is especially a linear or branched divalent alkylene radical having between 1 and 10 carbon atoms, and Y is especially a hydrogen atom.