RENEWABLE MONOMER AND POLYMER THEREOF Russian patent published in 2025 - IPC C07H9/04 C07H13/02 C07D307/77 C07H1/08 C08G63/42 C08G65/16 

FIELD: chemistry.

SUBSTANCE: present invention relates to a compound having structure (I), or (II), or (V)

where R¹ is -H, -CH₂OH or -CH(OH)CH₂OH; R² is -H, -OH or -CH₂OH; R³ is -H, -OH or -CH₂OH; R¹⁰ is hydrogen or a hydrocarbon fragment containing from 1 to 20 carbon atoms, wherein each hydrogen atom of said hydrocarbon fragment can optionally be substituted with C₁-C₄-alkyl group or a halogen atom; n is 0 or 1; p is 0 or 1; R is -ZF and wherein Z is a hydrocarbon moiety containing from 0 to 10 carbon atoms, optionally substituted with 1–4 C₁-C₄-alkyl groups or 1–4 halogen atoms, and F is -COOH, -CH(COOH)₂, -COOR⁴, -CHO, -CH(CHO)₂, -C₂H₃, -C₂H, -N₃, -NH₂, -NHR⁷, -OH, -CH(CH₂OH)₂, where R⁴ is C₁-C₄-alkyl group; R⁷ is C₁-C₄-alkyl group, provided that in compound (V) F is not -OH or -C₂H₃. Described also is a method of producing said compounds or a composition containing at least two different compounds said above, involving the following steps: a) providing a carbohydrate or lignocellulose-containing composition; b) adding an aldehyde, optionally containing at least one functional group selected from the group consisting of carboxylic acid, carboxamide, ether, alkyne, alkene, aldehyde, chloride, hydroxyl, azide, carboxylic ester, aldehyde, vinyl and amine, to a carbohydrate or a lignocellulose-containing composition to obtain a mixture; c) heating the mixture under acidic conditions; and d) separating, particularly extracting, the compounds. Also described is a method of producing a polymer, where at least one said compound is reacted with a compound of formula R⁹-L-R^9A, where L is selected from a group consisting of (CH₂)_O (VII), CO (VIII) and diphenylsulphone (IX)

R⁹ and R^9A are independently selected from a group consisting of -OR¹¹, OH, -NR⁸, -COOH, -COOR⁴ and a halogen atom; where R¹¹ is selected from the group consisting of aryl and alkyl, or R¹¹ from residue R⁹ and R¹¹ of residue R^9A together form a ring system; where the halogen atom is selected from the group consisting of fluorine, chlorine, bromine and iodine; where R⁸ is H or C₁-C₄-alkyl group; where R⁴ is C₁-C₄-alkyl group, preferably -CH₃; and o is integer from 2 to 10, in particular from 2 to 4. Described is the use of said polymers to produce sheets, fibres or moulded objects, particularly as a substitute for poly (ethylene terephthalate).

EFFECT: obtaining a monomer which can be subjected to polymerisation or copolymerisation to obtain a completely renewable polymer, preferably biodegradable, having good thermal and / or mechanical properties.

22 cl, 9 dwg