摘要:
The invention relates to copolymers containing, incorporated by polymerization, a1) 30 to 90 wt % of at least one monoethylenically unsaturated C3-C8-carboxylic acid, an anhydride or a salt thereof; a2) 3 to 60 wt % of at least one monomer containing sulfonic acid groups; a3) 3 to 60 wt % of at least one non-ionic monomer of the formula I H2C=C (R1) (CH2)xO [R2-O]o-R3 (I), in which R1 is hydrogen or methyl, R2 is identical or different, linear or branched C2-C6-alkylene residues, which can be arranged in blocks or statistically, and R3 is hydrogen or a linear-chain or branched C1-C4-alkyl residue, x is 0, 1 or 2, and o is a natural number from 3 to 50; a4) 0 to 30 wt % of one or more additional ethylenically unsaturated monomers, which can be polymerized with a1), a2), and a3), wherein the sum of a1), a2), a3) and a4) equals 100 wt %.
摘要:
The present invention relates to a method for the continuous production of a polymer by radical polymerization, wherein at least three materials are mixed with microstructures in one or more mixers and are then polymerized in at least one reaction zone.
摘要:
Method for producing (meth)acrylic acid esters (E) of polyalkoxy group-containing alcohols by reacting polyalkoxy-group containing alcohols (P) of formula (I), where R1 represents hydrogen, a hydroxy group or a linear or branched, saturated or unsaturated, alcohol having from 1 to 30 C atoms, R 2 , R 3 represent independently of one another H or methyl, and m and n represent independently of one another a whole integer between 0 and 100, with the proviso that m and n may not simultaneously be 0, in the presence of at least one basic catalyst (K) having a pK B value not above 7.0, with at least one sterically hindered polymerization inhibitor comprising a (meth) acrylic acid anhydride (A), characterized in that following completion of the reaction the reaction mixture is quenched with a C 1 -C 6 -alkanol.
摘要:
The invention relates to a polymer blend in solid or aqueous form containing, relative to the polymer content, (A) 5 to 95 wt% of a water-soluble or water-dispersible polymer with an average molecular weight of 1000 to 20000 g/mol consisting of (a1) 20 to 80 wt% of at least one monomer, selected from the group consisting of C 2 -C 8 olefins, allyl alcohol, isoprenol, C 1 -C 4 alkyl vinyl ethers and vinyl esters of C 1 -C 4 monocarboxylic acids, (a2) 20 to 80 wt% of at least one monoethylenically unsaturated C 3 -C 8 carboxylic acid, an anhydride or a salt thereof, (a3) 0 to 50 wt% of one or more monomers containing sulphonic acid groups, (B) 5 to 95 wt% of a water-soluble or water-dispersible polymer with an average molecular weight of 1000 to 50000 g/mol consisting of (b1) 30 to 100 wt% of at least one monoethylenically unsaturated C 3 -C 8 carboxylic acid, an anhydride or a salt thereof, (b2) 0 to 70 wt% of one or more monomers containing sulphonic acid groups, (b3) 0 to 70 wt% of at least one non-ionic monomer of formula (I), H 2 C=C(R 1 )(CH 2 ) x O[R 2 -O] o -R 3 , wherein R 1 represents hydrogen or methyl, R 2 represents the same or different, linear or branched C 2 -C 6 alkylene groups, which can be arranged block-wise or statistically, and R 3 represents hydrogen or a straight-chain or branched C 1 -C 4 alkyl group, x representing 0, 1 or 2 and o for a number between 3 and 50.
摘要:
The invention relates to copolymers which comprise, in copolymerized form, a1) 30 to 90% by weight of at least one monoethylenically unsaturated C3-C8-carboxylic acid or of an anhydride or water-soluble salt thereof, a2) 3 to 60% by weight of at least one monomer comprising sulpho groups, a3) 3 to 60% by weight of at least one nonionic monomer of the formula (I) H2C=C(R1)COO-[R2-O]0 -R3 (I), in which R1 is hydrogen or methyl, R2 are identical or different, linear or branched C2-C6-alkylene radicals which may be arranged in blocks or randomly, and R3 is hydrogen or a straight-chain or branched C1-C4-alkyl radical and o is a natural number from 3 to 50, a4) 0 to 30% by weight of one or more further ethylenically unsaturated monomers which are polymerizable with a1), a2) and a3), where the sum of a1), a2), a3) and a4) adds up to 100% by weight.
摘要:
Acrylate-acrylamide-AMPS terpolymer as dispersant for agrochemical formulations The present invention relates to a composition comprising an agrochemical active substance and a random terpolymer which comprises the monomers i), ii), iii) and optionally further monomers incorporated into the polymer, where monomer i) comprises an olefinically unsaturated monomer comprising a sulfonic acid group and/or a salt thereof, monomer ii) comprises (meth)acrylamide and/or an N-substituted derivative thereof, and monomer iii) comprises a monoethylenically unsaturated C 3 -C 8 -carboxylic acid, an anhydride and/or a salt thereof. The invention furthermore relates to a method of preparing this composition; to the use of this composition for dispersing agrochemical active substances; to a method of controlling phytopathogenic fungi and/or undesired plant growth and/or undesired insect or mite attack and/or for regulating the growth of plants, wherein the composition is allowed to act on the respective pests, their environment or the crop plants to be protected from the respective pest, on the soil and/or on undesired plants and/or on the crop plants and/or on their environment; and furthermore to seed comprising the composition.