摘要:
Thermoplastic molding compositions compriseA) from 30 to 97% by weight of a polyester,B) from 1 to 30% by weight of melamine cyanurate,C) from 1 to 30% by weight of at least one phosphorus-containing flame retardant which contains phosphorus in the valence state -1, -2 or -3,D) from 0 to 60% by weight of other additives and processing aids,where the total of the percentages by weight of components A) to D) is 100%.
摘要:
Thermoplastic molding compositions comprise A) from 30 to 96% by weight of a polyester B) from 1 to 30% by weight of melamine cyanurate C) from 1 to 30% by weight of at least one phosphorus-containing flame retardant D) from 0.01 to 5% by weight of at least one ester or amide derived from a saturated or unsaturated aliphatic carboxylic acid having from 10 to 40 carbon atoms and a saturated aliphatic alcohol or &mine having from 2 to 40 carbon atoms E) from 0 to 60% by weight of other additives and processing aids where the total of the percentages by weight of components A) to E) is 100%.
摘要:
The present invention relates to copolymers obtainable by free-radical polymerization of i) 10% to 90% by weight, based on the total weight of components i to iv, of at least one monomer selected from the group consisting of a C8-C30 alkyl (meth)acrylate, C8-C30 vinyl ester, C8-C30 vinyl ether, C8-C30 olefin, and triglyceride of unsaturated C8-C30 carboxylic acids; ii) 0.5% to 70% by weight, based on the total weight of components i to iv, of a double-bond-containing monomer having at least one epoxide, isocyanate, carbodiimide, silane, β-dicarbonyl, oxazoline, or anhydride group; iii) 0% to 75% by weight, based on the total weight of components i to iv, of one or more monomers selected from the group consisting of vinylaromatic, C1-C7-alkyl (meth)acrylate, ethylenically unsaturated acetophenone derivative or benzophenone derivative, C1-C7 vinyl ester, C1-C7 vinyl ether, ethylenically unsaturated nitrile, ethylenically unsaturated amide, vinyl halide, C2-C7 olefin, cyclic lactam, and mixtures of these monomers; and iv) 0% to 10% by weight, based on the total weight of components i to iv, of a free-radically polymerizable monomer with carboxylic acid, sulfonic acid or phosphonic acid groups or salts thereof. The invention further relates to polymer mixtures comprising these copolymers and also to the use of the copolymers as chain extenders, compatibilizers and/or hydrolysis stabilizers, to produce paper and cardboard, for surface finishing in the paper, textile, and leather industries, and in adhesives.
摘要:
The present invention provides a copolymer obtainable by condensation of i) 90 to 99.5 mol %, based on components i to ii, of succinic acid; ii) 0.5 to 10 mol %, based on components i to ii, of one or more C2-C8 dicarboxylic acids; iii) 100 mol %, based on components i to ii, of 1,3-propanediol or 1,4-butanediol, and having a DIN 53728 viscosity number in the range from 100 to 450 mL/g. The invention further provides a process for producing the copolymers, polymer blends comprising these copolymers and also for the use of these copolymers.
摘要:
The invention relates to polyester mixtures, comprising A) from 30 to 98% by weight of at least one thermoplastic aromatic polyester, B) from 0.01 to 15% by weight of B1) at least one highly branched or hyperbranched polycarbonate, or B2) at least one highly branched or hyperbranched polyester or a mixture of these C) from 1 to 20% by weight of a polyester based on aliphatic and aromatic dicarboxylic acids and on an aliphatic dihydroxy compound, D) from 0 to 60% by weight of other additives, where the total of the percentages by weight of components A) to D) is 100%; and to their use, and also to fibers, foils, and moldings obtainable from these polyester mixtures.
摘要:
The present invention relates to novel active substance compositions for plant protection in the form of finely divided active-substance-containing particles which compositions comprise a) at least one plant protectant; b) at least one polymer P which is not soluble in water and which is degradable by enzymatic hydrolysis, in an amount of at least 20% by weight based on the total amount of the components of the active-substance-comprising particles, and c) at least one hydrolase (EC 3), where at least 90% by weight of the active substance-containing particles of the active substance composition do not exceed a diameter of 500 μm (D90-value) and where components a), b) and c) account for at least 30% by weight of the active substance particles. The invention also relates to a process for their preparation, and to the use of the active substance compositions for the treatment of plants, soils and of seed.
摘要:
A process for preparing an aqueous polymer dispersion, in which, in an aqueous medium, in a first reaction stage, a hydroxycarboxylic acid compound is reacted in the presence of an enzyme and of a dispersant, and also, if appropriate, of a low water solubility organic solvent and/or of an ethylenically unsaturated monomer, to give a polyester, and thereafter, in the presence of the polyester, in a second reaction stage, an ethylenically unsaturated monomer is free-radically polymerized.
摘要:
The use is described of an amorphous polyester as polymer base for gum bases. The application also relates to gum bases comprising such polyesters.
摘要:
The continuous process for producing polyamides by reacting at least one aminonitrile with water comprises the following steps: (10) reacting at least one aminonitrile with water at a temperature of from 200 to 290° C. at a pressure of from 40 to 70 bar in a flow tube containing a Brönsted acid catalyst selected from a beta-zeolite, sheet-silicate or metal oxide catalyst in the form of a fixed bed, (11) diabatically or adiabatically expanding the reaction mixture from step (1) into a first separation zone to a pressure of from 20 to 40 bar, the pressure being at least 10 bar lower than the pressure in step (1), and to a temperature within the range from 220 to 290° C. by flash evaporation and removal of ammonia, water and any aminonitrile monomer and oligomer, (12) further reacting the reaction mixture from step (2) in the presence of water at a temperature of from 200 to 290° C. and a pressure of from 25 to 55 bar and in the presence or absence of a Brönsted acid catalyst selected from a beta-zeolite, sheet-silicate or metal oxide catalyst in the form of a fixed bed, (13) diabatically or adiabatically expanding the reaction mixture from step (3) into a second separation zone to a pressure of from 0.01 to 20 bar, the pressure being at least 20 bar lower than the pressure in step (3), and to a temperature within the range from 220 to 290° C. by flash evaporation and removal of ammonia, water and any aminonitrile monomer and oligomer.
摘要:
Biodegradable polyesters P1 obtainable by reaction of a mixture consisting essentially of(a1) a mixture consisting essentially offrom 35 to 95 mol % of adipic acid or ester-forming derivatives thereof or mixtures thereof,from 5 to 65 mol % of terephthalic acid or ester-forming derivatives thereof or mixtures thereof, andfrom 0 to 5 mol % of a sulfonate compound,the sum of the individual mole percentages being 100 mol %, and(a2) a dihydroxy compound selected from the group consisting of C.sub.2 -C.sub.6 -alkanediols and C.sub.5 -C.sub.10 -cycloalkanediols,the molar ratio of (a1) to (a2) being chosen within the range from 0.4:1 to 1.5:1,with the proviso that the polyesters P1 have a molecular weight (M.sub.n) within the range from 5000 to 50,000 g/mol, a viscosity number within the range from 30 to 350 g/ml (measured in 50:50 w/w dichlorobenzene/phenol at a concentration of 0.5% by weight of polyester P1 at 25.degree. C.) and a melting point within the range from 50 to 170.degree. C. and with the further proviso that the polyesters P1 are prepared using from 0.01 to 5 mol %, based on the molar quantity used of component (a1), of a compound D having at least three groups capable of ester formation,and further biodegradable polymers and thermoplastic molding compositions, processes for the preparation thereof, use thereof for producing biodegradable moldings, and adhesives, biodegradable moldings, foams and blends with starch obtainable from the polymers or molding compositions of the present invention.