Abstract: Process for producing molded foams from melamine/formaldehyde condensation products by subjecting melamine/formaldehyde precondensates to foaming under reduced pressure and subsequent irradiation.

Abstract: Foams and moldings comprising foamed support materials selected from the group consisting of polyurethane resins, polyester resins, epoxides and also fiber nonwovens, woven materials and open-cell, two- and three-dimensional networks composed of mineral, animal, vegetable and chemical (natural/synthetic) fibers or mixtures thereof comprising melamine/formaldehyde resins as foamable reactive resin.

Abstract: A composite foam comprising A) foamed particles comprising A1) from 25 to 95% by weight of styrene polymer(s), A2) if appropriate, a blowing agent, and A3) if appropriate, one or more additives, and B) an aminoplastic component comprising B1) from 1 to 65% by weight of cured, if appropriate modified and if appropriate foamed aminoplastic resin, B2) from 0.1 to 20% by weight of one or more flame-retardant organic phosphorus compounds having from 5 to 80% by weight phosphorus content (based on the respective compound), and/or expandable graphite, B3) if appropriate, one or more flame-retardant synergists for component B2), B4) if appropriate, a blowing agent, and B5) if appropriate, one or more additives, where—unless otherwise stated—the percentages by weight are based on the entirety of components A1), B1) and B2), is particularly suitable as insulation material.

Abstract: Production of polyalkylene carbonates via polymerization of carbon dioxide with at least one epoxide of the general formula (I): where R re mutually independently H, halogen, NO2, CN, COOR? or C1-20-hydrocarbon moiety, which can have substitution, where one of the moieties R can also be OH, and where two moieties R can together form a C3-5-alkylene moiety, R? is H or C1-20-hydrocarbon moiety, which can have substitution; n a zinc salt of C4-8-alkanedicarboxylic acids as catalysts, where a carboxylic acid or an acidic ion exchanger and a non-water-miscible organic solvent which dissolves the polyalkylene carbonate are admixed with the reaction mixture obtained after the reaction, and the organic phase is washed with water, and the polyalkylene carbonate is optionally obtained from the organic phase.

Abstract: Zinc salts of C4-8-alkanedicarboxylic acids, obtainable by reacting C4-8-alkanedicarboxylic acids with surface-modified zinc oxide particles, said surface-modified zinc oxide particles being obtainable by treatment of zinc oxide particles with organosilanes, silazanes and/or polysiloxanes and subsequent heat treatment and/or UV irradiation of treated zinc oxide particles, and the use thereof as polymerization catalysts for the preparation of polyalkylene carbonates.

Abstract: Novel melamine-formaldehyde foams comprising microcapsules built into the structure of the condensation products and also processes for the production thereof and uses thereof.

Abstract: The present invention relates to biodegradable polymer mixtures comprising i) 40% to 95% by weight, based on the total weight of components i to ii, of at least one polyester based on aliphatic or aliphatic and aromatic dicarboxylic acids and aliphatic dihydroxy compounds; ii) 5% to 60% by weight, based on the total weight of said components i to ii, of polyalkylene carbonate, particularly polypropylene carbonate; iii) 0% to 60% by weight, based on the total weight of said components i to iii, of at least one biodegradable homo- or copolyester selected from the group consisting of polylactic acid, polycaprolactone and polyhydroxyalkanoate, and/or of an inorganic or organic filler; iv) 0% to 10% by weight, based on the total weight of said components i to ii, of an epoxy-containing copolymer based on styrene, acrylic ester and/or methacrylic ester, and v) 0% to 15% by weight of an additive selected from the group consisting of lubricant, antiblocking agent, antistat, UV absorber, UV stabilizer, thermal stabil