Abstract:
The present invention relates to a method for producing shrink films, comprising: A) 20 to 90 wt % of a biodegradable aliphatic aromatic polyester; B) 10 to 80 wt % of one or more polymers selected from the group comprising: polylactic acid, polypropylene carbonate, polycaprolactone, polyhydroxyalkanoate, chitosan, gluten, and one or more aliphatic/aromatic polyesters such as polybutylene succinate, polybutylene succinate-adipate, or polybutylene succinate-sebacate, polybutylene terephthalate-coadipate; and C) 0 to 2 wt % of a compatibility agent, wherein a blow up ratio of less than or equal to 4:1 is selected.
Abstract:
The invention relates to a method for recycling paper products glued and/or coated with polymers, wherein the paper products glued and/or coated with polymers are placed in an aqueous wastepaper suspension, said wastepaper suspension a) is broken down in the presence of at least one hydrolase, b) is broken down in an alkaline medium, and/or c) is treated in a de-inking process in an alkaline medium, and the polymers are subsequently separated from the wastepaper suspension, wherein the polymers are biodegradable polymers.
Abstract:
The invention relates to a method for producing polymer mixtures from i) polypropylene carbonate and ii) at least one other polymer, comprising the steps of: (a) converting propylene carbonate with carbon dioxide in the presence of zinc, cobalt or lanthanide catalysts - in excess propylene carbonate or in an aprotic, water-immiscible solvent; (b) adding an aqueous acid solution to the reaction mixture after completion of the conversion; (c) separating the aqueous phase; (d) washing the residual organic phase with water; (e) adding the polymer component ii); (f) degassing and drying the obtained polymer mixture and optionally removing the aprotic, water-immiscible solvent; and (g) granulating the polymer melt.
Abstract:
The present invention relates to aliphatic-aromatic polyesters comprising: i) 40 to 60 mol %, based on components i to ii, of one or more dicarboxylic acid derivatives selected from the group consisting of: sebacic acid, azelaic acid and brassylic acid; ii) 40 to 60 mol %, based on components i to ii, of a terephthalic acid derivative; iii) 98 to 102 mol %, based on components i to ii, of 1,3-propanediol or 1,4-butanediol and iv) 0.01 to 5 wt.-%, based on the total weight of components i to iii, of a chain extender and/or cross-linking agent selected from the group consisting of: a polyfunctional isocyanate, isocyanurate, oxazoline, carboxylic acid anhydride, epoxide and/or an at least trifunctional alcohol or an at least trifunctional carboxylic acid. The invention also relates to a method for manufacturing the polyesters, to polyester mixtures comprising said polyesters and to the use of said polyesters and polyester mixtures.
Abstract:
The invention relates to foam layers which are produced from a biodegradable polyester mixture,comprising i) 30 to 10% by weight, based on the total weight of components i to ii, of at least one polyester made of aliphatic and aromatic dicarboxylic acids and aliphatic diols, containing ii) 70 to 90% by weight, based on the total weight of components i to ii, of polylactide, and iii) 0.5 to 3% by weight, based on the total weight of components i to ii, of a nucleating agent, iv) 0 to 10% by weight of additives; and v) 0 to 50% by weight of inorganic or organic fillers, the foam layer consisting of closed cells to more than 70% and having a density of less than 35 g/l. The invention also relates to methods for producing said foam layers and to the use of the foam layers for producing molded articles and films and to molded parts and films that contain the foam layers according to the invention.
Abstract:
The present invention relates to an injection-moulded article having a DIN EN ISO 75-2:2004-09 HDT-B of 80 to 105°C, comprising: i) 47 to 59 wt%, relative to the total weight of components i to iv, of a biodegradable aliphatic polyester; ii) 3 to 14 wt%, relative to the total weight of components i to iv, of an aliphatic-aromatic polyester; iii) 15 to 24 wt%, relative to the total weight of components i to iv, of polylactic acid; iv) 10 to 35 wt%, relative to the total weight of components i to iv, of at least one mineral filler; for components i to iv in compounded form, the ratio of component i to component iii in the compound is 2.2 to 3.2 and the DIN EN 1133-1 (01.03.2012) MVR (190°C, 2.16 kg) of the compound is 8 to 50 cm 3 /10 min.
Abstract translation:本发明涉及具有80至105℃的DIN EN ISO 75-2:2004-09 HDT-B的注射成型制品,其包含:i)相对于组分i的总重量为47至59重量% 至iv,可生物降解的脂族聚酯; ii)相对于组分i至iv的总重量为3至14重量%的脂族 - 芳族聚酯; iii)相对于组分i至iv的总重量为15至24重量%的聚乳酸; iv)相对于组分i至iv的至少一种矿物填料的总重量为10至35重量%; 对于组分i至iv的复合形式,化合物中组分i与组分iii的比例为2.2至3.2,化合物的DIN EN 1133-1(01.03.2012)MVR(190℃,2.16kg)为8 至50 cm3 / 10分钟。