摘要:
Disclosed is a casing body (1) made of a thermoplastic plastic material, in particular for cosmetic pencils or writing pencils, the cavity H of which is enclosed by an at least three-shell construction A, Z, I, it having 1 to 10 outer shells A, an intermediate shell Z and 1 to 10 inner shells I, the intermediate shell Z including a polyamide foam and at least one of the other shells A, I including a polyamide.
摘要:
Disclosed is an impact-resistant modified polyamide molding compound which is suitable in particular for the production of containers having a good oxygen barrier and low-temperature impact strength. Also disclosed are containers which are produced from the thermoplastic polyamide molding compound. In particular, storage or transport containers for industrial chemicals, agrochemicals, the cosmetic industry, pharmaceutical industry or foodstuffs industry can be produced from the polyamide molding compound of the invention.
摘要:
Disclosed is an impact-resistant modified polyamide moulding compound which is suitable in particular for the production of containers having a good oxygen barrier and low-temperature impact strength. Also disclosed are containers which are produced from the thermoplastic polyamide moulding compound. In particular, storage or transport containers for industrial chemicals, agrochemicals, the cosmetic industry, pharmaceutical industry or foodstuffs industry can be produced from the polyamide moulding compound of the invention.
摘要:
The invention relates to a method for the production of polyamide nanocomposites made from base polymers comprising aromatic components and organically-modified phyllosilicates in a double-screw extruder with a front-feeder and a side-feeder. Said method is characterised in that a portion (A) from 8 to 15 wt. % of a granulate of the base polymer is introduced in the front-feeder of the double-screw extruder and the main portion (B) of said granulate of the base polymer is introduced by means of the side feeder of the double-screw extruder and that 2 to 8 wt. % of the modified phyllosilicate is introduced into the melt of the granulate portion (A) of the base polymer, whereby the wt. % proportions relate to the finished polyamide nanocomposite. According to the invention, packaging materials with high UV absorption and improved gas and aroma barrier effect can be produced by said method. Furthermore, the corresponding packagings the use thereof and moulded bodies produced by means of said method are disclosed.
摘要:
A partially aromatic copolyamide is formed of: (a) 5 to 30 weight-% of hexamethylene diamine (b) 10 to 40 weight-% of metaxylylene diamine (c) 15 to 50 weight-% of adipic acid (d) 5 to 45 weight-% of at least one aliphatic dicarboxylic add with 7 to 10 carbon atoms, preferably sebacic acid and/or acelaic acid, wherein the components (a) to (d) add up to 100 weight-%, and the add groups and the amine groups are essentially present in equimolar portions. These novel copolyamides are used for producing barrier layers for mono- or multi-layered composites, such as foils or containers, infusion- or ostomy bags, shrink wraps for meat, fish and cheese packagings or sausage skins, wherein the copolyamides can be present in the pure form or as a mixture with other polymers, in particular in combination with further polymer layers.
摘要:
A polyamide-containing polymer mixture having a melt viscosity of 1,000 to 1,400 Pa.multidot.s (at 270.degree. C. and under a load of 122.6 N) and includes the following components:(A) 50 to 75 parts by weight of polyamide 6, polyamide 6,6, polyamide 12 or mixtures thereof;(B) 15 to 30 parts by weight of a polyolefin having a density of 0.921 to 0.96 g/cm.sup.3 onto which an unsaturated carboxylic acid or an unsaturated carboxylic acid derivative has been grafted, the degree of grafting being between 0.01 and 1 weight percent, with respect to the total weigh of grafted and ungrafted polyolefin;(C) 10 to 20 parts by weight of a grafted polyolefin elastomer including at least ethylene and propylene units;(D) Additives selected from the group including stabilizers, anti-friction agents and fillers,with the sum of the parts by weight of components (A) to (D) being 100, and the mixture being produced by mixing components (A), (B) and (D) or (A), (B), (C) and (D) and extruding them at 150 to 300 rpm.The invention further relates to a shaped object that can be produced by means of injection molding, extruding, coextruding, blow molding or reshaping with the use of said polymer mixture having components (A) through (D).
摘要:
The invention relates to a barrier layer resisting the transmission of oxygen for multi-layer barrier film characterized in that it is made of a transparent copolyamide comprising three components. The first component is hexamethylenediamine and adipic acid. The second component is hexamethylenediamine and azelaic acid, hexamethylenediamine and sebacic acid, and mixtures thereof. The third component is hexamethylene-diamine and isophthalic acid, hexamethylenediamine and terephthalic acid, and mixtures thereof. The total of all components is 100 mol %, and the ratio of the barrier effects in the barrier layer with respect to carbon dioxide and oxygen is at least 3:1.
摘要:
The invention relates to a method for the production of polyamide nanocomposites made from base polymers comprising aromatic components and organically-modified phyllosilicates in a double-screw extruder with a front-feeder and a side-feeder. Said method is characterised in that a portion (A) from 8 to 15 wt. % of a granulate of the base polymer is introduced in the front-feeder of the double-screw extruder and the main portion (B) of said granulate of the base polymer is introduced by means of the side feeder of the double-screw extruder and that 2 to 8 wt. % of the modified phyllosilicate is introduced into the melt of the granulate portion (A) of the base polymer, whereby the wt. % proportions relate to the finished polyamide nanocomposite. According to the invention, packaging materials with high UV absorption and improved gas and aroma barrier effect can be produced by said method. Furthermore, the corresponding packagings the use thereof and moulded bodies produced by means of said method are disclosed.
摘要:
The invention relates to a barrier layer resisting the transmission of oxygen for multi-layer barrier film characterized in that it is made of a transparent copolyamide comprising three components. The first component is hexamethylenediamine and adipic acid. The second component is hexamethylenediamine and azelaic acid, hexamethylenediamine and sebacic acid, and mixtures thereof. The third component is hexamethylene-diamine and isophthalic acid, hexamethylenediamine and terephthalic acid, and mixtures thereof. The total of all components is 100 mol %, and the ratio of the barrier effects in the barrier layer with respect to carbon dioxide and oxygen is at least 3:1.