Übersetzung für "Mit niedriger dichte" in Englisch

On the other hand, low-density alloys possess virtually no high-temperature strength.

Lightweight aggregates are aggregates having particularly low density.

Particularly in the automotive sector, sealing compounds, underbody sealing materials and adhesives having a low density are preferred.

Low-density foam is used as panel core.

It is particularly suitable for low density materials.

Usually only particles of low density can be made this way, due to the loose structure.

Either polyethylene of high density or polyethylene of low density may be used.

Anabolic steroids have actually been reported to increase low-density lipoproteins and decrease high-density lipoproteins.

Anabolic steroids have been reported to increase low-density lipoproteins and decrease high-density lipoproteins.

The term LDMC refers to fibre-reinforced moulding compounds of low density (Low Density Moulding Compounds).

An example of a hard foam material with low density is the PMI-hard foam material Rohacell of the firm Röhm.

Recycled linear polyethylene, granular, post-consumer, for extrusion.

On the occasion of a big kill, any excess dietary fatty acids were packaged into low-density lipoproteins and transported out of the liver to be stored in peripheral fat tissue.

Example F Combination with antioxidants Low-density polyethylene is mixed as described in Example A with 1.7% of dicumyl peroxide and 0.6% of stabiliser, and the mixture is compressed at 125° to give sheets, which are crosslinked at 240° for 10 minutes.

This is of major importance for the steel industry because low density filters prime easily and offer low resistance to steel flow.

Accordingly, the process of the invention leads to the production of polyurea foams from polyetheramines having primary amino groups and polyisocyanates, in which, in spite of the high reaction rates to be expected in the case of such systems, foams having a low density and advantageous properties, inter alia, with respect to freedom from odor, resilience, mould release properties, content of unconverted diisocyanates and the like, can be obtained.

The graft-modified linear low-density polyethylenes according to the invention are preferably grafted with the customary grafting materials for polyethylenes containing carboxyl groups such as, for instance, acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid, crotonic acid, endo-cis-bicyclo(2,2,1)hepto-5-en-2,3-dicarboxylic acid and bicyclo(2,2,1)hepto-2-en-5-,6-dicarboxylic acid, the derivatives of these acids, such as their acid halides, amides, imides, anhydrides, esters and salts.

The linear low-density polyethylenes (LLDPE) and very low-density polyethylenes (VLDPE) that may be considered according to the invention can be prepared using processes known in the art, such as for instance processes using transition metal compounds as catalysts, particulary, Ziegler-Natta catalysts (cf. for insatnce GB-A-1 235 062).

Furthermore, a production method for porous bricks with low density, improved spalling resistance and low thermal conductivity is known from "Low Density and Low Thermal Conductivity Chrome Oxide Refractories for Glass-Melting Furnaces for Fiber Production", Krivoruchko et al, Ogneupory, No. 4, pp. 45-49, April 1981 in which the material is fired in a single-stage firing operation in an oxidizing atmosphere in conjunction with an opening material.

It is also possible to provide the film, particularly if it has a relatively low density, with an additional embossed pattern which is reproduced on the metal layer to be transferred.

The vinylaromatic compound(s) used for grafting linear low-density polyethylenes, are for instance styrene, substituted styrenes, such as R-styrene, where R is an alkyl group with 1 to 10 carbon atoms.

Particularly linear low-density polyethylenes grafted with a mixture of styrene and maleic anhydride, for instance in a molar ratio of 5:1 to 1:5 and specifically of 2:1 to 1:2, have turned out to be particularly advantageous impact modifiers for thermoplastic polymers.

According to the invention, while using styrene/maleic anhydride in conformity with the preferred mode of realization, particularly in a molar ratio of 5:1 to 1:5, preferably of 2:1 to 1:2, the suitable low-density polyethylenes are appropriately so grafted that the grafting reaction is carried out at a temperature ranging from 110° to 200° C. in a device exercising a strong shearing effect for the intimate mixture of the reactants, in which process are used a solvent such as acetone, in a weight ratio of 5:1 to 1:20, particularly 2:1 to 1:10, calculated on the total graft material, and a radical initiator chosen from organic peroxides such as dialkyl peroxides, diaryl peroxides, diacyl peroxides, organic peracids, organic peracid esters, alkyl hydroperoxides, aralkyl peroxides, or azo compounds, preferably in an amount of 0.01 to 0.5% (wt) calculated on the polyethylene.

The graft-modified linear low-density polyethylenes according to the invention can further be used as adhesives or adhesive layers or as bonding layers between layers of other materials, such as other polymers (such as polyolefins), metals, paper, etc., that is, they can be used for the production of multi-layer composites, for instance for the bonding of polymer with polymer, polymer with metal, as well as glass, woven or non-woven fabrics or mats, paper or the like.

In this way it is possible to produce a ready-to-use one-component silicone foam of low density without employing expensive, coloured or water-containing fillers and without wetting agents or blowing agents.

However, using the process described it is difficult to produce foam slabs or foam sheeting having a low density (less than 8 g.l-1) and a foam height of more than 20 cm.