Sipemat

The absorbait polymer was isolated by stirring 100 g of sapon-ificate with 400 of methanol in a Waring blender for 1 min at hic speed (initial precipitation). Sipematant was decanted from settled solid, 200 viL of fresh methanol was added, and the mixture was again blended for 1 min. The mixture was transferred to a beaker, stirred for 30 min, and the solid was collected on a filter. The methanol-wet solid was wei ied and divided into four equal portions, vdiich were then stirred for 30 min with 25 mL of either pure methanol or solutions pr >ared dissolving oonoen-trated Hd (usually 0.5 g or 1.0 g) in 100 niL of methanol. 

Mixed with 25% Sipemat CAS 68555-98-6 and 112926-00-8 EINECS conforms flowing powder Sulfur content > 20% < 22% Water content < 2% 99 wt% passes 840 pm sieve 98 wt% passes 300 pm sieve vulcanizing agents... 

Sipemat . [Degussa] Silica adsorbent anticaking and freeflow agents, carrier antiblock for films. 

Spray drying water glass - - acid approx. 1964 Vulcasil, Zeolex Ketjensil, Sipemat,... 

Silicas from a wet process Precipitation Sodium silicate -I- Acid Degussa, PPG 1940 Hi-Sil, Sipemat, Ultrasil, Zeosil... 

Sipemat Precipitated Silicas and Silicates, technical bulletin from Degussa Corporation. 

Day-Glo Color Corp. FIRE ORANGE NX-14 Degussa Corporation TS-lOO Degussa Corporation Aerosil 200 Degussa Corporation Sipemat 22 Degussa Corporation Sipemat 50... 

Siliporite Sipemat 820A Preventol P109 Preventol P 109-N ... 

PF-5030 PF-5040 PF-5050 PF-5052 PF-5060 PF-5070 PF-5080 carrier, inert Monochlorotoluene carrier, inert actives Sipemat 22LS SIpemat 22S Sipemat 500LS... 

Sipemat 820A SMum siKcoaluminate Unispai 40 Uni i)ai 50 Zeolex 80 1344-09-8 N Sotfum Siicate Sodiun silicate 1344-28-1 Alcoa A-12 Alcoa A-16 Alcoa RG-300... 

Degussa markets a fine particle size grade of sodium aluminium silicate called Sipemat 44 MS for achieving good haze quality in polyethylene and polypropylene film. It also offers Sipemat 310, an antiblock of amorphous silica with very fine particles and a high specific surface area of approximately 750 mVg, for use in polyethylene and polypropylene films where a very low coefficient of friction is required. 

Commerdal name Aerodisp G and W, Aerosil, Bindzil, Levasil, Sipemat... 

On account of the method of production, Sipemat 44 is free from i urities which could load to discolouration. Even a masterbatch of hisd> concentration shows only a diite brlgdttening. There is no yellow or grey discoloration, a phenomenom which is often observed when using other materials. Furthermore, the method of synthetic production and the raw materials used guarantee that a constant quality of Sipemat 44 is delivered. 

In ccnqparison with other antiblocking agents, Sipemat 44 is relatively readily dispersible. Mevertheless, it is advisable to Incorporate Sipemat 44, too, according to one of the usual methods (in most cases knsader) to a masterbatch (concentrate). 

According to e thickness of the foil and the denslty/stiff-ness of the polymer, it is sufficient to add only approx. 0.1% Sipemat 44 in order to achieve a good effect of antiblocking. This low quantity almost does not influence the transparency, lucidity, surface properties and mechanical properties of the film. Due to the high purity of Sipemat 44, a discolouration cannot be observed, even the roll does not show this undesired effect. 

Sipemat 44 can be considered unobjectionable with regard to physiology. 

Silica, amorphous Silica, amorphous hydrated Silica, ftaned Silica gel Sipemat 22 Sipemat SOS Syloid 244FP Sylysla350 Zeofree 80 Zeofree 5162 231-548-0 Sodium bisulfite 231-555-9 Sodium nitrite 231-592-0... 

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