Moving on to the Phosphorous and Sulphur: These are additives that are added to the oil. The Phosphorous is an anti-wear additive. The trouble is, that when it is burnt, it blocks the DPF - in addition the Phosphorous can poison the GPF (Gasoline Particulate Filter) in petrol engine cars...
In this case there is awareness that the technology has potential harmful side effects, but nonetheless, we choose to use it for the perceived benefits (e.g., for many years leaded petrol was one such technological product). This highlights the importance of two related approaches to harm ...
Liquid-like phases of calcium carbonate have also been prepared by addition of acidic polypeptides to generate polymer-induced liquid precursor28. Recent work has demonstrated that liquid emulsions can be formed without the use of organic additives if the materials are levitated to prevent nucleation16...
1.Use of unleaded petrol. During combustion, leadcompounds react with other additives in petrol to form volatile lead halideswhich is toxic. Moreover, lead products can inactivate the catalysts incatalytic converters. 2.Installation of catalytic converters in carexhaust systems. NO, CO and unburnt ...
The solvents can be added either, as already stated, during the preparation of the blocked polyisocyanates A), during the preparation of the polyester polyols B) or also at any desired later point in time. Further auxiliary substances and additives which are optionally present in the coating com...
They are used for the removal of metal ions in the paint mixture during production, preventing them from precipitating any anionic surfactants or dispersants (e.g., sodium hexametaphosphate). (12) UV absorbers and stabilisers. These additives are of recent use. In fact, some synthetic polymers,...
Promising areas may be: - functionalization of polysaccharides (introduction of carboxyl, amide and ether fragments); - increasing the degree of branching of the main chain of polysaccharides; - search for synergistic additives to polysaccharides and the creation on their basis of new highly effective...