Types and development trend of ashless dispersants
Types and development trend of ashless dispersants
Wuxi nuofia Trading Co., Ltd. was established on May 9, 2012, with its registered address at Shuangmiao village, Luoshe Town, Huishan District, Wuxi City. Its main business scope includes the sales of chemical products (excluding dangerous goods), metal materials, hardware and electrical appliances. We have a professional supply company, the main products are detergent series, chlorine free light color ashless dispersant series; Anti oxygen and anti-corrosion agent series; EP antiwear agent series; Viscosity index improver series; Rust inhibitor series; Pour point depressant series; Gasoline engine oil compounding agent series; Diesel engine oil compound additive series; Vehicle gear oil complex agent series; Marine oil compound additive series; Hydraulic oil compound additive series; Worm gear oil complex agent series and hydraulic oil turbine oil complex agent. Wuxi nuofia Trading Co., Ltd. was established on May 9, 2012, with its registered address at Shuangmiao village, Luoshe Town, Huishan District, Wuxi City. Its main business scope includes the sales of chemical products (excluding dangerous goods), metal materials, hardware and electrical appliances. We have a professional supply company, the main products are detergent series, chlorine free light color ashless dispersant series; Anti oxygen and anti-corrosion agent series; EP antiwear agent series; Ashless dispersant is an important additive for lubricating oil and fuel oil. There are many kinds of ashless dispersants, including polyisobutylene succinimide, polyisobutylene succinic acid, amine saving, ashless phosphoric acid vinegar, high molecular weight ashless dispersant and boron modified ashless dispersant. In this paper, several ashless dispersants mentioned above and their main manufacturers inside and outside are summarized; At the same time, it is pointed out that with the increasingly strict requirements of engine work and environmental protection regulations, high viscosity index dispersants have become a research trend. In addition, ashless dispersants are required to have good dispersibility, as well as good air resistance, anti-wear and rubber compatibility. Keywords ashless dispersant lubricating oil fuel oil additive
The development of ashless dispersant is closely related to the development of modern automobile industry. In the 1940s and 1950s, the increase of foreign cars, especially the sharp increase of American cars, aggravated environmental pollution and urban traffic congestion. In order to reduce air pollution, the positive pressure intake and exhaust (PCR) system is widely used, which makes the acid substances bring into the oil tank, thus putting forward higher requirements for the oil performance of internal combustion engines. The traffic jam makes the cars running in the city often run at low speed and stop and open. In this case, the mixing degree of the automobile crankcase oil is reduced, so that the fuel hydrocarbon and moisture (moisture) are not easy to mix out of the lubricating oil, and the formation trend of the rising film and oil deposits is increased. However, a large amount of water vapor is condensed to form a large amount of emulsified oil sludge, which blocks the pipeline and filter screen, and seriously affects the normal operation of crankcase oil. For the above reasons, since the 1960s, ashless dispersant has been used in lubricating oil and fuel oil to solve the problem of oil sludge, thus ensuring the normal operation of vehicles. 1 type of ashless dispersant
There are many kinds of ashless dispersants, mainly including polyisobutylene succinimide, polyisobutylene succinate, amine saving, ashless phosphoric acid vinegar, etc. in recent years, high molecular weight ashless dispersants and boron modified ashless dispersants have also been developed.
2.1 polyisobutylene bisphenol imine ashless dispersant polyisobutylene bisphenol imine is a dispersant that is widely used and used in the largest amount. All major additive companies in the world have regular products. It can be basically divided into three categories, namely, monoisobutylene succinimide, bisisobutylene succinimide and polyisobutylene succinimide,