Polybutylene is known as “plastic gold” in the industry. Commercial products of all-polybutene-1 are based on all-polybutylene content (98% to 99.5%) and high molecular weight (average molecular weight of 230,000 to 750,000) polymers with outstanding heat creep resistance, environmental stress cracking resistance and good toughness, suitable for pipes, food Film and sheet, especially for hot water pipes. Translated with www.DeepL.com/Translator (free version)
The homogeneous liquid-phase propriety method for the synthesis of polybutene-1 is a simple polymerization process with high production efficiency due to the absence of inert solvents, but the polymer dissolved in the monomer limits the conversion rate of the polymerization reaction. BASF’s new process of liquid-phase ontology is the representative process for polybutene-1 production nowadays, using a highly active Ziegler-Natta catalyst without catalyst extraction process and extruder de-volatilization process, thus greatly reducing investment and operating costs.
The non-homogeneous liquid-phase ontology method, which does not use inert solvents, is a simple polymerization process with high production efficiency and high industrial application because the polymer is suspended in the liquid-phase butene-1 monomer and can be dried and packaged directly by flashing the monomer. Although gas-phase polymerization offers better operational flexibility, polymer adhesion can lead to long-term equipment instability due to the high solubility of polybutylene in butene monomer and the better affinity of butene-1 monomer for hydrocarbon solvents.
All-polybutene-1 commercial products are based on the same content (98% to 99.5%), high molecular weight (average molecular weight of 230,000 to 750,000) polymer, known as “plastic gold”, has outstanding heat creep resistance, environmental stress cracking resistance and good toughness, suitable for pipe, food film and sheet, especially for hot water pipes. Especially for hot water pipe is the best.
The most representative application of polybutylene pipes in China belongs to the National Opera House, where polybutene-1 pipes were used for the floor heating system. The polybutene-1 pipes were supplied by Georg Fischer (Switzerland), who provided an economical and energy-saving temperature control system solution for the project. The more than 10,000 square meters of radiant floor heating piping system in the grand theater was installed with GF brand polybutene-1 pipes and manifolds.
The radiant floor heating system saves energy up to 20-30% compared with traditional heating methods, and the GF heating system can realize temperature control by time and room, so it has considerable energy-saving benefits. The temperature control equipment used in traditional heating methods needs to be replaced every 8-10 years, while plastic pipes buried in the concrete of the ground can have a service life of more than 50 years without corrosion and scaling, saving future maintenance and replacement costs.
In addition, the theater also has high requirements for sound insulation, and the GF plastic pipe layer laid underground can provide better sound insulation, which can be a multi-functional solution. The project was named one of the top ten new architectural wonders in China by Business Week.
It can be used as hot and cold water pipe, agricultural and horticultural pipe, snow melt pipe, heating pipe, fire sprinkler system pipe, industrial pipe, hot spring pipe, solar residential warm water pipe, etc. pipe, etc.
Films produced with polybutene-1 can be applied to food packaging, effectively reducing the force required to break apart molecules, and succeeding in making films with both easy peel-off properties and strong sealing properties. The film can be easily sealed by heat treatment, and the sealing performance can be determined by different average peel-off forces and different peel-off surface conditions, and can be used for packaging chemicals and fertilizers.
If Dongfang Hongye’s 50,000 tons/year of polybutene-1 is integrated into the scope of China’s polybutene-1 market, then the current Chinese market volume is about 53,000 tons/year. However, China imports more than 500,000 tons of polybutene-1 each year and has more than 400,000 tons of polybutene-1 plastic parts, so it can be roughly calculated that China’s annual consumption of polybutene-1 is close to 1 million tons in size.
It can be seen that China polybutene-1 belongs to the product that is heavily dependent on imports, and is also the material that the country proposes to replace imported products in new material research and development. And, Pingtou believes that with the rapid development of China’s economy, as well as the trend of upgrading the quality of products, China’s consumption volume of polybutene-1 is expected to exceed 2 million tons in the next five years, which belongs to the category of high growth.
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