PP (Polypropylene)

Polypropylene is one of the polyolefin family thermoplastic. Polypropylene grades mainly classifield by homopolymer PP, Random Copolymer PP (improved clarity) and Impact Copolymer PP (better impact resistance) and other special grades. Polypropylene easily produced to use in specific applications by means of compounding with glass fibre , talc or others. 

 

 

Properties
	Hardness	Toughness	Clarity
Homo polymer PP	***	*	**
Impact copolymer PP	**	***	*
Random copolymer PP	*	**	***

 

 

It's produced with propylene monomer and catalist in a single reactor. Homopolymers is characterised by high isotactic index, having higher melting point. It has good chemical resistance against inorganic acids, alkalis and salts. Additionally, homopolymers provides high ESCR (enviromental stress crack resistance) when expose with  alcohols, esters, detergant and polar hydrocarbons. Homo PP is an ideal polymer for high heat resistance applications, like hot filling or vapor sterilization. 

 

 

•  Suitable for injection, extrusion and blow molding processes

• High efficiency

• Good mechanical properties

•  High stiffnes / impact balance 

• High heat resistance

• High gloss and clarity

• High chemical resistance

 

 

Hot fill packing, home appliances, carpet backs, artificial grass, cast film extrsuion, food packaging, caps & closures , boxes, cosmetic packaging, thin wall containers,toys, office accesserious. 

 

 

Two reactors need to produce. When first reaction ends, polymerization prosess going on  with etylene to create EPR. Second stage of polymerization provides impact  resistance against to cold and hot weather conditions. Impact copolymer has tough/stiff and high tensile strength properties.  

 

 

•  High stiffnes and impact strength balance even at lower temperatures.

•  High stiffness and hardness

•  High mechanical properties

•  Good and easy processing conditions.

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Applications

 

Pails & bucket, boxes, crates, furniture parts, otomotive parts, containers, plastic products for outdoor usage, toys, machinery parts.

 

 

Random PPC has been producing by one single reactor process with adding less than 5% ethylene, aiming to gain high clarity and transparency. It's most flexiable grades among 3 type of PP, it has also better weathering properties comparing with homopolymer.  

 

 

•  Very good clarity and tranparency

•  Higher mechanical properties

•  Best balance between hardness, stifness and optical properties. 

•  Good optical appearance

•  Easy processing

 

Applications

 

Clear containers, shrink films, food packaging, texstile packing, sealing layers, home appliances, buckets, closures, protective containers, fine packing and consumer goods.