Details:

Chlorinated Polypropylene (CPP)

Structure Formula                  Cl

（ CH   CH₂ ）_nC   CH₂

         CH₃           CH₃         

Brief Introduction

Chlorinated Polypropylene (CPP) is a thermoplastic resin manufactured from polypropylene (PP) through chemical modification.

Properties

CPP is a nontoxic white or light yellow granular solid. Depending on the difference of  chlorine content, its melting point is generally in the range of 80~160℃ and its decomposition temperature 120~200℃. It is easily soluble in some organic solvents like halogenated hydrocarbons, toluene, butanone, etc. and it has high rigidity and good properties of wear-resistance, acid-proof, salt water-tolerance and aging-preventing.

Application

CPP belongs to thermoplastic resins. It has strong adhesion to polypropylene (PP) as well as polyethylene, paper and aluminum film, etc. So it is widely used in the fields of ink, painting and adhesives and its main usages are as follows.

1.      CPP can be used as an effective binder in the manufacturing of composite ink for the films of BOPP, OPP, PET, PE, etc.

2.      CPP can be used as a composite adhesive between paper and films of BOPP, OPP, PET, PE, AL, etc., and an inner coating for pressure-sensitive adhesive tape of BOPP films.

3.      With its good film-forming and glossiness properties and its strong affinity with pigment, CPP can be used as colorant for plastic modification or as paint binder for polypropylene (PP) injection molding wares.

Using methods

The service performance of CPP is relative to the indexes of chlorinating degree and viscosity, etc. So the CPP with different indexes has varieties of usages and should be used under the specialized engineer’s instruction. The common method is： Dissolve the product into the toluene or other solvents to prepare a solution of 20~30%. Then add the solution into the ink or other relevant products based on the ink formulation.

Technical requirements

Notes：1).Viscosity value is measured in 20% toluene solution at 25℃ by a rotary viscometer with speed of 750 r/min.

      2). Upon the request of the customers, chlorine content and viscosity can be controlled in a range of 1% and ±50 mPa.s, respectively.

Packing

The product should be packed into a fiberboard box lined with an internal polyethylene bag. Net weight of each piece is 20 kg.

Storage and transportation

The product is easy to absorb moisture and noninflammable. It should be stored in a dry and ventilated place. In general case, it should not be stored and transported together with other products.