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Chlorinated rubber

■ Introduction of Chlorinated rubber

“SUNCOAT” is the registered trade-name of Chlorinated rubber (CR) produced by Sundow Polymers Co., Ltd.

SUNCOAT™ chlorinated rubber is a derived product modified from the natural rubber through chlorination. It finds wide application in the production of coatings, inks, adhesives, etc. The company has a working capacity of 3500 tons of the chlorinated rubber with advanced technology and fine equipment. The quality of the product is stable and reliable. The product is trustworthy and well received by the customers.

In coatings to remarkably improve the coating properties such as weatherability and water resistance, insulation, inflammability, anti-acidity, anti-alkali, adhesion as well as impact strength. The chlorinated rubber coatings is widely applied to surface protection of materials for severe situation, such as shipping, offshore platforms, bridges, docks, containers, motor vehicle chassis, road signs, chemical equipment, etc. Additionally, high viscosity chlorinated rubber is applied to high-strength adhesives production, or added into other rubber products to improve its quality, while the low-viscosity product is applied to high-grade ink making.

 

■  SUNCOAT CR series

Sundow Polymers supplies two series of Chlorinated Rubber grades, one is H-series, which is produced by solvent technology; another is M-series, which is produced by water-phase technology.

▼  H-Series

H-series products are produced by dissolving natural rubber in non-ODS organic solvents and then through a series of process including chlorination synthesis, chemical

hydraulic analysis, centrifugation, washing, and drying. This technology is similar with Covestro, so H series products are closer to Pergut series products and can succeed to substitute pergut in most applications.

▼  M-Series

M-series is produced by non-solvent technology, so this series contains no harmful organic solvent and it is environmental friendly. Though this series’ property is a little lower than H-series, it can meet the technical demand of most general application, and its price is considerably cheaper than H-series. So this series is an economic choice for many general coating/adhesive applications.


■  Specifications

Item

Unit

Specifications

H-Series

CR H-5

CR H-10

CR H-20

CR H-40

CR H-90

CR H-130

CR H-170

M-Series

CR M-5

CR M-10

CR M-20

CR M-40

CR M-90

CR M-130

CR M-170

Viscosity at 23 , 20% in xylene

mPa.s

4 - 7

8 - 12

16 - 24

35 - 45

80 - 100

120 - 140

160 - 180

Comparable grade


Pergut S 5

Pergut S 10

Pergut S 20

Pergut S 40

Pergut S 90

Pergut S 130

Pergut S 170

Appearance


White or pale-yellow loose and soft   powders

Chlorine content (Cl)

%

≥ 64

Ash content

%

≤ 0.3

Water content

%

≤ 0.5

True density

g/mL

≥ 1.5

Bulk density

g/mL

≥ 0.08

Dichloroethane content

%

≤ 0.5

Chroma


6 - 11

Photo stability


Rather stable under UV-light

Heat stability


Stable under 130


■  Applications

Grade

Solubility / Thinnability

Properties / Applications

CR H-5

CR M-5

Generally speaking, it has   good compatibility with many solvents, plasticizers and binders. However, it   is necessary to test the solubility / compatibility in each case.

It can be used to   formulate fast-drying anticorrosion coatings with good weather stability and   resistance to water and chemicals. Used as a combination binder, for e.g.   alkyd resins, acrylates and ketone resins. It improves the initial adhesion   and water repellency of the system.

CR H-10

CR M-10

Generally speaking, it has   good compatibility with many solvents, plasticizers and binders. However, it   is necessary to test the solubility / compatibility in each case.

It can be used to   formulate fast-drying anticorrosion coatings with good weather stability and   resistance to water and chemicals.

CR H-20

CR M-20

Generally speaking, it has   good compatibility with many solvents, plasticizers and binders. However, it   is necessary to test the solubility / compatibility in each case.

It can be used to   formulate fast-drying anticorrosion coatings with good weather stability and   resistance to water and chemicals. It can also be used in abrasion-resistant   concrete floor coatings and roadmarking paints.

CR H-40

CR M-40

Generally speaking, it has   good compatibility with many solvents, plasticizers and binders. However, it   is necessary to test the solubility / compatibility in each case.

It can be used to   formulate fast-drying anticorrosion coatings with good weather stability and   resistance to water and chemicals. Used as a combination binder for e.g.   alkyd resins, acrylates and ketone resins, it improves drying properties and   resistance to inorganic acids.

CR H-90

CR M-90

Generally speaking, it has   good compatibility with many solvents, plasticizers and binders. However, it   is necessary to test the solubility / compatibility in each case.

It can be used to   formulate fast-drying swimming pool and concrete coatings with good weather   stability and resistance to water and chemicals.

CR H-130

CR M-130

It is soluble in aromatic   and chlorinated hydrocarbons and in ethyl acetate.

On account of its high   polarity, it is especially suitable for the formulation of primers and key   coats for rubber/metal bonds. Binder for, among other things, adhesives.

CR H-170

CR M-170

It is soluble in aromatic   and chlorinated hydrocarbons and in ethyl acetate.

On account of its high   polarity, it is especially suitable for the formulation of primers and key   coats for rubber/metal bonds. Binder for, among other things, adhesives.


■  Properties Difference

Items

Comparison on properties and performance

Viscosity / mPa.s

5...............170

Molecule weight

small..........large

Film former content in paint

high..........low

Miscibility with resin using in paint

good..........bad

Dispersity on pigment

good..........bad

Dissolution rate

fast..........slow

Stability paint liquid

good..........bad

Solvent   emission rate of paint liquid

fast..........slow

Age resistance

bad..........good

Electrical performance

low..........high

Mechanical properties

low..........high

Adhesive property

low..........high

Construction performance

bad..........good

Weatherability

low..........high


■  Packing, Storage and Transportation

Packed in Plastic bags lined of PP woven bags, 20 kg each; be on guard against moisture; Handle with care; Store in a cool; dry and well ventilated place.