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Showa Denko Chloroprene Grades



1. General Purpose Grades

For general purposes we offer you the following Showa Denko Chloroprene grades:

  • G Types
  • W Types (Basic Group)
  • W Types (Crystallization Resistent Group)
  • W Types (Extrusion & Calendering )
  • W Types (Low Mold Fouling Group)
  • T Types (Specific Group for Extrusion, Calendering)
 
 

G Types (Sulfur-modified Group)



Grade  

Mooney Viscosity [ML 1+4, 100°C]

Crystallization Rate

Other Characteristics

GW

34-52

slow

Sulfur-modified G type with better heat and compression set resistance than GS and GRT

 
 
 

W Types (Basic Group)



Grade

Mooney Viscosity [ML 1+4, 100°C]

Crystallization Rate

Other Characteristics

W

42-51

medium

Standard grade for general purpose

WHV

109-130

medium

Higher viscosity version of W for high loading application and general adhesives

WHV100

95-105

medium

Lower viscosity version of WHV

 
 
 

W Types (Crystallization Resistant Group)



Grade

Mooney Viscosity [ML 1+4, 100°C]

Crystallization Rate

Other Characteristics

WXJ

42-51

very slow

Good low temperature properties for general use

SND5

67-76

very slow

Higher viscosity version of WXJ

SND8

32-37

very slow

Lower viscosity version of WXJ

WRT

42-51

extremely slow

Excellent low temperature properties

 
 
 

W Types (Extrusion & Calendering)



Grade

Mooney Viscosity [ML 1+4, 100°C]

Crystallization Rate

Other Characteristics

WB

42-51

medium

best extrusion and alendering properties

WXK

73-89

very slow

good low temperature properties with better extrudability

WXKT

106-117

very slow

higher viscosity version of WXK for high loading use

SND37

73-89

very slow

better extrusion version of QXK with improved mold

 
 
 

W Types (Low Mold Fouling Group)



Grade

Mooney Viscosity [ML 1+4, 100°C]

Crystallization Rate

Other Characteristics

WK

42-51

medium

Better mold release version of W with good mill- and flowability

WXJK

42-51

very slow

Improved mold release version of WXJ with good millability

SND35

63-73

extremely slow

More excellent low temperature properties of WRT with improved mold release for injection molding goods

SND43

78-88

extremely slow

Higher viscosity version of SND-35 with less shrinkage

SND45

60-73

extremely slow

More excellent low temp. and improved brittleness temperature version of WRT with improved mold release for injection molding goods

 
 
 

T Types (Specific Group for Extrusion, Calendering)



Grade

Mooney Viscosity [ML 1+4, 100°C]

Crystallization Rate

Other Characteristics

TW

42-51

medium

Superior extrusion and calendering grade with good tensile properties

TW100

85-102

medium

Higher viscosity version of TW for high loading use

SND22

42-51

very slow

Good low temperature properties with better extrudability

SND48

85-100

very slow

Higher viscosity version of SND-22 with better calender-ability and extrusion-ability having colapse resistance.

TRT

42-51

extremely slow

Excellent low temperature properties with better processability

 
 

2. Adhesive Application Grades

For your adhesive applications we offer you below Chloroprene grades:

  • W Types
  • A Types
 

W Types



Grade

Mooney Viscosity [ML 1+4, 100°C]

Crystallization Rate

Form

Other Characteristics

W

42-51

medium

Chip

Lower viscosity version of W

WHV

109-130

medium

Slice

Higher viscosity version of W

WHV100

95-105

medium

Chip

Lower viscosity version of WHV

WHV140

100-130*

medium

Slice

For high viscosity adhesive

WXJ

42-51

very slow

Chip

Soft film and high tack at low temperature

WRT

42-51

extremely slow

Chip

Extremely soft film and high tack at low temperature

* Brookfield viscosity of 5% raw polymer solution in toluene at 25°C [mPas]

 
 

A Types



Grade

Mooney Viscosity [ML 1+4, 100°C]

Crystallization Rate

Form

Other Characteristics

AC

31-43*

very fast

Chip

Adhesives and paints use with good breakdown properties

AD

33-46*

very fast

Slice

Adhesives and paints use with good solution viscosity stability

AF

45-115**

slow

Chip

Excellent hot bond strength. Carboxylated.

AG

80-130

medium-slow

Slice

Excellent sprayability, thixotrophy

* Brookfield viscosity of 5% raw polymer solution in toluene at 25 °C [mPas]
** Brookfield viscosity of 10% raw polymer solution in toluene/hexane(60/40 vol/vol) at 25°C [mPas]


 

 

3. Liquid Dispersion

 

Grade

Polarity

Solid Content (%)

Polymer Structure

Crystallization Rate

Other Characteristics

Gel Content

Homopolymer/ Copolymer

400

Anionic 

50

medium

Copolymer

extremely fast

Ozone,Weatherability

750

Anionic  

50

medium

Copolymer

extremely slow

Flex resistance

650

Anionic  

60

medium

Copolymer

eytremely slow

High solid version of LD750

842A

Anionic 

50

high

Homopolymer

very slow

High cure rate

671A

Anionic 

60

med-high

Homopolymer

medium-slow

High wet gel strength

654

Anionic 

59

low

Homopolymer

medium-slow

Low modulus, sticky film

572

Anionic 

50

high

Homopolymer

fast

Quick Grab strength

571

Anionic  

50

high

Homopolymer

slow

General Purpose, High cure rate

115

Non ionic

47

low

Copolymer

slow

Carboxylated, Hot bond strength

SND57

Anionic

58

Sol (no gel)

Homopolymer

fast-medium

Excellent tackiness

SD77S

Anionic

55

Sol(no gel)

Homopolymer

very fast

Quick break for foam bonding

SD78

Anionic

60

med-high

Copolymer

fast-medium

Wood High Pressure Laminate

 


Download our Grade Selection Guide

Showa_Denko_Chloroprene_Grade_Selection_Guide.pdf


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