Chloroprene
Functional elastomer providing a good balance of important properties for a wide variety of applications
Showa Denko has been manufacturing Polychloroprene in both solid and liquid dispersions for over 50 years with consistent, high quality performance and customer satisfaction. Showa Denko had a joint venture with DuPont from 1963 up until 2002 and continues to use the same manufacturing methods, formulations, and technology.
Polychloroprene is used in a wide variety of applications, including but not limited to: adhesives, asphalt emulsions, bridge bearings, coatings, general rubber parts, hoses, medical devices, textiles, waterproof membranes. Polychloroprene offers a good balance of properties over other elastomers, such as: high elasticity, oxidation resistance, heat resistance, oil resistance, low temperature resistance, compression set, weather resistance, ozone resistance, abrasion resistance, and flame resistance.
Product Name: Showa Denko Chloroprene
Chemical Name: Polychloroprene
HS Code Number: Dry 4002.49.00, Latex 4002.41.00
Footprints:
| 1960 | Established Showa Neoprene (JV: SDK 50%,Dupont 50%) |
|---|---|
| 1963 | Started Neoprene local production at Kawasaki. |
| 2002 | DuPont/Showa Denko joint venture terminated. Showa Denko took over 100% of the Chloroprene production plant in Japan. |
| 2010 | United States of America – Anti-Dumping Duty on Japanese chloroprene was lifted. |
| 2012 | First U.S. warehouse opened in Cincinnatti, OH. |
| 2012 | Second U.S. warehouse opened in Rancho Cucamonga, CA. |
Sample Request Form (Word Document)
Liquid Dispersion – Latex:
Showa Denko Latex is available in both anionic and non-ionic forms.
| Grade | Polarity | Solid content(%) | Polymer Structure | Crystallization Rate | Other Characteristics | |
|---|---|---|---|---|---|---|
| Gel Content | Homo /Copolymer | |||||
| 400 | Anionic | 50 | Medium | Copolymer | Extremely fast | Ozone,Weatherability |
| 750 | Anionic | 50 | Medium | Copolymer | Extremely slow | Flex, excellent elasticity |
| 752 | Anionic | 50 | Medium | Copolymer | Extremely slow | Flex resistance elasticity (soft) very low modulus |
| 753 | Anionic | 50 | Medium | Copolymer | Extremely slow | Flex, excellent elasticity with accelerator-free |
| 650 | Anionic | 60 | Medium | Copolymer | Extremely slow | High solid version of LD750 |
| 654 | Anionic | 59 | Low | Copolymer | Low | Low modulus |
| 842A | Anionic | 50 | High | Homopolymer | Very slow | High cure rate |
| 671A | Anionic | 59 | Med-High | Homopolymer | Medium-Slow | High wet gel strength |
| AE101 | Non ionic | 59 | Med-High | Homopolymer | Medium-Slow | Colloidal stability at low pH |
| 572 | Anionic | 50 | High | Homopolymer | Fast | Quick Grab strength |
| 571 | Anionic | 50 | High | Homopolymer | Slow | General Purpose, High cure rate |
| 115 | Non ionic | 47.5 | Low | Copolymer | Slow | Carboxylated,Hot bond strength |
| SD77S | Anionic | 55 | Sol(No gel) | Homopolymer | Very fast | Quick break for foam bonding |
| SD100 | Anionic | 55 | Sol(No gel) | Homopolymer | Very fast | Excellent Quick break for foam bonding |
| SND 57 | Anionic | 58 | Sol(No gel) | Homopolymer | Medium | Tackiness, very low MW |
| SD78 | Anionic | 60 | Med-High | Copolymer | Fast-Medium | Wood High Pressure Laminate |
Dry Grades:
Showa Denko Chloroprene has four different types: A, W, T and G.
Dry Grade - General Purpose
| Grade | Mooney Viscosity [ML 1+4，100℃] |
Crystallization Rate | Other Characteristics |
|---|---|---|---|
| G Types (Sulfur-modified Group) | |||
| GN | 42－59 | Medium | Non-staining, sulfur modified basic G type with best tear strength and flex resistance |
| GRT* | 40－54 | Slow | Good low temperature properties G type with best tack for frictioning application |
| GW | 37－49 | Slow | Sulfur modified G type with better heat and compression set resistance than GN and GRT |
| W Types (Basic Group) | |||
| W | 42－51 | Medium | Standard grade for general purpose |
| WM1* | 34－41 | Medium | Lower viscosity version of W |
| 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) | |||
| WXJ | 42－51 | Very Slow | Good low tempetature 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 |
| WD | 100－120 | Extremely slow | Higher viscosity version of WRT for high loading use |
| W Types (Extrusion & Calendering) | |||
| WB | 42－51 | Medium | Best extrusion and calendering properties |
| WXK | 73－89 | Very Slow | Good low temperature properties with better extrudability |
| WXKT | 106－117 | Very Slow | Higher viscosity version of WX-K for high loading use |
| SND37 | 73－89 | Very Slow | Better extrusion version of WX-K with improved mold release |
| W Types (Low Mold Fouling Group) | |||
| WK | 42－51 | Medium | Better mold release version of W with good mill-and flow-ability |
| WXJK | 42－51 | Very Slow | Improved mold release version of WXJ with good mill-ability |
| 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 temp. version of WRT with improved mold release for injection molding goods |
| T Types (Specific Group for Extrusion, Calendering) | |||
| 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 |
* Please contact your regional account representative for supply availability.
Dry Grade – Adhesive Application
| Grade | Mooney Viscosity [ML 1+4，100℃] |
Crystallization Rate | Form | Other Characteristics |
|---|---|---|---|---|
| W Types | ||||
| W | 42－51 | Medium | Chip/Slice | Most common grade |
| WM1 | 34－41 | Medium | Chip | Lower viscosity version of W. |
| WHV | 109－130 | Medium | Slice | Higher viscosity version of W. |
| WHV100 | 95－105 | Medium | Chip/Slice | Lower viscosity version of WHV. |
| WHV140 | 86－130 * | Medium | Slice | For high viscosity adhesive |
| WHV200*** | 180－300 * | Medium | Chip | For further 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. |
| A Types | ||||
| AC | 31－43* | Very fast | Chip | Adhesives and paints use with good breakdown properties |
| ADS | 10－35* | Very Fast | Chip | Low solution viscosity of AD, low VOC adhensive potential |
| AD | 33－46* | Very fast | Slice | Adhesives and paints use with good solution viscosity stability |
| AD40*** | 76－115* | Very fast | Slice | High solution viscosity version of AD |
| AF | 45－115** | Slow | Chip | Excellent hot bond strength. Carboxylated. |
| AG | 80-130 | Medium-Slow | Slice | Excellent sprayability, thixotropy. |
* Brookfield viscosity of 5% raw polymer solution in toluene at 25℃, [mPas]
** Brookfield viscosity of 10% raw polymer solution in toluene/hexane(60/40 vol/vol) at 25℃, [mPas]
*** Produce to Order
Packing of Chloroprene Rubber
Paper Bag
25kg or 20kg/Bag
(55.10lb or 44.08lb/Bag)
EVA Bag
25kg (55.10lb)/Bag
Melting Point at 90⁰C(194⁰F)
Skid/Pallet
1,000kgs (2,204lb)/Pallet
16 pallets in a 20ft container
16,000kgs (35,264lb)
IBC
Net: 1110kg (2,442lb)
Gross: 1170kg (2,574lb)
Size: 1200 X 1150 X 1100mm
ISO Tank
Approx. 5,000 gallons
or 44,000lb or 20MT
wet weight