Polychloroprene Rubber CR 244

Name: Polychloroprene Rubber CR 244
Brand: WPA Chemicals Limited
SKU: Tradewheel_2225699
Availability: InStock

FOB Price 2 - 6 USD / Kilograms

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Place of Origin	Shanghai, China	Brand Name	WPA
Model Number	WPA Polychloroprene Rubber CR 244	Product Name	Polychloroprene Rubber CR 244
Appearance	Beige ( or light brown) chips.	Place of Origin:	SHANG HAI, China
Material:	100% CR	Size:	130cm*330cm
Color:	White	Laminating fabric:	Printing Polyester
Feature:	Elastic	Usage:	Neoprene Product
Neoprene color:	Black White Beige

Product Details

Product Description

Polychloroprene Rubber Type CR244
A xanthogen-modified polychloroprene rubber with fast
crystallization rate, high cohesion force and adhesion strength at
normal temperature.
Color and form: White or light yellow chips
Solution Viscosity MPa.s (
15% toluene solution, direct method):
1000 - 3000 -- CR2441
3001 – 7000 -- CR2442
7001 - 10000 -- CR2443
Adhesive strength (N/cm): ≥ 80 (canvas / canvas)
Volatile matter % : ≤ 1.2
Ash content % : ≤ 1.2
Packing: Woven polypropylene lined-craft paper bags with a release
polyethylene liner, 25kg net weight each.
Applications: Polychloroprene rubber CR244 is recommended
widely for making adhesives applied to adhere various materials,
such as shoes, rubbers, leathers, plastics, furniture, metals, etc.
Storage life: one year below 25℃ from the date of production.
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Recommended Procedure for Making Adhesive by CR244
(In compliance with Environment Protection)
1. Recipe
1.1 Recipe for mixed solvents
Toluene 0.24
Acetone 0.19
6# Solvent Oil (or 120# Solvent Naphtha) 0.57
1.2 Recipe for Adhesive
1.2.1 Recipe for Resin Solution
Phenolic Resin: 0.294
Mixed Solvents: 0.667
Active Magnesium Oxide: 0.029
Distilled Water: 0.010
1.2.2 Recipe for Adhesive
CR244 0.151
Mixed Solvents 0.704
Resin Solution 0.144
Anti Oxidant 264 0.001
2. Process of Making Adhesive2.1 Preparation of Resin Solution
Add the mixed solvents to a tank as the Recipe above mentioned, then add
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Phenolic resin, active Magnesium Oxide and distilled water in turn to the tank
for chellate reaction at normal room temperature, which take time not less than
8 hours. The prepared resin solution can be stocked for use anytime.
2.2 Adhesive Making
2.2.1 Plasticization: put the rubber CR244 on the mill, plasticizing. It will be
OK when the rubber surface is smooth and have luster. During the
plasticization, a little bit of MgO can be mixed to prevent any scorch of
the rubber.
2.2.2 Dissolution: Add the mixed solvents to a tank, start stirring, put the
plasticized rubber sheets into it, stirring till the rubber sheets dissolved
completely, then add the resin solution. Such process should take not less
than 12 hours.