Home / Products / Shoe Adhesive / Hardener / Excellent anti-yellowing Good Effect polyisocyanate Hardener for Shoe Primers

Excellent anti-yellowing Good Effect polyisocyanate Hardener for Shoe Primers

R820 is a polyisocyanate hardener with excellent yellowing resistance and moderate crystallization efficiency. It is mainly used with solvent-based polyurethane adhesives and can significantly enhance tensile strength, heat resistance, and hydrolysis resistance.
Availability:
Quantity:
facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
sharethis sharing button
  • R820

  • YRBEST


I.  PRODUCT SPECIFICATION

Appearance

Colorless transparent

Active Ingredient

Polyisocyanate

Solid Content

25.0±2.0%

NCO Content

4.5±1.5%

Storage Temperature

5-35℃

Shelf Life

6 months

Solvent Composition

Refer to product MSDS

Packaging

0.8 kg/can, 12 cans/carton


II.  GUIDELINES FOR USE

1. After adding the hardener to the adhesive, stir well before use.

2. On rainy or highly humid days, increase the hardener dosage by 1%.

3. Use the mixture within 4 hours after adding the hardener.

4.Aluminum containers of hardener should be tightly sealed after opening to prevent crystallization or loss of efficacy.




Humidity

≤80%

>80%

Hardener ratio

4-5%

5-6%




III.  PRECAUTIONS

1. Be sure to test before mass production.

2. This product is a chemical substance. Keep away from children, fire, and moisture.

3. Store in a cool, dry place (5–35℃).

4. For detailed information, refer to the MSDS.


Previous: 
Next: 
Innovating technology to adhere to the future, building a platform to achieve dreams.

PRODUCT CATEGORY

QUICK LINKS

CONTACT US

 Room 1701, No. 1, Haitong 4th Street, Nansha Street, Nansha District, Guangzhou (Office Only), Guangzhou, Guangdong, China
 +86-17502026718
 +86-20-39005284
Copyright © 2023 Guangdong YRBEST Polymer Technology Co., Ltd. All rights reserved. Technology By Leadong.com | Sitemap 
We use cookies to enable all functionalities for best performance during your visit and to improve our services by giving us some insight into how the website is being used. Continued use of our website without having changed your browser settings confirms your acceptance of these cookies. For details please see our privacy policy.
×