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Adhesives Ingredients
The material selection platform
Adhesives Ingredients

General Purpose Natural Rubber PSA

Adhesives Formulation | Supplied by Royal Elastomers (Royal Adhesives & Sealants)

Applicable Base Polymer Properties

Natural rubber is generally available as a light brown, slightly viscous solvent solution or as a latex. It has:

  • Poor elevated temperature resistance without vulcanization
  • Good resistance to water and to mold, but poor resistance to oil, solvents, and low temperatures 

It is often used in medical applications because of its low toxicity, but recent history has shown that certain individuals may be allergic to natural rubber latex.

Typical Formulation Ingredients

Ingredient
Parts by weight
SIR 20 natural rubber (Astlett) 
xxx 
Vanox 2246 antioxidant (R.T. Vanderbilt) 
x 
SBR 1502 styrene butadiene rubber (Astlett Rubber) 
xx 
Zinc oxide 
xx 
DPR® 400 depolymerized natural rubber (Royal Elastomers) 
xx 
SP 1056 heat reactive resin (SI Group) 
xx 
Nevtac 115 C5 type resin (Neville Chemical Company) 
xx 
Toluene 
xxx 

Typical Properties

Properties
Rolling ball tack (PSTC-6), cm 
xxxx 
180° peel strength (PSTC-1), N/cm 
xxxx 
Shear adhesion (PSTC-7) 1000 gm weight, hrs 
xxxx 

Processing

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Resulting Properties

In this general purpose pressure sensitive adhesive, the solvents results in fast drying and the additives will provide good cohesive strength without sacrificing tack. The surfaces will irreversibly adhere when pressed together.

A formulation by Royal Elastomers.

Tips and Tricks

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