Spray Urethane and Spray Urea

Chemical Raw Material for Spray Urethane and Spray Urea, Yourun's products
include:
Polyurethane/Polyurea Catalysts
Defoamer (Defoaming Agent)
Rheological Agent
Anti-abrasion Agent (Anti-wearing Agent)
Antistatic Agent.
Main Advantages of the Spray Urethane and Spray Urea:
Two component spray polyurethane/urea chain extender components contains polyol
(usually PPG) which has the similar reaction rate with MDI as that of H2O. If
catalysts such as organic bismuth tin, which have a strong catalytic effect on
water (sensitive to moisture), are selected, even if the raw materials are
completely dehydrated, it cannot avoid adverse phenomena such as foaming,
bulging, peeling, and cracking caused by the reaction of trace moisture with
isocyanates to produce CO2 when constructs on high-temperature summer and
humid substrates.
CUCAT-HA02 has unique targeted catalytic properties and extremely high
catalytic activity that do not catalyze the reaction of trace moisture with
isocyanates. It is used for spraying polyurethane/urea coatings and has the
following prominent characteristics:
The gel is dense and has higher strength without bubbles. Generally, the
strength is increased by 10 to 30% compared to using tin bismuth catalysts.
Improve the undesirable phenomenon of hollowing and peeling, and improve the
adhesion fastness between the coating and the base surface. It greatly reduce
the influence of wet substrate and water vapor on the coating under high
temperature and high humidity conditions, and avoid the problem of hollowing
and peeling caused by gas accumulation at the bonding interface caused by the
use of organic bismuth catalyst.
The formula is flexible in material selection to further reduce the
cost. Minimize the use of expensive amine terminated polyether and aromatic
amine (DETDA / E100). Allow more PPG to be used in the formula, even allow the
use of low activity diamines such as MOCA to replace DETDA as component P, and
there will be no adverse phenomena such as foaming and bulging. While the use
of ordinary bismuth catalyst to reduce the amount of DETDA or MOCA is very easy
to foaming and bulging.
High catalytic activity, low usage, fast increase in viscosity and initial
strength.

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