Examples of 'isocyanate prepolymer' in a sentence
Meaning of "isocyanate prepolymer"
Isocyanate prepolymer: A type of chemical compound that is used in the production of various materials such as paints, coatings, adhesives, and foams. It is created through a process called prepolymerization where isocyanate compounds react with other chemicals to form a polymer structure
How to use "isocyanate prepolymer" in a sentence
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isocyanate prepolymer
This will form the isocyanate prepolymer.
The isocyanate prepolymer reacts with the diamine to yield the end polyurethane.
This mixture is reacted with a polyisocyanate to synthesize an isocyanate prepolymer.
Using these chain extenders for curing an isocyanate prepolymer yields elastomers having good physical properties.
The above mentioned isocyanate monomers are generally used as an isocyanate prepolymer.
The isocyanate prepolymer obtained has the following properties,.
So the limiting factor is the high viscosity of the isocyanate prepolymer.
According to the invention, the isocyanate prepolymer composition shows a substantially reduced viscosity.
The isocyanate component of the cross-linking agent may include an isocyanate prepolymer.
The isocyanate prepolymer is typically a reaction product of an isocyanate and a polyol and / or a polyamine.
The urethane composition includes a blocked, sterically hindered isocyanate prepolymer and a curing agent.
The isocyanate prepolymer is the reaction product of a polyol, a diisocyanate and a ketoxime blocking agent.
A process according to claim 1, characterised in that the liquid isocyanate prepolymer comprises a diphenylmethane diisocyanate composition.
A paint composition according to claim 5, wherein the component B is an aliphatic isocyanate prepolymer.
Example 4 was followed, except the isocyanate prepolymer was neglected.
See also
The blocked isocyanate prepolymer is formed in a two-step, one-batch process.
EXAMPLE 1 Preparation of a blocked isocyanate prepolymer.
An isocyanate prepolymer with 27 % NCO forms an adhesive that is too rigid.
The polymerization reaction of the isocyanate prepolymer is commonly referred to as " curing . ".
The adhesive of Claim 1, wherein the polyisocyanate is an isocyanate prepolymer.
A preferred isocyanate component is a isocyanate prepolymer Vorite 689 derived from castor oil ( available from Caschem Company ).
This mixture was subjected to reaction at 65°C for 3 hours to synthesize an isocyanate prepolymer.
TDI derivative is, for example, terminal isocyanate prepolymer derivatives.
Importantly, this is an example of a blend of an isocyanate prepolymer and PVP K90.
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Examples of using Isocyanate
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The isocyanate can be aromatic or aliphatic in nature
In certain embodiments the isocyanate reagents are diisocyanates
Isocyanate uretodiones and polyuretonimines are in this category
Examples of using Prepolymer
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It corresponds to a prepolymer with a high degree of hydrolysis
Prepolymer mixtures may include or consist of oligomers
The maximum amount of prepolymer is not critical
