Examples of 'blocked isocyanates' in a sentence
Meaning of "blocked isocyanates"
blocked isocyanates - This phrase refers to the prevention or restriction of exposure to isocyanates, which are chemicals commonly found in various industrial products like paints and coatings
How to use "blocked isocyanates" in a sentence
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blocked isocyanates
Particularly suitable are blocked isocyanates and isothiocyanates.
These comprise compounds that can be referred to as self blocked isocyanates.
These blocked isocyanates are known in the art.
Difunctional and multifunctional blocked isocyanates are preferred.
Polymeric blocked isocyanates are useful in certain embodiments.
It is also possible to use blocked isocyanates.
Two or more blocked isocyanates may be used jointly.
Suitable cross linkers comprise one or more blocked isocyanates or urethanes.
The internally blocked isocyanates involve what are known as uretdiones.
A suitable way to prevent premature curing is to use internally or externally blocked isocyanates.
One method is to incorporate blocked isocyanates or melamine resins.
Examples thereof include compounds that have isocyanate groups or blocked isocyanates.
It is also possible to use blocked isocyanates in known manner.
Suitable urethanes may include one or both of urethane materials or blocked isocyanates.
Other commercially available blocked isocyanates are also suitable for use herein.
See also
The polyisocyanates used in the practice of this invention can be free or blocked isocyanates.
Difunctional and multifunctional blocked isocyanates or active methylene group blocked isocyanates are preferred.
Suitable cross linkers may include one or more blocked isocyanates or urethanes.
Blocked isocyanates made by reacting these diisocyanates with suitable blocking agents are also useful.
The last reference mentioned discloses a process for preparing blocked isocyanates useful as extenders.
Blocked isocyanates may also be used in order to address ingredient limitations and stability problems.
Tri - and tetrafunctional blocked isocyanates are particularly preferred.
Blocked isocyanates are particularly preferred as thermal cross-linkers.
Preferred cross-linking agents include the blocked isocyanates.
In addition, blocked isocyanates of the above-described diisocyanates may also be used.
This precludes the use of heat activated, blocked isocyanates.
Particularly preferred examples of blocked isocyanates are given below in Table 3 without being limited thereto.
The resin contains polyols and / or epoxies as well blocked isocyanates.
Contrary to the unblocked polyisocyanates, blocked isocyanates can be used to form stable one-package systems.
According to those documents, these are hydroxylated fluoridated copolymers and blocked isocyanates.
In comparison to the free isocyanates, the blocked isocyanates have significant advantages.
The blocked isocyanates mentioned immediately above are described in detail in U. S.
Preferably anhydride groups, carboxylic acids and blocked isocyanates are used.
Such blocked isocyanates are useful, for example, in baked coatings.
Other crosslinking agents include glycoluril resins, blocked isocyanates or epoxy resins.
Blocked isocyanates prepared from m-xylylene diisocyanate are known as taught by U.S. Patent No.
Other crosslinking agents include glycouril resins, blocked isocyanates or epoxy resins.
Suitable thermal crosslinkers are, for example, crosslinkers based on epoxides, melamine, or blocked isocyanates.
The use of isophorone diisocyanate-based, epsiloncaprolactam blocked isocyanates as crosslinker, is particularly preferred.
The heat-adhesive layer comprises a resin, free isocyanates and blocked isocyanates.
Preferred examples of active methylene group blocked isocyanates are given by Table 2.
Blocking agents and their mechanisms have been described in detail in " Blocked isocyanates III.
BN-27 is a water based polyurethane prepolymer comprising blocked isocyanates with 30 % solid.
The general reaction scheme for thermal crosslinking based on blocked isocyanates is given by,.
Aminoplast resins and phenol / formaldehyde adducts are most preferred, with blocked isocyanates being disfavored.
These agents include urethanes, polyurethanes, and blocked isocyanates.
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