Examples of 'blocked isocyanate' in a sentence
Meaning of "blocked isocyanate"
Blocked isocyanate refers to a chemical compound, isocyanate, that has been prevented from reacting or combining with other substances due to some obstruction or hindrance
How to use "blocked isocyanate" in a sentence
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blocked isocyanate
Blocked isocyanate curing agent to be mixed with.
Preferably the dispersions contain only water and blocked isocyanate.
A blocked isocyanate was also added to the dispersion.
The sizing composition of the present invention comprises a blocked isocyanate.
Blocked isocyanate polyurethane mixtures were formulated as follows.
One component compositions comprising a blocked isocyanate also exhibit several disadvantages.
A blocked isocyanate and a polyol are suitable polymerizable reactants.
Hydroxy groups are necessary when the crosslinking agent is melamine or blocked isocyanate.
Blocked isocyanate curing agent.
The resultant product can be described as a partially capped or partially blocked isocyanate.
Examples of blocked isocyanate compositions can be found in various patents.
Polyurethanes as used herein may denote those comprising free or blocked isocyanate groups.
Blocked isocyanate curing agent to be mixed with cationic resin.
The isocyanate group and the blocked isocyanate group are high level in toxicity.
This blocked isocyanate curative is incorporated in a step separate from the polymerization.
See also
The above urethane resin may be a urethane resin having a blocked isocyanate group.
Suitable blocked isocyanate compounds include imidazole blocked isocyanatoethyl methacrylate.
The sizing composition of the present invention comprises a blocked isocyanate and a maleic anhydride copolymer.
The same blocked isocyanate functional groups as the first blocked isocyanate are preferred.
In certain embodiments, a crosslinker comprises blocked isocyanate groups.
Use of a blocked isocyanate prevents this reaction from taking place at room temperature.
In the case of an isocyanate crosslinking agent, a blocked isocyanate is preferred.
The blocked isocyanate suitably can be used to improve thixotropy and adhesive properties.
These one component compositions have a blocked isocyanate functionality in combination with a film forming polymer.
The blocked isocyanate to be utilize in step B comprises an isocyanate portion and a blocking portion.
During the autoclaving cycle, the blocked isocyanate groups are unblocked.
Blocked isocyanate curing agent to be mixed with cationic resin None None.
A dissociation temperature of the blocked isocyanate curing agent is important to the present invention.
Polyisocyanates can be used with free and / or blocked isocyanate groups.
Compounds with blocked isocyanate groups have become known as highly effective extenders.
Alternatively, waterborne systems have been formulated by using blocked isocyanate groups.
The desirability of adding a blocked isocyanate depends on the particular application for the copolymer.
The curable composition of claim 3 wherein the curing agent is a blocked isocyanate.
The surfactant for emulsifying the blocked isocyanate is preferably nonionic surfactants and cationic surfactants.
The method of claim 1 wherein the composition further comprises a blocked isocyanate.
Thereafter, blocked isocyanate curing agent is mixed therein.
Crosslinkability of the composition by adding, inter alia, a blocked isocyanate is mentioned as an option.
Suitable blocked isocyanate cross-linkers are commercially available.
Further, the polyurethane may be part of a dispersion comprising a polyurethane and a blocked isocyanate.
When the glass fibres with blocked isocyanate compound are exposed to unblocking conditions, e . g.
The coating comprises a polyvinyl nucleophilic polymer and a urethane and / or a blocked isocyanate.
The blocked isocyanate emulsion can be produced, for example, in the following manner.
Accordingly, a limitation of dissociation temperature of the blocked isocyanate curing agent is not necessary.
This patent discloses blocked isocyanate curing agents prepared by reacting m-xylylene diisocyanate with a ketoxime.
The use of blocked crosslinking groups, such as blocked isocyanate groups, may be beneficial.
The usual blocked polyisocyanates or non-yellowing blocked polyisocyanates can be used for the blocked isocyanate.
Alternatively, both hydroxyl and blocked isocyanate groups can be present on the same polymer.
The resulting reaction product may have free, blocked or partially blocked isocyanate groups.
Additionally, the principal resin and the blocked isocyanate crosslinkers must be prepared in separate processes.
Preferably, the clearcoat composition comprises a mixture of alkylated melamine and a blocked isocyanate crosslinker.
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The water tap is blocked or there is limescale on it
Blocked spray gun filter or pump high
Roads may also be blocked by seasonal rivers
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
