| blocking agent |
blocker: a class of drugs that inhibit (block) some biological process
Ãâó: wordnet.princeton.edu/perl/webwn
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| blocking agent |
Isocyanates, normally extremely reactive with water, can only be used in waterborne coatings if they can be prevented from reacting before the water is baked out of the paint film. This is done by capping or blocking the isocyanate group with a thermally decomposable chemical. In a bake oven, the water evaporates, the chemical cap decomposes and the isocyanate crosslinks the paint. Blocked isocyanates are often employed for E-coat curing.
Ãâó: www.etfinancial.com/coatingsgloss.htm
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