Blocked polyisocyanurate and polyvinyl chloride plastisol composition containing the same
AssigneeSunstar Engineering Inc.
InventorsYoshihiro Nakata, Hirohide Tomoyasu
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Abstract
Provided are novel blocked polyisocyanurates to be suitably used as an adhesiveness providing agent, coating material, sealant and crosslinking agent for polymers containing active hydrogens. Also provided are polyvinyl chloride plastisol compositions comprising a polyvinyl chloride resin, the above blocked polyisocyanurate as an adhesiveness providing agent, plasticizer and a specific agent for accelerating dissociation of the blocked polyisocyanurate. These compositions have excellent properties such as high adhesiveness even cured at low temperatures and resistance to yellowing, and are suitably used particularly as sealants for car body.
Claims6
A polyvinyl chloride plastisol composition comprising a polyvinyl chloride resin, a plasticizer, a blocked polyisocyanurate as an adhesiveness providing agent represented by the following general formula (1) ##STR4## wherein X, Y and Z each independently represents a residue derived by elimination of the isocyanate groups of an aliphatic diisocyanate or an alicyclic diisocyanate, and n represents an integer of 1 to 10, and at least one catalyst that accelerates dissociation of the adhesiveness providing agent and is selected from the group consisting of dibutyltin diacetate, zinc octoate, stannous octoate, dibutyltin dimaleate and triethylenediamine.
Dependencies are inferred from the claim text.