Polyisocyanates blocked with diisopropyl malonate and their use in one-component coating compositions
AssigneeBayer MaterialScience AG
InventorsKouichi Katamura, Toshihiro Iwanaka, Tomokazu Shigemori, Hisafumi Tabana
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Abstract
The present invention relates to a blocked polyisocyanate composition containing A) a blocked polyisocyanate which is the reaction product of i) a polyisocyanate prepared from an aliphatic and/or alicyclic diisocyanate and ii) a malonic acid diester blocking agent containing at least 90 equivalent %, based on the total equivalents of blocking agent, of diisopropyl malonate, and B) a mono-functional active hydrogen-containing compound. The present invention also relates to a one-component coating composition containing these blocked polyisocyanate compositions and a polyhydroxyl compound.
Claims10
A blocked polyisocyanate composition comprising
- A) a blocked polyisocyanate which is the reaction product of
- i) a polyisocyanate prepared from an aliphatic and/or alicyclic diisocyanate and
- ii) a malonic acid diester blocking agent containing at least 90 equivalent %, based on the total equivalents of blocking agent, of diisopropyl malonate, and
- B) a mono-functional active hydrogen-containing compound.
A one-component coating composition comprising a blocked polyisocyanate composition and a polyhydroxyl compound, wherein the blocked polyisocyanate composition comprises
- A) a blocked polyisocyanate which is the reaction product of
- i) a polyisocyanate prepared from an aliphatic and/or alicyclic diisocyanate and
- ii) a malonic acid diester blocking agent containing at least 90 equivalent %, based on the total equivalents of blocking agent, of diisopropyl malonate, and
- B) a mono-functional active hydrogen-containing compound.
Dependencies are inferred from the claim text.