Reactive compositions containing blocked polyisocyanates and amine-functional resins

Patent 6060574 Issued on May 9, 2000. Estimated Expiration Date:

April 7, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3770703

3912566

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Inventor:

Inventors

Application

No. 287875 filed on 04/07/1999

US Classes:

528/45, From at least one blocked -N=C=X group528/60, With reactant compound containing three or more XH, -C(=X)-XH, -NH, =NH, or HNH groups or combination thereof528/61, With organic nitrogen reactant which contains two NH, =NH, or HNH groups528/73Reactant contains at least one heterocyclic ring

Examiners

Primary: Gorr, Rachel

Attorney, Agent or Firm

Gil; Joseph C., Roy; Thomas W.

Foreign Patent References

1644813 DE. 01/21/1971
1399257 GB. 07/21/1975

International Class

C08G 018/80

Foreign Application Priority Data

1998-04-15 DE

Abstract

The present invention relates to a reactive composition containingA) an organic polyisocyanate having a number average molecular weight (excluding the blocking agent) of 168 to 25,000, wherein the isocyanate groups are reversibly blocked with a hydrocarbon resin containing phenolic OH groups,B) at least one organic polyamine having at least two primary amino groups andC) optionally a compound containing oxirane groups.The present invention also relates to the use of these reactive systems for the preparation of coatings, adhesives, sealants, embedding compounds or molded articles.