C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/06 (2006.01) C08G 18/32 (2006.01) C08G 18/58 (2006.01) C08G 18/62 (2006.01) C08G 18/80 (2006.01) C08L 75/04 (2006.01) C09D 5/44 (2006.01) C25D 13/06 (2006.01)
Patent
CA 2070132
43359CAN5A POLYISOCYANATES PARTIALLY BLOCKED BY AMINES AND SELF-CURING RESINOUS ADDUCTS DERIVED THEREFROM Abstract of the Disclosure A resinous adduct comprises the reaction product of polyisocyanate partially blocked by at least one amine and a resinous material. The partially blocked polyisocyanate has the formula: Image R1 is the organic residue of an aliphatic, aromatic, or aliphatic-aromatic polyisocyanate and R2 is methyl or ethyl. Each of a and b are integers greater than 1 and their sum is 2, 3 or 4. The resinous material has an isocyanate reactive functionality. The resinous material may have the following structure: Image . It may also have the following structure: Image . R3, R4, R5 and R6 are monomer-forming chemical moieties or polymerization products thereof. R7 and R8 are the backbone portions of vinyl or an acrylic group-containing monomers. Q1, Q2, Q3, Q4 and T are chemical moieties which may be reactive with isocyanate functionality. L is a chemical moiety which is reactive with isocyanate functionality. The value of x is greater than or equal to 1 and the value of y is greater than or equal to 0.
Pocius Alphonsus V.
Wilson Thomas H. Jr.
Minnesota Mining And Manufacturing Company
Smart & Biggar
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