C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 4/52 (2006.01) C09J 4/00 (2006.01) C09J 4/02 (2006.01)
Patent
CA 2229134
Systems for initiating the polymerization of acrylic monomers comprising (1) organoborane amine complexes and (2) bireactive decomplexers preferably comprising at least one free-radically polymerizable group and at least one amine-reactive group in the same molecule. The decomplexer is capable of forming a covalent bond with both the acrylic monomers and amine complex, resulting in a reduced level of mobile constituents. Furthermore, when the organoborane amine complex of the initiator system comprises a polyamine compound, polymerized acrylic compositions having improved solvent resistance are advantageously provided.
L'invention porte sur des systèmes permettant d'amorcer la polymérisation de monomères acryliques comportant (1) des complexes amine-organoborane ainsi que (2) des agents décomplexants biréactifs comportant, de préférence, au moins un groupe susceptible de polymérisation radicalaire et au moins un groupe aminoréactif dans la même molécule. L'agent décomplexant est capable de liaison covalente tant avec les monomères acryliques qu'avec le complexe amine, ce qui se solde par un niveau réduit de constituants mobiles. Lorsque, de surcroît, le complexe amine-organoborane du système initiateur comporte un composé à base de polyamine, on obtient, avec profit, des compositions polymérisées acryliques possédant une résistance améliorée aux solvants.
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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