C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
400/5157, 204/91
C08K 5/29 (2006.01) C08F 2/50 (2006.01) C08F 299/04 (2006.01) C08K 5/15 (2006.01) C08K 5/17 (2006.01) C08L 67/06 (2006.01) G03F 7/031 (2006.01)
Patent
CA 1116777
ABSTRACT A photo-initiator system of a polyester resin is disclosed which consists of an oxime carbonate of a vicinal diketone (I), a photo-reducible dye (II) and an amine (III). This system is capable of polymerising and curing unsaturated polyester resins by irradiation with visible light to provide coatings, adhesives, castings and fibre reinforced composites. The formulae of the ingredients of the system are (I) Image where R' and R" are independently alkyl, aryl or aralkyl (R' preferably being CH3 and RN C2H5) (II) Image wherein X= Br or I on at least 2 positions Y= H Br, I,C1 z= H COOM, COOR wherein R = C1 - C5 alyl. M= H, K, Na, Li, NH4 (there preferably being 4X substituents which are Br and Z preferably being -COOM or -COOR), and wherein also 4Y substituents may be present and preferably be I) and (III) Image wherein R1 is H, alkyl, hydroxy-substituted alkyl, aryl or aralkyl. R2 is independently alkyl, hydroxyl substituted alkyl, aryl or aralkyl. The alkyl groups are preferably C1-C5, the aryl group phenyl and the aralkyl benzyl (preferred such compounds being tribenylamine and dibenzylethanolamine).
343412
Alexander Ian J.
Scott Roger J.
George H. Riches And Associates
Scott Bader Company Limited
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