C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 5/44 (2006.01) C07D 301/14 (2006.01) C07D 303/40 (2006.01) C07D 407/14 (2006.01) C07D 493/10 (2006.01) C08G 59/24 (2006.01) C08G 59/32 (2006.01) C09D 5/46 (2006.01) C09D 133/06 (2006.01) C09D 167/00 (2006.01) C08L 63/00 (2006.01)
Patent
CA 2325271
Powder coating compositions comprising a binder selected from carboxyl-group- containing polyesters, carboxyl-group-containing poly(meth)acrylates and mixtures of the said substances, and one or more epoxy compounds, wherein the epoxy compounds comprise at least one compound of formula (I) that is solid at 25°C: (see formula I) wherein A corresponds to a group of formula (II), (III), (IV) or (VI): (see formula II);~(see formula III); (see formula IV) or (see formula VI); in which B is an x-valent organic radical that is derived from a polyol having x or more hydroxyl groups by the removal of x hydroxyl groups; E is a (2x)-valent organic radical that is derived from a polyol having (2x) or more hydroxyl groups by the removal of (2x) hydroxyl groups; and D is a (y + 2z)-valent radical that is derived from a polyol having (y + 2z) or more hydroxyl groups by the removal of (y + 2z) hydroxyl groups; R1 and R5 are each independently of the other hydrogen, halogen, C1-C4alkyl or C1-C4alkoxy or are together a methylene group; and R2, R3, R4, R6, R7, R8 and R9 are each independently of the others hydrogen, halogen, C1-C4alkyl or C1-C4alkoxy; and x is an integer of at least 3; y is an integer from 1 to (x - 1) and z is (x - y), are distinguished by very good flow behaviour and yield a cured material that has a high crosslinking density and good weather resistance.
Francois Jacques
Rickert Christoph
Tena Mireille
Turpin Francois
Fetherstonhaugh & Co.
Vantico Ag
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