C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 3/32 (2006.01) B05B 15/04 (2006.01) C02F 1/52 (2006.01) C09D 7/00 (2006.01)
Patent
CA 2083984
ABSTRACT The present invention relates to a novel method for coagulating waterborne paints in paint spray booth recirculating water. The coagulant aid comprises a polynucleate hydroxy silicate-sulphate compound (hereinafter PASS) having the following average composition of the general formula: Al(OH)B(SO4)C(SiOX)D(H2O)E wherein B ranges from 0.75 to 2.0; C ranges from 0.30 to 1.12; D ranges from 0.005 to 0.1; X is greater than 2.0 but less or equal to 4.0 such that 3=B+2C+2D(X-2) E is 1.5 to 4 when the product is in solid form; and E is larger than 4 when the product is in aqueous form, which may optionally be used together with alum or a mixture of alum and a polyamine. The coagulant aids of this invention may also be used advantageously with detackifying agents to simultaneously detackify and coagulate solvent based paint particles.
Curran Thomas Peter
Mitchell David Brian
Betzdearborn Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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