US 9,808,014 B2
Active-powder biocidal composition comprising at least one copper salt and at least one zinc salt and the method for the production thereof
Luis Alberto Amestica Salazar, Comuna Providencia (CL)
Assigned to Textil Copper Andino S.A. [CL/CL], Comuna Providencia (CL)
Appl. No. 14/362,238
Filed by Luis Alberto Amestica Salazar, Comuna Providencia (CL)
PCT Filed Dec. 16, 2011, PCT No. PCT/CL2011/000081
§ 371(c)(1), (2), (4) Date Jul. 11, 2014,
PCT Pub. No. WO2013/086647, PCT Pub. Date Jun. 20, 2013.
Prior Publication US 2014/0356404 A1, Dec. 4, 2014
Int. Cl. A01N 59/20 (2006.01); A01N 59/16 (2006.01); D06M 16/00 (2006.01); D01F 1/10 (2006.01); C09D 5/14 (2006.01); A01N 25/12 (2006.01)
CPC A01N 59/20 (2013.01) [A01N 25/12 (2013.01); A01N 59/16 (2013.01); C09D 5/14 (2013.01); D01F 1/103 (2013.01); D06M 16/00 (2013.01)] 15 Claims
 
1. An antibacterial and antifungal biocide composition for inclusion in a polymer-based product consisting of:
a first copper-based salt;
a second zinc-based salt; and
a third salt, said third salt being either copper-based or zinc-based;
wherein
the number of moles of copper salts in said composition is from 1 to 10 times the number of moles of zinc salts in said composition;
at least one of said first, second, or third salts has a particle size of no greater than 0.5 microns;
said salts are selected so as to collectively have solubility constants (Ksp) in the range of 1*10-20 to 9*10-6;
at least 1% by weight of the salts in said composition have a Ksp in the range of 9*10-11 to 9*10-6;
the composition consists of three mole fractions where the fractions are selected such that a first mole fraction (M1) of said salts has a Ksp in the range of from 9*10-11 to 9*10-6, a second mole fraction (M2) of said salts has a Ksp in the range of 9*10-11 to 9*10-16, and a third mole fraction (M3) of said salts has a Ksp in the range of 9*10-16 to 1*10-20; M1+M2+M3=the entire composition; and
the composition conforms to the following formula:
100*M1+50*M2+25*M3>=80.