Blends of encapsulated biocides

Blends of encapsulated biocides

  • CN 101,037,554 B
  • Filed: 03/02/2007
  • Issued: 06/12/2013
  • Est. Priority Date: 03/16/2006
  • Status: Active Grant
First Claim
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1. coating composition comprises:

  • A. the biocides of microcyst, it contains isothiazolones biocides or stainproofing agent as core substance, and this core substance is encapsulated in and is selected from that following dimethylbenzene is gone up impermeable substantially and wall material that water can leach biocides from it;

    (i) polyvinyl acetate-resol, the wall thickness of hydrolysis are that 0.1-0.2 micron or shell/nuclear weight compare the amino-melocol for amino-melocol of 0.03/1-0.05/1, doping 2-10 % by weight doping agent, and described doping agent is selected from polyvinyl acetate, Natvosol, hydroxypropylcellulose, methylcellulose gum, hydroxyethylmethyl-cellulose, Vltra tears, hydroxy butyl methyl cellulose, Type 3U and the polyoxyethylene glycol of partially or completely hydrolysis;

    (ii) double-walled micro-capsule, it is selected from the first interface cyst wall is that acrylate copolymer/second wall is PVA-urea-resorcinol-gluteraldehyde polymkeric substance, the first interface cyst wall is that acrylate copolymer/second wall is PVA-urea-resorcinol-formaldehyde polymkeric substance, the first interface cyst wall be aromatic polyisocyanate the surface reaction product/the second wall is PVA-urea-resorcinol-formaldehyde condensation polymer, the first interface cyst wall is that melamine-formaldehyde/second wall is PVA-urea-resorcinol-formaldehyde polymkeric substance, the first interface cyst wall is that melamine-formaldehyde/second wall is PVA-urea-resorcinol-gluteraldehyde polymkeric substance, the first interface cyst wall is that PVA-urea-resorcinol-formaldehyde polymkeric substance/second wall is melamine-formaldehyde, the first interface cyst wall is that gelatin/gum arabic/second wall is melamine-formaldehyde or urea-resorcinol-formaldehyde condensation polymer, the first interface cyst wall is that melamine-formaldehyde/second wall is PVA,(iii) many shells micro-capsule, it is selected from first wall is that aromatic isocyanate reaction product/second wall is that gelatin-Arabic gum/3rd skin is melamine-formaldehyde;

    B. isothiazolones biocides or stainproofing agent dissociate;

    C. film-forming polymer or tackiness agent;

    WithD. one or more solvents;

    Wherein, with composition weight meter, the concentration of described free isothiazolones biocides or stainproofing agent is 0.25% reduce to surpass the concentration of 20 ℃

    to the glass transition temp that does not make described film-forming polymer.

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