Patent ID: 9596845
Date: 2017-03-21
CPC Classifications: A01N

Claim:
1. Biocidal formulations in aqueous suspension of microcapsules based on 3-iodo-2-propynyl butyl carbamate (IPBC), comprising (parts by weight): (1) 10-60 parts of polymeric microcapsules, wherein the microcapsules are water insoluble and obtainable by in situ polymerization by polycondensation, the microcapsule polymer being polyurea, the microcapsules comprising IPBC and a coformulating agent comprising one or more alkylbenzenes, linear or branched having a number of carbon atoms from 9 to 20, the microcapsules showing an IPBC encapsulation efficiency higher than 90%, and the coformulating agent having a boiling point in the range 160° C.-310° C.; (2) 1-5 parts of one or more dispersants; (3) 1-20 parts of one or more excipients selected from thickeners, antifoam, antifreeze, antimould agents; and (4) water to 100, wherein the microcapsules have sizes of 1-30 micron.