US 2022/0015358 A1Published application

Encapsulated Biocides

AssigneeLonza Ltd.

InventorsStefan Ellinger, Brittany Caldwell, Katrina Staggemeier, Shujun Wang, Simone Verdi, Joachim Kerber, Kevin E. Janak, Ulrich Mayerhoeffer, Monika Jobmann, Alexandra Latnikova, Roshanak Lowe

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Abstract

The invention discloses a method for protecting coating compositions selected from the group consisting of architectural (interior and exterior) and marine paints and coatings, sealants (for example PU, Epoxy, Silicone), fishnet coatings, construction paints and coatings, oil and gas coatings, wood composite coatings and wood composites plastics, flooring paints and coatings, and combinations thereof; against microorganisms by the use of microencapsulated biocides, wherein the encapsulation is realized with a polyurea polymer.

Claims22

Dependent claims

A method METHENCAPS for preparation of microcapsules MICROCAPS;

with MICROCAPS comprising a biocide BIOC and a microencapsulation material MICROENCAPSMAT;
BIOC is a biocide that is active against microorganisms;
MICROENCAPSMAT comprises a polyurea polymer POLYUREAPOLYM;
METHENCAPS comprises a polymerization POLYM of a polyisocyanate ISOCYAN in the presence of water, or of ISOCYAN with a polyamine, or by a combination of both;
POLYM provides POLYUREAPOLYM;
BIOC is present during POLYM and is microencapsulated by MICROENCAPSMAT during POLYM;
wherein
BIOC is present in POLYM in solid form;
POLYM is done in the presence of a solvent SOLVOIL, SOLVOIL is selected from the group consisting of ethyl acetate, xylene, MTBE, and toluene.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/294,128Filed 14 Nov 2019
Priority: EP 18206778.516 Nov 2018
Published: 20 Jan 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

A01N 25/28
In coated particulate form: microcapsules or nanocapsules
A01N 47/30
Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<: derivatives containing the group >N—CO—N aryl or >N—CS—N—aryl
C09D 5/14
Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced ; Filling pastes: paints…
A01N
Preservation of bodies of humans or animals or plants or parts thereof