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UV Curable Low Surface Energy Coatings for Fouling Release and Anti-Graffiti Applications

Technology Benefits: Coatings are solvent, water, and acrylate free, eliminating health hazardsassociated with acrylates.∩é╖ Low cost of manufacturing due to low levels of siloxane used.∩é╖ Does not suffer from oxygen inhibition

Detailed Technology Description: This invention relates to the synthesis of siloxane-modified unsaturatedpolyester oligomers, blending the oligomers with vinyl ethers and aphotoinitiator, and curing the formulation to form a coating that has lowsurface energy. A monohydroxy, a telechelic, and a dihydroxy terminatedPDMS is used for unsaturated polyester synthesis, which is then UV-cured withtriethyleneglycol divinylether as the reactive diluent. These coatings aresolvent-free and can be crosslinked within a few minutes.

Supplementary Information: Inventor: Webster, Dean C. | Ravindran, Neena | Vora, Ankit
Priority Number: US8703838B2
IPC Current: B32B001710 | C03C002510 | C08G007704 | C08J000704
US Class: 522148 | 427515 | 428447 | 522107 | 522172 | 528026
Assignee Applicant: NDSU Research Foundation,Fargo
Title: UV-curable low surface energy coatings
Usefulness: UV-curable low surface energy coatings
Summary: For preparing ultra violet (UV) curable coating formulation for preparing an article comprising paper, wood, plastic, metal, glass and ceramic having low-surface energy coating (claimed).
Novelty: New unsaturated polyester comprising hydroxyalkyl-functional siloxane prepared by polycondensation of unsaturated diacid/diacid anhydride monomers and polyol monomers, useful in preparing ultra violet curable coating formulation

Industry: Chemical/Material

Sub Category: Chemical/Material Application

*Abstract: Scientists at NDSU have invented a novel polyester composition that is UV-curable and exhibits low surface energy. The composition contains polydimethuylsiloxane (PDMS) and involves mixing polyesters with coreactantsand photoinitiators, and curing the compounds using either visible of ultraviolet(UV) light. These coatings are useful in applications where low surface energy is desired such as marine ship hulls, anti-graffiti surfaces, release coatings, and protective wood coatings with easily cleanable surfaces.

*Principal Investigator: Name: Bret Chisholm
Department:

Country/Region: USA

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