Anti-fouling coating solution and method of manufacturing same
AssigneesSamsung Electronics Co., Ltd., Korea University Research and Business Foundation
InventorsKihun JEONG, Bitgaram KIM, Jihun SEO, Youngdeog KOH, Kwangjoo KIM
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Abstract
One aspect of the present disclosure may provide a polyurethane-based coating material and a coating solution including the same, wherein the polyurethane-based coating material may ensure mechanical rigidity on the basis of a polyurethane material and may simultaneously induce super-hydro-repellent properties, and thereby may achieve antifouling and antibacterial properties. An anti-fouling coating solution may include a fluorine-containing polyurethane polymer (FPU), a fluorine-containing urethane monomer (FU), and polytetrafluoroethylene (PTFE).
Claims15
An anti-fouling coating solution comprising:
- a fluorine-containing polyurethane polymer (FPU), a fluorine-containing urethane monomer (FU), and polytetrafluoroethylene (PTFE),
- wherein the FPU includes:
- a volatile solvent,
- a fluorinated alcohol represented by CaH2F2a-1OH (with a being a natural number of 10 or less) and containing a hydroxyl group bonded to an end,
- a fluorinated diol represented by CbH4F2b-4(OH)2 (with b being a natural number of 20 or less) and containing hydroxyl groups respectively bonded to both ends,
- an alcohol containing two or more hydroxyl groups, and
- a first isocyanate crosslinking agent containing two or more isocyanate groups,
- a ratio of a molar weight of the fluorinated diol of the FPU to a molar weight of the FPU ranges from 0.7 to 0.9,
- a sum of a number of hydroxyl groups contained in the fluorinated alcohol of the FPU, a number of hydroxyl groups contained in the fluorinated diol of the FPU, and a number of hydroxyl groups contained in the alcohol of the FPU is equal to a number of the two or more isocyanate groups contained in the first isocyanate crosslinking agent, and
- the FU includes:
- a fluorinated alcohol represented by CcH2F2c-1OH (with c being a natural number of 10 or less) and having a hydroxyl group bonded to an end, and
- a second isocyanate crosslinking agent containing two or more isocyanate groups.
A method of manufacturing an anti-fouling coating solution, comprising:
- producing a fluorine-containing polyurethane polymer (FPU) by:
- mixing a volatile solvent, a fluorinated alcohol represented by CaH2F2a-1OH (with a being a natural number of 10 or less) and containing a hydroxyl group bonded to an end, a fluorinated diol represented by CbH4F2b-4(OH)2 (with b being a natural number of 20 or less) and containing hydroxyl groups respectively bonded to both ends, an alcohol containing two or more hydroxyl groups, an isocyanate crosslinking agent including two or more isocyanate groups, and a catalyst to form a first solution,
- mixing a volatile solvent and an isocyanate crosslinking agent containing two or more isocyanate groups to form a second solution,
- mixing the second solution and the first solution at a temperature of 0° C. to 80° C. for 2 hours to 4 hours to form a third solution,
- mixing a volatile solvent and a fluorinated alcohol represented by CaH2F2a-1OH (with a being a natural number of 10 or less) and having a hydroxyl group bonded to an end to form a fourth solution, and
- mixing the fourth solution and the third solution at a temperature of 50° C. to 80° C. for 20 hours to 46 hours,
- producing a fluorine-containing urethane monomer (FU) by:
- pulverizing particles formed by stirring an isocyanate crosslinking agent including two or more isocyanate groups and a fluorinated alcohol represented by CcH2F2c-1OH (with c being a natural number of 10 or less) and having a hydroxyl group bonded to one end for 30 minutes to 2 hours, and
- mixing, with the produced FPU, the produced FU and a polytetrafluoroethylene (PTFE) satisfying a weight ratio of 3 of the produced FU to 1 of the PTFE.
Dependencies are inferred from the claim text.