Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
  • C09D5/08—Anti-corrosive paints
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
  • C09D133/04—Homopolymers or copolymers of esters
  • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
  • C09D133/08—Homopolymers or copolymers of acrylic acid esters
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
  • C09D133/04—Homopolymers or copolymers of esters
  • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
  • C09D133/10—Homopolymers or copolymers of methacrylic acid esters
  • C09D133/12—Homopolymers or copolymers of methyl methacrylate
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L2205/00—Polymer mixtures characterised by other features
  • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group

Definitions

• underbody of a vehicle is frequently subjected to water from the road surface. Also hard and abrasive particles of grit or similar matter, together with water, especially salty water, make for a very harsh environment. Underbody structural components are typically coated to provide a first line of defense against corrosion. It is common practice to provide a coating to the metallic underbody of an automobile to protect the underbody from attack by road salt, water, and impinging road debris which cause rust and corrosion of the automobile underbody. Thus, underbody coatings are critical to automobile aesthetics (particularly that related to cabin acoustics), durability, resistance to chemical or physical impact and cost.
• the coating composition as presently described in this invention can be air dried and offers superior fuel resistance and very high wear resistance. Further, although most of the coating materials exhibit the basic requirements like anticorrosion property, there is always a shortfall of stringent OEM [Original equipment manufacturer] requirements such as superior anti chipping and anti-corrosive properties. It has been seen that although underbody coating products pass all the internal quality tests, certain problems are encountered with these coatings when subjected to very harsh durability conditions.
• the most preferred alkyl (meth) acrylate monomers for the combination that constitutes acrylic resin B includes, but is not limited to n-butyl methacrylate and methyl methacrylate combination.
• the acrylic resin B is present in an amount of from 1 - 30 weight percent, more preferably from 1 -20 weight percent, and most preferably about 16 weight percent based on the total weight of the composition.
• "Epoxy resins" are generally described by the type of central organic moiety or moieties to which the 1 , 2-epoxy moieties are attached.
• Non-exclusive examples of such central moieties are those derived from bisphenol A, bisphenol F, novolak condensates of formaldehyde with phenol and substituted phenols, the condensates containing at least two aromatic nuclei; triazine;
• Non-exclusive examples of epoxy resins useful for the present invention include glycidyl ethers of a polyhydric phenol, such as bisphenol A (a particularly preferred species of polyhydric phenol), bisphenol F, bisphenol AD, catechol, resorcinol, and the like.
• a polyhydric phenol such as bisphenol A (a particularly preferred species of polyhydric phenol), bisphenol F, bisphenol AD, catechol, resorcinol, and the like.
• n is the number of carbon-carbon double bonds present in the alkenyl side chain and is typically 0,1,2 or 3.
• the carbon-carbon double bonds may be conjugated or non-conjugated.
• compounds having the above generalized structure may be employed to modify the epoxy resin.
• the Epox resin has a molecular weight of 3000 and hydroxyl equivalent of about 720.
• the Epox imparts excellent adhesion to metal because of the free hydroxyl groups, gives good flexibility to the system and provides superior chemical resistance.
• the Epox resin is preferably an epoxy ether resin.
• Calcium Naphthanate Acts as an cross-linking agent and improves hardness of dried film as well as its adhesions.
• the drier combination is present in the composition of the present invention in an amount of upto 5 weight percent, or in some cases upto 4 weight percent, or in some cases 3 weight percent with the weight percent being considered based on the total weight of the composition
• the anti-corrosive composition comprises about 0.1 to 1 weight percent of the drier combination based on the total weight of the composition.

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• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)
• Paints Or Removers (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=47178933

Family Applications (1)

Country Status (7)

Cited By (4)

Families Citing this family (9)

Citations (6)

Family Cites Families (17)

• 2012
  • 2012-10-25 CA CA2853450A patent/CA2853450A1/en not_active Abandoned
  • 2012-10-25 US US14/353,377 patent/US20140296384A1/en not_active Abandoned
  • 2012-10-25 JP JP2014538972A patent/JP2014530954A/ja active Pending
  • 2012-10-25 WO PCT/US2012/061778 patent/WO2013063184A1/en not_active Ceased
  • 2012-10-25 BR BR112014009942A patent/BR112014009942A2/pt not_active Application Discontinuation
  • 2012-10-25 AU AU2012328817A patent/AU2012328817B2/en not_active Ceased
  • 2012-10-25 CN CN201280052267.4A patent/CN103987799B/zh not_active Expired - Fee Related

Patent Citations (6)

Non-Patent Citations (1)

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