Water Based Pipeline Primer
OwnerMartin Sorensen, Keith Jacksoninventors
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Abstract
A water based primer and a method for protecting iron or steel materials against corrosion by first priming with a water borne primer composition containing a) a binder of one or more acrylic copolymers based on one or more acrylic monomers and one or more chlorinated monomers, b) a corrosion inhibiting pigment, c) one or more further pigments, d) optionally conventional additives and/or adjuvants, and e) water and then coating with a bituminous material. Contrary to the current primers on organic solvent basis the water borne primer gives low to no emission of volatile organic compounds (VOCs) and still fulfils the requirements for anti-corrosive effect, cohesive and adhesive strength.
Claims16
A method for protecting iron or steel materials against corrosion by priming with a water borne primer composition comprising,
- a) a binder of one or more acrylic copolymers based on one or more acrylic monomers and one or more chlorinated monomers,
- b) a corrosion inhibiting pigment,
- c) one or more further pigments,
- d) optionally conventional additives and/or adjuvants, and
- e) water.
- and coating with a bituminous material.
A primer in an aqueous composition comprising,
- a) a binder of one or more acrylic copolymers based on one or more acrylic monomers and one or more chlorinated monomers,
- b) a corrosion inhibiting pigment,
- c) one or more further pigments,
- d) optionally conventional additives and/or adjuvants, and
- e) water.
A primer according to claim, wherein the acrylic copolymer basis (a) includes acrylic monomers and monomers of mono- and/or di-halogenated C2-C12-olefins.
A method of using a primer for protecting materials against corrosion comprising:
- priming with the primer comprising,
- a) a binder of one or more acrylic copolymers based on one or more acrylic monomers and one or more chlorinated monomers,
- b) a corrosion inhibiting pigment,
- c) one or more further pigments,
- d) optionally conventional additives and/or adjuvants, and
- e) water;
- and
- coating with a bituminous material.
Dependencies are inferred from the claim text.