Additive, composition comprising it and use thereof
Composition containing at least one poly acrylate (co)polymer binder and at least one of a condensation product formed by reaction of an effective 1-naphthol and formaldehyde, and a naphthalene molecule substituted in at least one of positions 1 to 8 with a sulfur-containing radical.
1. A composition comprising
a) at least one poly acrylate (co)polymer binder and
b) at least one of
(i) a condensation product formed by reaction of an effective 1-naphthol and formaldehyde; and
(ii) a naphthalene molecule substituted in at least one of positions 1 to 8 with a sulfur-containing radical; and
wherein the weight ratio of:
the condensation product formed by reaction of an effective 1-naphthol and formaldehyde or the naphthalene molecule substituted in at least one of positions 1 to 8 with a sulfur containing radical,
to the poly acrylate (co) polymer binder, is in the range of from 3:1 to 30:1.
2. A method of preventing fouling of a reactor for polymerization of polymerizable monomers, comprising coating internal surfaces of said reactor with the composition as claimed in claim 1 .
3. A method of preventing or reducing corrosion of a reactor for polymerization of polymerizable monomers, comprising coating internal surfaces of said reactor with the composition as claimed in claim 1 .
4. The composition as claimed in claim 1 wherein the binder is a polyacrylic ester (co)polymer selected from the group consisting of: Behenyl behenate-butyl acrylate-styrene copolymer; Butyl acrylate-styrene copolymer; and Acrylic acid-butyl acrylate-acrylonitrile copolymer.
5. A method of polymerisation of polymerisable monomers, comprising coating internal surfaces of a polymerization reactor with the composition as claimed in claim 1 , and carrying out polymerisation of said polymerizable monomers in the polymerisation reactor having said composition coated on said internal surfaces thereof.
6. A method of producing an antifouling composition as claimed in claim 1 comprising the steps of:
a) providing a solution or dispersion in water of at least one of:
(i) a condensation product formed by reaction of 1-naphthol and formaldehyde, and
(ii) a naphthalene molecule substituted in at least one of positions 1 to 8 with a sulfur-containing radical; and
b) adding a binder; while
c) optionally maintaining the pH of the mixture above pH 9; and
wherein the weight ratio of:
the condensation product formed by reaction of an effective 1-naphthol and formaldehyde or the naphthalene molecule substituted in at least one of positions 1 to 8 with a sulfur containing radical,
to the poly acrylate (co) polymer binder, is in the range of from 3:1 to 30:1.
7. The composition according to claim 1 , wherein the composition is substantially free of polyvinyl acetate and substantially free of partially hydrolysed polyvinyl acetate.
8. The composition according to claim 1 , wherein the composition comprises polyvinyl acetate or partially hydrolysed polyvinyl acetate and the amount of the polyvinyl acetate or the partially hydrolysed polyvinyl acetate in the composition is less than 2 wt %.
9. The composition according to claim 8 , wherein the amount of the polyvinyl acetate or the partially hydrolysed polyvinyl acetate in the composition is less than 1 wt %.