Additive, composition comprising it and use thereof

Patent metadata

Field	Value
Publication number	US-9434844-B2
Application number	US-201214351236-A
Country	US
Kind code	B2
Filing date	Oct 12, 2012
Priority date	Oct 12, 2011
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

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.

First claim

The invention claimed is:

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 %.

Assignees

• Ineos Europe Ag

Inventors

• Walls Christopher
• Bunney Andrew John
• Newton Maurice Sydney

Classifications

• C08F2/004

  by a prior coating on the reactor walls · CPC title

• C08F2/005

  by addition of a scale inhibitor to the polymerisation medium · CPC title

• C09D5/16 Primary

  Antifouling paints; Underwater paints · CPC title

• C09D5/1668 Primary

  Vinyl-type polymers · CPC title

• B05D3/108 Primary

  Curing · CPC title