EP0248612A2
Expired / Lapsed
EP
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Thickeners for emulsion paints
Assignee: Akzo Nobel Decorative Coatings Ltd
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Filing: 1987-06-01
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Granted: —
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Expires: 2007-06-01
Abstract
Abstract The thickener comprises: (a) 25 - 45% of methacrylic acid, acrylic acid or a mixture thereof; (b) 25 - 65% of alkyl acrylate such as methyl acrylate, ethyl acrylate, butyl acrylate, alkyl methacrylate such as methyl methacrylate, ethyl methacrylate, butyl methacrylate, lauryl methacrylate or a mixture thereof; (c) 1 - 40% of an ester of composition; in which R is a C₁₂ - C₂₅ alkyl group, n = at least 10; m = at least 5 A = H, -(CH₂CH₂O) n - R, C₁ - C₂₀ alkyl, -(CH₂CH₂O)m-H or -(CH₂CH₂O) m -CH₃ (d) 0 - 1% of a polyethylenically unsaturated monomer effective for chain branching or crosslinking such as diallyl maleate, diallyl phthalate, divinyl benzene, allyl methacrylate, ethylene glycol dimethacrylate, or trimethylol propane triacrylate.
Inventors
- 👤 Christopher James Tonge
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 20:12
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C09; C09D; C09D7/00; C09D7/40; C09D7/43; C08L; C08L33/00; C08L33/02; C08L33/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
144 words
A thickener comprising a polymer prepared from the following components: (a) 25 - 45% of methacrylic acid, acrylic acid or a mixture thereof; (b) 25 - 65% of alkyl acrylate such as methyl acrylate, ethyl acrylate, butyl acrylate, alkyl methacrylate such as methyl methacrylate, ethyl methacrylate, butyl methacrylate, lauryl methacrylate or a mixture thereof; (c) 1 - 40% of an ester of composition; in which R is a C₁₂ - C₂₅ alkyl group, n = at least 10; m = at least 5 A = H, -(CH₂CH₂O) n - R, C₁ - C₂₀ alkyl, -(CH₂CH₂O)m-H or -(CH₂CH₂O) m -CH₃ (d) 0 - 1% of a polyethylenically unsaturated monomer effective for chain branching or crosslinking such as diallyl maleate, diallyl phthalate, divinyl benzene, allyl methacrylate, ethylene glycol dimethacrylate, or trimethylol propane triacrylate. The total of components (a), (b), (c) and (d) being in substance 100%.
Claim 2
Dependent Claim
144 words
A thickener comprising a polymer prepared from the following components: (a) 25 - 45% of methacrylic acid, acrylic acid or a mixture thereof; (b) 25 - 65% of alkyl acrylate such as methyl acrylate, ethyl acrylate, butyl acrylate, alkyl methacrylate such as methyl methacrylate, ethyl methacrylate, butyl methacrylate, lauryl methacrylate or a mixture thereof; (c) 1 - 40% of an ester of composition; in which R is a C₁₂ - C₂₅ alkyl group, n = at least 10; m = at least 5 A = H, -(CH₂CH₂O) n - R, C₁ - C₂₀ alkyl, -(CH₂CH₂O)m-H or -(CH₂CH₂O) m -CH₃ (d) 0 - 1% of a polyethylenically unsaturated monomer effective for chain branching or crosslinking such as diallyl maleate, diallyl phthalate, divinyl benzene, allyl methacrylate, ethylene glycol dimethacrylate, or trimethylol propane triacrylate. The total of components (a), (b), (c) and (d) being in substance 100%.
Claim 3
Dependent Claim
31 words
According to Claim 1 but containing not more than 10% of an ethylenically unsaturated hydrophylic monomer (e). The total of components (a), (b), (c), (d) and (e) being in substance 100%.
Claim 4
Dependent Claim
40 words
A polymer composition according to Claim 1 in which (a) is 30 - 40%, (b) is 40 - 60%, (c) is 3 - 12%, (d) is 0.05 - 0.5% and the total of (a), (b), (c) and (d) is 100%.
Claim 5
Dependent Claim
46 words
A polymer composition according to Claim 2 in which (a) is 30 - 40%, (b) is 30 - 60%, (c) is 3 - 12%, (d) is 0.05 - 0.5%, (e) is 0.5 to 10% and the total of (a), (b), (c), (d) and (e) is 100%.
Claim 6
Dependent Claim
33 words
A polymer composition according to any of the preceding claims in which the formula of (c) is determined by: A = H, n = 15-25 and R is a C₁₆ - C₂₀ alkyl.
Claim 7
Dependent Claim
10 words
A polymer composition according to either of the above examples.
Claim 8
Dependent Claim
10 words
A polymer composition according to either of the above examples.
Claim 9
Independent Claim
16 words
A method of thickening an emulsion paint utilising the composition of any of the preceding claims.
Claim 10
Dependent Claim
14 words
Emulsion paint including a thickener according to any one of claims 1 to 7.
References Cited (Backward Citations)
No citation records indexed.
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