EP0523955A2
Expired / Lapsed
EP
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Water dispersible or water soluble copolymer containing UV-absorbing monomer
Assignee: Unilever PLC
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Filing: 1992-07-14
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Granted: —
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Expires: 2012-07-14
Abstract
Abstract The invention relates to novel water-dispersible or water-soluble copolymers which contain at least one UV-absorbing monomer and one hydrophilic monomer component. These copolymers may be used in fabric care compositions and provide anti-fading and soil release benefits.
Inventors
- 👤 Matthew Evan Unilever Research U.S. Inc. Langer
- 👤 Ferial Unilever Research U.S. Inc. Khorshahi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 13:54
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/227; C; C08; C08G; C08G63/00; C08G63/66; C11; C11D; C11D3/00; C11D3/0005; C11D3/001; C11D3/0015; C11D3/0036; C11D3/16; C11D3/37; C11D3/3703; C11D3/3715; C11D3/3719; D06M15/263; D06M15/347; D06M15/37; D06M15/507; D06M15/53; D06M2101/00; D06M2101/02; D06M2101/04; D06M2101/06; D06M2101/16; D06M2101/30; D06M2101/32; D06M2200/00; D06M2200/25
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
19 words
A water-soluble or water-dispersible copolymer containing a UV-absorbing monomer, absorbing in the 280-400 nanometer range, and a hydrophilic group.
Claim 2
Dependent Claim
81 words
A copolymer according to claim 1 wherein the copolymer is a block copolymer having the formula: -(A) n -(B) m -(C) p - wherein A is a monomer capable of absorbing ultraviolet radiation in the 280-400 monometer range and bears the appropriate bifunctionality for incorporation into the main chain of the polymer; B is a hydrophilic monomer; C is a hydrophobic monomer; n ranges from 1 to 500; m ranges from 5 to 500; and p ranges from 0 to 500.
Claim 3
Dependent Claim
182 words
A copolymer according to claim 1, having the formula wherein: R is a difunctional aryl group or a difunctional straight or branched alkyl chain having 4 to 16 carbons; R₁ is hydrogen, an aliphatic group having 1-20 carbons, an aryl, an alkaryl, a secondary amine, an alkali metal sulfonate, an alkali metal carboxylate, an alkyl ether or a halogen atom; R₂ is a straight or branched chain alkoxy group having 1 to 16 carbons, an aryl or a substituted aryl group; R₃ is a straight or branched chain alkyl group having 1 to 16 carbons; R₄ is a UV-absorbing monomer absorbing in the UVB (280-320 nm) and/or UVA (320-400 nm) range; x is selected such that the hydrophobe comprises 0-49.9% of the polymer. y is selected such that the R₂ group comprises 0-49.9 mol% of the polymer; z is selected such that the (OR₃) group comprises 0 to 49.9 mol% of the polymer wherein n is an integer between 2 and 200; and w is selected such that R₄ comprises 0.05-99.9 mol% polymer; and w & z equals at least 0.05 mol%.
Claim 4
Dependent Claim
14 words
A copolymer according to claim 3, wherein R is a difunctional benzene or naphthalene.
Claim 5
Dependent Claim
22 words
A copolymer according to claim 3, wherein R₁ is hydrogen or a straight chain alkyl group having 1 to 12 carbon atoms.
Claim 6
Dependent Claim
15 words
A copolymer according to claim 3, wherein R₂ is an alkoxy group having 1-4 carbons.
Claim 7
Dependent Claim
13 words
A copolymer according to claim 3 where R is and R₁ is hydrogen
Claim 8
Dependent Claim
10 words
A copolymer according to claim 3 wherein R₂ is -OCH₂CH₂-
Claim 9
Dependent Claim
11 words
A copolymer according to claim 3 wherein R₃ is -CH₂CH₂ -
Claim 10
Dependent Claim
23 words
A copolymer according to claim 3 wherein R₄ is a highly conjugated and/or poly(ene)-based derivative and/or aromatic based derivative bearing a difunctional group.
Claim 11
Dependent Claim
9 words
A copolymer according to claim 3 wherein R₄ is
Claim 12
Dependent Claim
36 words
A copolymer according to claim 3 wherein R is and R₁ is H; R₂ = -OCH₂CH₂-; R₃ = -CH₂CH₂-; and R₄ is a highly conjugated and/or poly(ene)-based derivative and/or aromatic based derivative having a difunctional group.
Claim 13
Dependent Claim
22 words
A copolymer according to claim 3 wherein R is and R₁ is H; R₂ = -OCH₂CH₂-; R₃ = -CH₂CH₂-; and R₄ =
Claim 14
Dependent Claim
24 words
A copolymer according to claim 3 prepared by polymerizing a mixture of dimethyl terephthalate, ethylene glycol, polyethylene glycol of MW 200-3000 and methyl 4-aminobenzoate.
References Cited (Backward Citations)
No citation records indexed.
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