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US 7,247,691 B2Granted
Perfluoroalkyl substituted acrylate monomers and polymers thereof
AssigneeHuntsman International LLC
InventorShobha Kantamneni
Life of this patent
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Abstract
Fluoroalkyl amidoalkyl alcohols of the formula are disclosed and their corresponding (meth)acrylate esters. These fluoroalkyl amidoalkyl (meth)acrylate monomers can be copolymerized with a wide variety of conventional ethylenically unsaturated monomers. The resulting copolymers are useful as water, oil- and grease-proofing agents for paper, textiles and hard surfaces such as masonry and wood.
Claims6
A copolymer comprising monomers copolymerized in the following percentages by weight, relative to the total weight of the copolymer:
- a) 45–90% by weight of a monomer of formula II
- wherein
- RF is a straight or branched-chain perfluoroalkyl group containing 4 to 20 carbon atoms,
- R1 is H or CH3,
- R2 is H or an alkyl group with 1 to 4 carbon atoms, and
- m and n are, independently of each other, an integer from 2 to 11;
- and
- b) 5–30% by weight of a monomer of formula III
- (R2)2N—(CH2)k—X1—C(═O)—C(R1)═CH2 (III)
- in which the nitrogen atom is partially or completely quaternized or in the form of a salt and X1 is O or N(R2) and wherein
- R1 and R2 are defined as above, each R2 is the same or different, and
- k is 2 to 4;
- and
- c) 0–10% by weight of at least one copolymerizable nonfluorinated vinyl monomer.
11 more elements
Dependencies are inferred from the claim text.