Compositions and process for the oilproofing and waterproofing treatment of construction materials
First Claim
1. A composition for the treatment of construction materials which comprises, by weight:
- (A) from 0.1 to 25% of at least one fluorinated copolymer formed from;
(1) 5 to 70% of one or more fluorinated esters of the formula;
##STR13## in which Rf represents perfluoro alkyl with straight or branched chain containing 2 to 20 carbon atoms, Q represents oxygen or sulfur, W represents a bivalent bond connected to Q by carbon and capable of containing one or more atoms of a member selected from oxygen, sulfur, nitrogen and mixtures thereof, one of the symbols R represents hydrogen and the other symbol R represents hydrogen or alkyl containing 1 to 4 carbon atoms;
(2) 4 to 50% of one or more monomers of the formula;
##STR14## in which R'"'"' represents hydrogen or alkyl containing 1 to 4 carbon atoms and R" represents alkylene containing 2 to 4 carbon atoms, and(3) 0 to 91% of one or more unsaturated monomers other than and copolymerizable with the monomers of formulas (I) and (II);
(B) from 2 to 25% of at least one polyisocyanate or isocyanate prepolymer which may be aliphatic or aromatic;
(C) from 0.1 to 10% of at least one catalyst; and
(D) one or more diluting solvents to make up to 100%, the content of non-volatiles in the composition not exceeding 30%.
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Accused Products
Abstract
The invention concerns the oilproofing and waterproofing treatment of construction materials by applying to them a composition which comprises by weight:
(A) from 0.1 to 25% of a fluorinated copolymer formed from
(1) 5 to 70% of a fluorinated ester of the formula: ##STR1## in which Rf represents a perfluoro-alkyl radical, Q represents an oxygen or sulfur atom, W represent a bivalent linkage, one of the symbols R represents a hydrogen atom and the other a hydrogen atom or an alkyl radical,
(2) 4 to 50% of a monomer of the formula: ##STR2## in which R'"'"' represent a hydrogen atom or an alkyl radical and R'"'"' represents an alkylene radical and
(3) 0 to 91% of any other monomers'"'"'
(B) from 2 to 25% of a polyisocyanate or isocyanate prepolymer;
(C) from 0.1 to 10% of a catalyst; and
(D) one or more diluting solvents to make up to 100%. This composition, which confers waters repellency, oil repellency, anti-graffiti and anti-billposting properties, stable towards ageing and weathering on the materials treated, may also be used as a mold-removing agent for pieces of concrete cast in a concrete mold.
23 Citations
11 Claims
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1. A composition for the treatment of construction materials which comprises, by weight:
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(A) from 0.1 to 25% of at least one fluorinated copolymer formed from; (1) 5 to 70% of one or more fluorinated esters of the formula;
##STR13## in which Rf represents perfluoro alkyl with straight or branched chain containing 2 to 20 carbon atoms, Q represents oxygen or sulfur, W represents a bivalent bond connected to Q by carbon and capable of containing one or more atoms of a member selected from oxygen, sulfur, nitrogen and mixtures thereof, one of the symbols R represents hydrogen and the other symbol R represents hydrogen or alkyl containing 1 to 4 carbon atoms;(2) 4 to 50% of one or more monomers of the formula;
##STR14## in which R'"'"' represents hydrogen or alkyl containing 1 to 4 carbon atoms and R" represents alkylene containing 2 to 4 carbon atoms, and(3) 0 to 91% of one or more unsaturated monomers other than and copolymerizable with the monomers of formulas (I) and (II); (B) from 2 to 25% of at least one polyisocyanate or isocyanate prepolymer which may be aliphatic or aromatic; (C) from 0.1 to 10% of at least one catalyst; and (D) one or more diluting solvents to make up to 100%, the content of non-volatiles in the composition not exceeding 30%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification