COMPOSITION BASED ON A (METH)ACRYLATE MONOMER AND ZINC SALT
The present invention relates to a two-component crosslinkable composition comprising: a component A comprising: a (meth)acrylate monomer; a reducing agent; a zinc salt chosen from zinc alkanesulfonates, zinc acetate, and mixtures thereof; a component B comprising an oxidizing agent; and also to the uses thereof.
1 - 14 . (canceled)
15 . A two-component crosslinkable composition comprising:
a component A comprising:
a (meth)acrylate monomer;
a reducing agent; and
a zinc salt selected from the group consisting of zinc alkanesulfonates, zinc acetate, and mixtures thereof; and
a component B comprising an oxidizing agent.
16 . The composition as claimed in claim 15 , characterized in that the reducing agent is selected from the group consisting of tertiary amines, sodium metabisulfite, sodium bisulfite, transition metals, azo compounds, alpha-aminosulfones, and mixtures thereof.
17 . The composition as claimed in claim 15 , characterized in that the reducing agent is a tertiary amine, having the formula (I) or (II) below:
wherein:
m and n are, independently of one another, an integer ranging from 1 to 150;
r is an integer ranging from 1 to 200;
R 1 represents a radical selected from the group consisting of a saturated or unsaturated and linear or branched alkyl comprising from 1 to 20 carbon atoms; of a (hetero)aryl comprising from 6 to 12 carbon atoms; of a cycloalkyl comprising from 3 to 12 carbon atoms;
v represents an integer ranging from 0 to 5;
R 2 and R 3 represent, independently of one another, a halogen atom, a hydrogen atom or a linear or branched alkyl group comprising from 1 to 12 carbon atoms, said alkyl group being optionally interrupted by at least one oxygen atom;
R 4 represents a hydrogen atom, an arylalkyl group or a linear or branched alkyl group comprising from 1 to 20 carbon atoms;
on the condition that m+n>2.
18 . The composition as claimed in claim 15 , characterized in that component A comprises a total content of reducing agent(s) ranging from 0.1% to 5%, by weight relative to the total weight of said component A.
19 . The composition as claimed in claim 15 , characterized in that the zinc alkanesulfonates have one of the formulae (III) or (IV) below:
wherein R′ represents a linear or branched hydrocarbon radical comprising from 1 to 18 carbon atoms, and R″ represents a linear or branched hydrocarbon radical comprising from 2 to 18 carbon atoms.
20 . The composition as claimed in claim 15 , characterized in that the total content of zinc salt(s) in component A ranges from 0.1% to 10%, by weight relative to the total weight of said component A.
21 . The composition as claimed in claim 15 , characterized in that the (meth)acrylate monomer is chosen from the group consisting of:
compounds having formula (A) below:
wherein:
R A represents a hydrogen atom or an alkyl group comprising from 1 to 4 carbon atoms;
R b is selected from the group consisting of alkyls, cycloalkyls, alkenyls, cycloalkenyls, alkylaryls, arylalkyls and aryls, it being possible for said alkyls, cycloalkyls, alkenyls, cycloalkenyls, alkylaryls, arylalkyls or aryls to be optionally substituted and/or interrupted by at least one silane, one silicone, one oxygen, one halogen, one carbonyl, one hydroxyl, one ester, one urea, one urethane, one carbonate, one amine, one amide, one sulfur, one sulfonate or one sulfone;
polyethylene glycol di(meth)acrylates;
polypropylene glycol di(meth)acrylates;
tetrahydrofuran (meth)acrylates;
hydroxyalkyl (meth)acrylates;
hexanediol di(meth)acrylate;
trimethylolpropane tri(meth)acrylate;
diethylene glycol di(meth)acrylate;
triethylene glycol di(meth)acrylate;
tetraethylene glycol di(meth)acrylate;
dipropylene glycol di(meth)acrylate;
di(pentamethylene glycol) di(meth)acrylate;
diglyceryl tetra(meth)acrylate;
tetramethylene di(meth)acrylate;
ethylene di(meth)acrylate;
bisphenol A mono- and di(meth)acrylates;
bisphenol F mono- and di(meth)acrylates; and
mixtures thereof.
22 . The composition as claimed in claim 15 , characterized in that the (meth)acrylate monomer is selected from the group consisting of methyl (meth)acrylate, ethyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, heptyl (meth)acrylate, 2-tert-butylheptyl (meth)acrylate, octyl (meth)acrylate, 3-isopropylheptyl (meth)acrylate, nonyl (meth)acrylate, decyl (meth)acrylate, undecyl (meth)acrylate, 5-methylundecyl (meth)acrylate, dodecyl (meth)acrylate, 2-methyldodecyl (meth)acrylate, tridecyl (meth)acrylate, 5-methyltridecyl (meth)acrylate, tetradecyl (meth)acrylate, pentadecyl (meth)acrylate, hexadecyl (meth)acrylate, 2-methylhexadecyl (meth)acrylate, heptadecyl (meth)acrylate, 5-isopropylheptadecyl (meth)acrylate, 4-tert-butyloctadecyl (meth)acrylate, 5-ethyloctadecyl (meth)acrylate, 3-isopropyloctadecyl (meth)acrylate, octadecyl (meth)acrylate, nonadecyl (meth)acrylate, eicosyl (meth)acrylate, 3-vinylcyclohexyl (meth)acrylate, bornyl (metha)crylate, 2,4,5-tri-t-butyl-3-vinylcyclohexyl (meth)acrylate, 2,3,4,5-tetra-t-butylcyclohexyl (meth)acrylate; benzyl (meth)acrylate, phenyl (meth)acrylate, 2-(2-ethoxyethoxy)ethyl (meth)acrylate, 2-phenoxyethyl (meth)acrylate, and mixtures thereof.
23 . The composition as claimed in claim 15 , characterized in that component A comprises a total content of (meth)acrylate monomer(s) ranging from 20% to 80%, by weight relative to the total weight of said component A.
24 . The composition as claimed in claim 15 , characterized in that it comprises at least one additional ingredient selected from the group consisting of catalysts, fillers, antioxidants, light stabilizers/UV absorbers, metal deactivators, antistatic agents, antifogging agents, foaming agents, biocides, plasticizers, lubricants, emulsifiers, dyes, pigments, rheological agents, impact modifiers, adhesion promoters, optical brighteners, flame retardants, antisweating agents, nucleating agents, solvents, and mixtures thereof.
25 . The composition as claimed in claim 15 , characterized in that it comprises:
a component A comprising:
from 20% to 80% by weight of (meth)acrylate monomer(s);
from 0.1% to 5% by weight of reducing agent(s);
from 0.1% to 10% by weight of zinc salt(s) as defined in claim 15 ;
from 2% to 30% by weight of core-shell impact modifier(s); and
from 0% to 40% by weight of urethane-acrylate compound(s);
relative to the total weight of said component A;
a component B comprising:
from 1% to 50% by weight of oxidizing agent(s); and
from 20% to 80% by weight of plasticizer(s);
relative to the total weight of said component B.
26 . The composition as claimed in claim 15 , characterized in that component A/component B volume ratio ranges from 100/5 to 1/1.
27 . An adhesive, mastic or coating comprising the composition as defined in claim 15 .
28 . A process for assembling two substrates by adhesive bonding, comprising:
coating at least one of the two substrates to be assembled with a composition obtained by mixing components A and B as defined in claim 15 ; and then
effectively bringing the two substrates into contact; and
crosslinking the composition.