TWO-COMPONENT THERMALLY CONDUCTIVE COMPOSITION OF SILYLATED POLYMAR

1 - 13 . (canceled)

14 . A thermally-conductive two-component composition comprising:

a composition (A) comprising a silylated polymer, and

a composition (B) comprising at least 1% by weight of a filler (C) relative to the total weight of the composition (B), the filler (C) providing at least 0.0025% by weight of moisture relative to the total weight of composition (B),

wherein composition (A) and/or composition (B) also comprise at least one thermally-conductive filler, and

composition (A) and/or composition (B), also comprise:

a rheological agent (r1) chosen from amide waxes and/or

rheological agent (r2) comprising:

from 1% to 40% by weight of a bis-urea (a) obtained by reaction of a primary aliphatic amine with a diisocyanate with a molar mass of less than 500 g/mol, relative to the total weight of the rheological agent (r2), and

from 60% to 99% by weight of a plasticizer (b) chosen from alkyl phthalates, pentaerythritol tetravalerate, alkylsulfonic acid esters of phenol, diisononyl 1,2-cyclohexanedicarboxylate, 3,3′-[methylenebis(oxymethylene)]bis[heptane], dioctyl carbonate and mixtures thereof, relative to the total weight of the rheological agent (r2),

said rheological agent (r2) being in the form of a suspension of solid particles of the bis-urea (a) in a continuous phase of the plasticizer (b).

15 . The thermally-conductive two-component composition as claimed in claim 14 , in which the silylated polymer comprises at least one alkoxysilane group of formula (I):

in which:

—Si(R 4 ) p (OR 5 ) 3-p

(I)

 R 4 represents a linear or branched alkyl radical comprising from 1 to 4 carbon atoms and, when p is equal to 2, the radicals R 4 are identical or different,

 R 5 represents a linear or branched alkyl radical comprising from 1 to 4 carbon atoms, and, when p is equal to 0 or 1, the radicals R 5 are identical or different, two groups OR 5 possibly being engaged in the same ring, and

 p is an integer equal to 0, 1 or 2.

16 . The thermally-conductive two-component composition as claimed in claim 14 , in which the silylated polymer is of formula (II), (III) or (IV):

in which:

R 4 , R 5 and p have the same meaning as in formula (I) described above,

P represents a saturated or unsaturated polymer radical, bearing a linear or branched open chain, or comprising one or more optionally aromatic rings, optionally comprising one or more heteroatoms, such as oxygen, nitrogen, sulfur and/or silicon,

R 1 represents a saturated or unsaturated divalent hydrocarbon-based radical comprising from 5 to 15 carbon atoms, with a linear or branched open chain, or comprising one or more optionally aromatic rings,

R 3 represents a linear or branched divalent alkylene radical comprising from 1 to 6 carbon atoms,

X represents a divalent radical chosen from —NH—, —NR 7 — or —S—,

R 7 represents a linear or branched alkyl radical comprising from 1 to 20 carbon atoms and which may also comprise one or more heteroatoms,

f is an integer ranging from 1 to 6.

17 . The thermally-conductive two-component composition as claimed in claim 16 , in which the silylated polymer is of formula (II′), (II″), (III′) or (IV′):

in which:

R 1 , R 3 , R 4 , R 5 , X, R 7 and p have the same meaning as in formulae (II), (III) and (IV),

R 2 represents a saturated or unsaturated, linear or branched divalent hydrocarbon-based radical optionally comprising one or more heteroatoms, such as oxygen, nitrogen, sulfur, silicon,

n is an integer, wherein n is such that the number-average molecular mass of the silylated polymer is between 500 g/mol and 70000 g/mol.

18 . The thermally-conductive two-component composition as claimed in claim 14 , in which the rheological agent (r2) is such that the bis-urea (a) is obtained by reacting an n-alkylamine (a1) comprising from 1 to 22 carbon atoms with a diisocyanate (a2) of formula (V):

in which R 6 is chosen from one of the following divalent radicals, of which the formulae below reveal the two free valencies:

i) the divalent radical derived from isophorone:

 ii) the divalent radical 4,4′-methylenebis(cyclohexyl):

 iii) the divalent radical derived from toluene 2,4-diisocyanate (or 2,4-TDI) or from toluene 2,6-diisocyanate (or 2,6-TDI) of respective formulae:

 iv) the divalent radical derived from diphenylmethylene 4,2′-diisocyanate (or 4,2′-MDI) or from diphenylmethylene 4,4′-diisocyanate (or 4,4′-MDI), of respective formulae:

 v) the hexamethylene radical: —(CH 2 ) 6 —,

 vi) the m-xylylene radical:

 and

 vii) the hexahydro-m-xylylene radical:

19 . The thermally-conductive two-component composition as claimed in claim 14 , in which the filler (C) is chosen from clays, talc, kaolins, gypsum, carbonate fillers, zeolites, expandable graphite and mixtures thereof.

20 . The thermally-conductive two-component composition as claimed in claim 14 , in which the filler (C) is precipitated calcium carbonate coated with fatty acids and/or a type A synthetic zeolite with a pore diameter of 3 Å.

21 . The thermally-conductive two-component composition as claimed in claim 14 , in which the at least one thermally-conductive filler is chosen from aluminosilicates, alumina, aluminum hydroxide, aluminum nitride, boron nitride, magnesium oxide and mixtures thereof.

22 . The thermally-conductive two-component composition as claimed in claim 14 , in which each of the compositions (A) and (B) comprises at least one thermally-conductive filler.

23 . The thermally-conductive two-component composition as claimed in claim 14 , in which composition (A) and/or composition (B) also comprises a flame retardant.

24 . The thermally-conductive two-component composition as claimed in claim 14 , in which the volume ratio of composition (A) to composition (B) is between 0.25 and 4.

25 . A battery comprising the thermally-conductive two-component composition as claimed in claim 14 .

26 . A method of crosslinking, without addition of free water, a two-component composition, the method comprising providing a two-component composition comprising a composition (A) comprising a silylated polymer, and a composition (B) comprising a filler (C), wherein the filler (C) has a moisture content of between 0.05% and 5% by weight, relative to the total weight of the filler (C).