Silicone resin compositions which can be cured at room temperature

1. A composition, comprising:

(a) a binder comprising at least one alkoxy-functional polysiloxane; and

(b) at least one crosslinking catalyst which is a silicon-containing guanidine moiety of formula (IVa), (IVb) or (IVc):

wherein:

R 3 are divalent radicals which, independently of one another, are identical or different linear or branched hydrocarbon radicals containing 1 to 50 carbon atoms, and which may be interrupted by at least one heteroatom, and/or may be substituted by at least one hydroxyl radical, at least one amino radical, or a mixture thereof;

R 11 , R 12 , R 21 , R 22 and R 31 independently of one another, are identical or different and are hydrogen, linear or branched or cyclic hydrocarbons containing 1 to 15 carbon atoms, it being possible for the hydrocarbons also to contain 1 or 2 heteroatoms;

a silicon compound is bonded to R 3 via a Si atom,

wherein component b) further comprises at least one crosslinking catalyst of the formula (I):

M a M G b D c D G d T e Q f   (I),

wherein:

a=0 to 10,

b=0 to 10,

c=0 to 350,

d=0 to 50,

e=0 to 50,

f=0 to 10,

where the sum of the indices b and d is greater than or equal to 1 to 20,

with the proviso that when the index a is 2 and at the same time the sum of the indices b, c, e and f is zero, the index d is other than 1,

M=[R 3 SiO 1/2 ]

M G =[R G R 2 SiO 1/2 ],

D=[R 2 SiO 2/2 ],

D G =[R G 2 SiO 2/2 ],

T=[RSiO 3/2 ],

Q=[SiO 4/2 ],

R are, independently of one another, identical or different and are OR a groups and/or linear or branched, saturated or else mono- or polyunsaturated hydrocarbon radicals, which may be interrupted by heteroatoms and/or may be substituted one or more times by hydroxyl, amino, carboxyl or aryl radicals,

R a is identical or different and is hydrogen and/or alkyl groups having 1 to 12 carbon atoms,

R G is a radical containing guanidine groups and of the formula (IVa), (IVb) or (IVc), the tautomers and/or salts thereof,

R 3 are divalent radicals which, independently of one another, are identical or different, linear or branched hydrocarbon radicals containing 1 to 50 carbon atoms, and may be interrupted by heteroatoms, and

R 11 , R 12 , R 21 , R 22 and R 31 are, independently of one another, identical or different and are hydrogen, linear or branched or cyclic hydrocarbons containing 1 to 15 carbon atoms, it being possible for the hydrocarbons also to contain 1 or 2 heteroatoms,

wherein the alkoxy-functional polysiloxane of component (a) satisfies the general formula (II):

R a Si(OR′) b O (4-a-b)/2   (II),

wherein:

a and b independently of one another are greater than 0 to less than 2,

R are, independently of one another, identical or different, linear or branched, saturated or else mono- or polyunsaturated or aromatic hydrocarbon radicals, and

R′ is an alkyl group consisting of 1 to 8 carbon atoms.

2. The composition of claim 1 , further comprising:

(c) an alkoxysilane as a crosslinker component.

3. The composition according to claim 2 , wherein the alkoxysilane (c) is a silane of the formula (III):

R a Si(OR′) b   (III),

wherein:

a and b independently of one another are greater than 0 to less than 2, and the sum of a+b is 4,

R is an alkyl group or cycloalkyl group consisting of 1 to 8 carbon atoms, or an aromatic moiety having 6 to 20 carbon atoms, and

R′ is an alkyl group consisting of 1 to 8 carbon atoms.

4. The composition of claim 1 , further comprising at least one additive.

5. A coating material, comprising the composition of claim 1 .

6. A method, comprising curing the composition of claim 1 at room temperature and without addition of a metal-containing catalyst.

7. The method of claim 6 , wherein the curing occurs in the presence of moisture.