Amine organoborane complex initiated polymerizable compositions containing siloxane polymerizable components
In one embodiment the invention is a polymerizable composition comprising a) an organoborane amine complex; b) one or more of monomers, oligomers or polymers having olefinic unsaturation which is capable of polymerization by free radical polymerization; c) one or more compounds, oligomers or prepolymers having a siloxane backbone and reactive moieties capable of polymerization; and d) a catalyst for the polymerization of the one or more compounds, oligomers or prepolymers having a siloxane backbone and reactive moieties capable of polymerization. This composition may further comprise a compound which causes the organoborane amine complex to disassociate. In a preferred embodiment, the two part composition further comprises a compound which is reactive with both the b) one or more of monomers, oligomers or polymers having olefinic unsaturation which is capable of polymerization by free radical polymerization; and the c) one or more compounds, oligomers or prepolymers having a siloxane backbone and reactive moieties capable of polymerization. This composition can be polymerized by contacting the two parts of the composition. In another embodiment the invention is an organoborane amine complex comprising an alkyl borane having ligands which are alkyl, cycloalkyl or both and an amino siloxane.
1. A complex comprising a borane, having three ligands selected separately in each occurrence from alkyl and cycloalkyl, and an amino siloxane.
2. A complex according to claim 1 wherein the complex corresponds to one of the formulas
(R 2 ) 3 —B←NH 2 (CH 2 ) b —(C(R 12 ) 2 ) a —Si—((R 11 ) q (Q) p ) —or
wherein
B represents boron;
R 2 is separately in each occurrence C 1-10 alkyl, C 3-10 cycloalkyl, or two or more of R 2 may combine to form a cycloaliphatic ring;
Q is a hydrolyzable moiety;
R 11 is independently in each occurrence hydrogen, alkyl, alkoxy, alkenyl, alkyl amino or corresponds to the formula ((CR 14 H) r O) n —(NR 4 )—(CH 2 ) o —NH 2 with the proviso that at least (R 11 )′ is a primary amine leave this as is;
R 12 is independently in each occurrence hydrogen, alkyl, aryl, alkoxy, and may further contain one or more primary, secondary or tertiary amines;
R 14 is separately in each occurrence hydrogen or alkyl;
R 4 is hydrogen, C 1-10 alkyl, C 6-10 aryl or C 7-10 alkaryl;
a is a number of form 1 to 10;
b is a number of from 0 to 1;
m is separately in each occurrence a whole number of 1 or greater;
p is separately in each occurrence a number of from 1 to 3;
q is separately in each occurrence an integer from 1 to 2 wherein the sum of p and q on each silicon atom is 3;
n is separately in each occurrence an integer of about 4 to about 400;
o is separately in each occurrence an integer of about 1 to about 9; and
r is separately in each occurrence an integer of 2 or 4.
3. Complexes according to claim 2 wherein
R 2 is separately in each occurrence C 1-4 alkyl,
Q is a hydrogen atom, halogen atom, alkoxy group, acyloxy group, heteroaromatic group, amino group, amido group, amino-oxy group, mercapto group or alkenyloxy group;
R 11 is independently in each occurrence C 1-20 alkyl, C 2-20 vinyl terminated alkenyl or corresponds to the formula
((CR 14 H) r O) n —(NR 4 )—(CH 2 ) o —NH 2 .
R 12 is independently in each occurrence hydrogen, C 1-20 alkyl, C 6-20 aryl, or C 1-20 alkoxy;
R 14 is separately in each occurrence hydrogen or C 1-6 alkyl;
R 4 is hydrogen or a C 1-10 alkyl;
a is a number of from 2 to 6;
b is 1;
m is separately in each occurrence a whole number of 1 or greater;
p is separately in each occurrence a number of from 2 or 3;
q is separately in each occurrence an integer from 0 or 1;
n is separately in each occurrence an integer of about 10 to about 100.
4. Complexes according to claim 3 wherein
R 2 is C 2-4 alkyl;
Q is independently in each occurrence an alkoxy group;
R 11 is independently in each occurrence C 1-4 alkyl, C 2-8 alkenyl, or corresponds to the formula
((CR 14 H) r O) n —(NR 4 )—(CH 2 ) o —NH 2 .
R 12 is independently in each occurrence C 1-4 alkyl, C 6-12 or C 1-4 alkoxy;
R 14 is independently in each occurrence hydrogen, methyl or ethyl; and
m is selected such that the molecular weight of the amine compound is between about 250 and 100,000 daltons.
5. An amine organoborane complex corresponding to the formula
wherein
B is boron;
R 2 is separately in each occurrence C 1-10 alkyl,
C 3-10 cycloalkyl, or two or more of R 2 may combine to form a cycloaliphatic ring;
R 15 is separately in each occurrence hydrogen, C 1-20 alkyl or C 1-20 aminoalkyl;
R 16 is separately in each occurrence hydrogen, alkyl, alkenyl, acyl, alkaryl or aralkyl having up to 20 carbon atoms;
R 17 is independently in each occurrence hydrogen, fluorine, C 1-20 hydrocarbyl or C 1-20 fluorocarbyl; and
j and k are whole numbers selected such that the molecular weight of the amine compound is between 250 and 10,000.
6. Complexes according to claim 5 wherein
R 2 is separately in each occurrence C 1-4 alkyl;
R 15 is separately in each occurrence hydrogen or amino alkyl;
R 16 is separately in each occurrence hydrogen, alkyl, alkenyl acyl, alkaryl, aralkyl having up to 8 carbon atoms;
R 17 is separately in each occurrence hydrogen, fluorine, C 1-8 alkyl or C 1-8 fluoroalkyl;
j is separately in each occurrence a number of 20 or greater; and
k is independently in each occurrence number of about 1 to about 8.