A process and composition for the hydrosilylation of an unsaturated compound comprising reacting (a) a silyl hydride with (b) an unsaturated compound in the presence of (c) a platinum compound and (d) a cyclodiene, with the proviso that when the unsaturated compound is a terminal alkyne, the silyl hydride is other than a halosilane. The process and composition optionally comprise an inhibitor (e). The process and composition may be employed to form a variety of hydrosilylation products.

A method for producing a hydroxyl-functionalized polysiloxane having secondary or tertiary hydroxyl groups, said method comprising the steps of: i) reacting a hydroxyalkyl allyl ether having a secondary or tertiary alcohol group with a siloxane under anhydrous conditions and under transition metal catalysis, said hydroxylalkyl allyl ether conforming to Formula (I)

##STR00001## wherein n is 0, 1, 2, 3, 4 or 5, preferably 0; m is 1, 2, 3, 4 or 5, preferably 1; spacer group A is constituted by a covalent bond or a C.sub.1-C.sub.20 alkylene group; R.sup.1 is hydrogen, a C.sub.1-C.sub.8 alkyl group, a C.sub.3-C.sub.10 cycloalkyl group, a C.sub.6-C.sub.18 aryl group or an aralkyl group; R.sup.a, R.sup.b, R.sup.c, R.sup.d, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 may be the same or different and each is independently selected from hydrogen, a C.sub.1-C.sub.8 alkyl group, a C.sub.6-C.sub.18 aryl group or a C.sub.6-C.sub.18 aralkyl group, with the proviso that at least one of R.sup.3 and R.sup.4 is not hydrogen; and said siloxane conforming to Formula (II)

##STR00002## wherein m is 1, 2, 3, 4 or 5, preferably 1; R.sup.6, R.sup.7, R.sup.8 and R.sup.9 may be the same or different and each represent a C.sub.1-C.sub.8 alkyl group, a C.sub.3-C.sub.10 cycloalkyl group, a C.sub.6-C.sub.18 aryl group or a C.sub.6-C.sub.18 aralkyl group; and ii) in the presence of the reaction product of step i), performing a ring opening polymerization of at least one cyclic siloxane monomer.

The invention relates to polyether-modified siloxanes which are both superspreading and readily biodegradable. In particular, the invention is directed to a composition including polyether-modified siloxanes of formula (I)
M.sub.aD.sub.bD.sub.cFormula (I) with M=R.sup.1.sub.3SiO.sub.1/2, D=R.sup.1.sub.2SiO.sub.2/2, D=R.sup.1R.sup.2SiO.sub.2/2, where a is 2, b is between 0 and 0.1, c is between 1.0 and 1.15, 0 and 1.05, R.sup.1 are independently hydrocarbyl having 1 to 8 carbon atoms, preferably methyl, ethyl, propyl or phenyl radicals, especially preferably methyl radicals, R.sup.2 are independently a polyether radical of the formula (II)
R.sup.3O[CH.sub.2CH.sub.2O].sub.m[CH.sub.2CH(CH.sub.3)O].sub.nR.sup.5Formula (II) where m=3.4 to 11.0, n=2.5 to 8.0, wherein m/n=1.9 to 2.8, and R.sup.3 are independently divalent hydrocarbyl radicals having 2 to 8 carbon atoms, and R.sup.5 is hydrogen, wherein the polyether-modified siloxanes of formula (I) having a biodegradability of greater than 60%.

A trisiloxane having at least one carbinol functional group comprises the reaction product of (A) an initial trisiloxane and (B) an organic compound. Component (A) has a pendant silicon-bonded functional group selected from a hydrogen atom, an epoxy-containing group, an ethylenically unsaturated group, and an amine group. Typically, component (A) is free of certain terminal silicon-bonded functional groups and is free of polyoxyalkylene groups. Component (B) has a functional group reactive with the pendant silicon-bonded functional group of component (A), and has at least one hydroxyl functional group. The trisiloxane is useful for a number of applications including use as a detergent additive. The trisiloxane may be of the following general formula (I): (R13SiO1/2) (R1R3Si2/2)(R13SiO1/2) (I). In formula (I), each R1 is an independently selected hydrocarbyl group. R3 may be selected from the groups (i) to (iv) described herein. Typically, the trisiloxane has 1-6 carbinol groups.

The present invention provides a silicon-containing compound shown by the following formula (1):

##STR00001##

wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, and R.sup.6 each independently represent a linear, branched, or cyclic alkyl group having 1 to 6 carbon atoms, a phenyl group, a 3,3,3-trifluoropropyl group, or a group shown by (OSiR.sup.7R.sup.8).sub.nOSiR.sup.9R.sup.10R.sup.11; R.sup.7, R.sup.8, R.sup.9, R.sup.10, and R.sup.11 have the same meanings as R.sup.1 to R.sup.6; X represents a linear or branched alkylene group having 3 to 7 carbon atoms optionally having an ether group; and n is an integer in the range of 0 to 100. This provides a stretchable film that hats excellent stretchability and strength, with the film surface having excellent repellency, and a method for forming the same; as well as a urethane resin used for the stretchable film; and a silicon-containing compound to be a material of the urethane resin.

In one embodiment, a silicone-based ink for additive manufacturing includes a vinyl-terminated siloxane macromer, a hydrophobic reinforcing filler, and a rheology modifying additive. In another embodiment, a method of additive manufacturing with silicone-based ink includes adding a mixture that includes a vinyl-terminated siloxane macromer, a hydrophobic reinforcing filler, and a rheology modifying additive to a cartridge for additive manufacturing, extruding the mixture through the cartridge to form a structure, and curing the mixture to at least a predefined extent.

A hydrosilylation iron catalyst prepared from a two-electron ligand (L) and a mononuclear, binuclear, or trinuclear complex of iron indicated by formula (1), Fe having bonds with carbon atoms included in X and the total number of Fe-carbon bonds being 2-10. As a result of using iron, the hydrosilylation iron catalyst is advantageous from a cost perspective as well as being easily synthesized. Hydrosilylation reactions can be promoted under mild conditions by using this catalyst.
Fe(X).sub.a(1)
(in the formula, each X independently indicates a C2-30 ligand that may include an unsaturated group excluding carbonyl groups (CO groups) and cyclopentadienyl groups, however at least one X includes an unsaturated group, a indicates an integer of 2-4 per Fe atom.)

Described herein is a method of preparing an aminoalkyl-substituted disiloxane. The method includes forming a mixture including a di- or polyamine containing at least one primary amine group and a silane; reacting the mixture in a first reaction; adding a hydrolysis agent to the mixture; and reacting the mixture in a second reaction to form the aminoalkyl-substituted disiloxane. Also described herein is an aminoalkyl-substituted disiloxane prepared according to the method.

The invention relates to a hydrosilylatable mixture M containing: (A) a compound with at least one hydrogen atom directly bonded to Si, (B) a compound containing at least one carbon-carbon multiple bond, and (C) a compound containing at least one cationic Si(II) group. The invention also relates to a method for hydrosilylating the mixture M.

In one aspect, cobalt complexes are described herein. In some embodiments, such cobalt complexes are operable as catalysts for hydroboration and borylation applications.