摘要:
A modified powder or particulate material having a silicone polymer film coated on substantially the entire surface thereof, this powder or particulate material being produced by bringing at least one silicone compound, in the form of a vapor, having the general formula (I):(R.sup.1 HSiO).sub.a (R.sup.2 R.sup.3 SiO).sub.b (R.sup.4 R.sup.5 R.sup.6 SiO.sub.1/2).sub.c (I)Wherein R.sup.1, R.sup.2, and R.sup.3 represent, independently, hydrogen or a hydrocarbon residue having 1 to 10 carbon atoms, which may be substituted with at least one halogen atom, provided that R.sup.1, R.sup.2, and R.sup.3 are not hydrogen at the same time, R.sup.4, R.sup.5, and R.sup.6 represent independently, hydrogen or a hydrocarbon residue having 1 to 10 carbon atoms, which may be substituted with at least one halogen atom, a is zero or an integer of 1 or more, b is zero or an integer of 1 or more, and c is zero or 2, p rovided that c is 2 when a and b are simultaneously zero and a+b is an integer of 3 or more when c is zero, into contact with a powder or particulate material having an active site on the surface thereof, whereby the silicone compound is polymerized on substantially the entire surface of the powder or particulate material.
摘要:
A modified powder or particulate material coated on substantially the entire surface thereof with a film of a silicone polymer carrying a pendant group thereon, this powder or particulate material being produced by a process comprising the steps of(a) coating the powder or particulate material with a film of a silicone polymer having at least one Si-H moiety, and(b) carrying out an addition reaction of a compound capable of reacting with an Si--H moiety to the Si--H moiety in the silicone polymer of step (a), whereby the pendant group derived from said compound is bonded to the silicone polymer.
摘要:
A modified powder or particulate material having a silicone polymer film coated on substantially the entire surface thereof, this powder or particulate material being produced by bringing at least one silicone compound, in the form of a vapor, having the general formula (I):(R.sup.1 HSiO).sub.a (R.sup.2 R.sup.3 SiO).sub.b (R.sup.4 R.sup.5 R.sup.6 SiO.sub.1/2).sub.c (I)wherein R.sup.1, R.sup.2, and R.sup.3 represent, independently, hydrogen or a hydrocarbon residue having 1 to 10 carbon atoms, which may be substituted with at least one halogen atom, provided that R.sup.1, R.sup.2, and R.sup.3 are not hydrogen at the same time, R.sup.4, R.sup.5, and R.sup.6 represent, independently, hydrogen or a hydrocarbon residue having 1 to 10 carbon atoms, which may be substituted with at least one halogen atom, a is zero or an integer of 1 or more, b is zero or an integer of 1 or more, and c is zero or 2, provided that c is 2 when a and b are simultaneously zero and a+b is an integer of 3 or more when c is zero, into contact with a powder or particulate material having an active site on the surface thereof, whereby the silicone compound is polymerized on substantially the entire surface of the powder or particulate material.
摘要:
A packing material for liquid chromatography, comprising particles having a silicone polymer film coated on substantially the entire surface thereof, the packing material being produced by a process comprising the steps of:(a) bringing at least one silicone compound having the general formula (I):(R.sup.1 HSiO).sub.a (R.sup.2 R.sup.3 SiO).sub.b (R.sup.4 R.sup.5 R.sup.6 SiO.sub.1/2).sub.c (I) wherein R.sup.1, R.sup.2, and R.sup.3 represent, independently, a hydrocarbon residue having 1 to 10 carbon atoms, which may be substituted with at least one halogen atom, R.sup.4, R.sup.5, and R.sup.6 represent, independently, hydrogen or a hydrocarbon residue having 1 to 10 carbon atoms, which may be substituted with at least one halogen atom, a is zero or an integer of 1 or more, b is zero or an integer of 1 or more, c is zero or 2, and a+b+c is 3 to 300, into contact with particles, whereby the silicone compound is polymerized on substantially the entire surface of the particles, and(b) crosslinking unreacted Si--H groups in the presence of a catalyst, or(c) carrying out an addition reaction of a vinyl compound having up to 40 carbon atoms to unreacted Si--H groups.