Abstract:
Fully acylated hydroxyl-terminated organopolysiloxanes bearing pendant aminoalkyl groups are easily prepared by reacting a hydroxyl-terminated, aminoalkyl organopolysiloxane with a carboxylic anhydride in stoichiometric amount relative to amino groups, in the presence of at least one emulsifier.
Abstract:
Alkyl(methoxymethyl)trimethylsilanylmethylamines are prepared by reacting alkyltrimethylsilanylmethylamines with a substantially equimolar amount of paraformaldehyde and methanol in the presence of a base.
Abstract:
Aqueous emulsions of organopolysiloxanes functionalized with a limited amount of aminoalkyl-functional end groups and silicone resins are storage stable, yet capable of adequate crosslinking upon application to substances to be hydrophobicized.
Abstract:
Addition-crosslinkable silicone compositions having high adhesion, rapid curing, and reduced odor and extractables contain a silylated citric acid.
Abstract:
The invention relates to a method for producing silicon compounds (A) having hydrocarbon oxy-groups that have at least one unit of the general formula (1) HmSi (OR)n (OR′) oR″pX4-m-n-o-p (1) by conversion of silicon compounds (B) having at least one unit of the general formula (2) Hm+nSi(OR′)oR″pX4-m-n-o-p (2), having an alcohol of the general formula (3) ROH (3) in the presence of a catalyst (K) that is on a carrier material bonded metal selected from Ni, Pd, Pt, wherein per mol formed group OR, at maximum 1 liter of solvent is used and wherein R, R′, R″, X, m, n, o and p have the meanings listed in claim 1.
Abstract:
Storage stable polyorganosiloxane-silicone resin mixtures contain: 1) 100 parts by weight of one or more liquid aminoalkyl-containing polyorganosiloxanes containing at least 80 mol % of units selected from units of the formulae Ia, Ib, II and III R12SiO(4-a-b)/2 (Ia), R1aR2bSiO(4-a-b)/2 (Ib), R33SiO(1/2) (II), R32R4SiO(1/2) (III), wherein, in the polydimethylsiloxanes, the average ratio of the sum of units of the formulae Ia and Ib to the sum of units of the formulae II and III is in the range from 0.5 to 500, the average ratio of units II to III in the range of 1.86 to 100, and the polydimethylsiloxanes have an average amine number of ≧0.01 mequiv/g, 2) at least 1 part by weight of one or more silicone resins, and 3) at most 5 parts by weight of water.
Abstract:
The present invention encompasses a surface treatment composition which comprises a polyorganosiloxane fluid-silicone resin mixture and a carrier. The polyorganosiloxane fluid-silicone resin mixture comprises about 2% to about 95%, by weight of the mixture, of one or more polyorganosiloxane fluid compounds; from about 1% to about 10%, by weight of the mixture, of one or more silicone resin, a protonation agent, at least about 5%, by weight of the mixture; of water; and optionally, less than about 5%, by weight of the mixture, of an emulsifier.
Abstract:
The present invention encompasses a surface treatment composition which comprises a polyorganosiloxane fluid-silicone resin mixture and a carrier. The polyorganosiloxane fluid-silicone resin mixture comprises about 50% to about 99.99% by weight of one or more polyorganosiloxane fluid compounds, at least 0.01% by weight of one or more silicone resin, and a maximum of 5% by weight of water.
Abstract:
Storage stable polyorganosiloxane-silicone resin mixtures contain: 1) 100 parts by weight of one or more liquid aminoalkyl-containing polyorganosiloxanes containing at least 80 mol % of units selected from units of the formulae Ia, Ib, II and III R12S1O(4-a-b)/2 (Ia), R1aR2bSiO(4-a-b)/2 (Ib), R33SiO(1/2) (II), R32R4SiO(1/2) (III), wherein, in the polydimethylsiloxanes, the average ratio of the sum of units of the formulae Ia and Ib to the sum of units of the formulae II and III is in the range from 0.5 to 500, the average ratio of units II to III in the range of 1.86 to 100, and the polydimethylsiloxanes have an average amine number of ≧0.01 mequiv/g, 2) at least 1 part by weight of one or more silicone resins, and 3) at most 5 parts by weight of water.
Abstract:
The present invention encompasses a surface treatment composition which comprises a polyorganosiloxane fluid-silicone resin mixture and a carrier. The polyorganosiloxane fluid-silicone resin mixture comprises about 50% to about 99.99% by weight of one or more polyorganosiloxane fluid compounds, at least 0.01% by weight of one or more silicone resin, and a maximum of 5% by weight of water.