摘要:
The invention relates to novel polymeric organosilicon compounds comprising hydrocarbon radicals with at least one aliphatic carbon-carbon double bond in a terminal position. To produce these compounds, (A) compounds containing at least one aliphatic carbon-carbon double bond per molecule, in a terminal position, are reacted with (B) oligomeric or polymeric organosilicon compounds containing units of the general formula R1R2SiO1/2 and units of the general formula HRSiO and/or HSiO3/2 and possibly units of the general formula R2SiO, where R is a monovalent, possibly substituted, hydrocarbon radical with between 1 and 18 carbon atoms per radical, which is free of aliphatic carbon-carbon double bonds, and R1 is a monovalent hydrocarbon radical with between 1 and 18 carbon atoms per radical which has at least one aliphatic carbon-carbon double bond in a terminal position, subject to the condition that the sum of the units HRSiO and R1R2SiO1/2 on average is greater than 2.0 if (B) contains no HSiO3/2 units, and the number of R1 radicals per molecule is greater than the number of Si-bonded hydrogen atoms, in the presence of (C) catalysts promoting the addition of Si-bonded hydrogen to aliphatic double-bonds. The ratio of aliphatic double bonds in components (A) and (B) to Si-bonded hydrogen in component (B) is between 1.5 and 10, subject to the condition that the polymeric organosilicon compounds on average contain more than two hydrocarbon radicals with at least one aliphatic carbon-carbon double bond in a terminal position.
摘要:
The present invention provides crosslinkable compositions comprising (A) an organosilicon compound having radicals containing aliphatic carbon-carbon multiple bonds, (B) an organosilicon compound having Si-bonded hydrogen atoms, (C) a catalyst which promotes the addition of Si-bonded hydrogen onto aliphatic multiple bond, and optionally (D) an agent which retards the addition of Si-bonded hydrogen onto aliphatic multiple bond at room temperature and to the use of the crosslinkable compositions for producing coatings which repel tacky substances. The present invention also relates to organosilicon compounds having Si-bonded hydrogen atoms, and to a process for their preparation.
摘要:
The invention relates to novel organosilicon compounds comprising ammonium groups, said compounds being soluble in isopropanol or diethylene glycol monobutyl ether, and containing: a) at least one structural unit of general formula (I) wherein R2 represents a bivalent organic radical containing a hydroxyl group which is conditioned by a ring opening of an epoxy group; R3 represents a hydrogen atom or a monovalent hydrocarbon radical comprising 1 to 60 carbon atoms per radical, and can be split or substituted by at least one separate heteroatom chosen from the group consisting of nitrogen, oxygen, sulphur or halogen atoms; R4 represents a bivalent hydrocarbon radical comprising 1 to 10 carbon atoms per radical; n represents 0 or a whole number from 1 to 10; m represents a whole number from 1 to the total number of nitrogen atoms in (I); x represents 0 or 1; and X− represents an anion, b) at least one siloxane unit of general formula (II), and c) at least two siloxane units of general formula (III) wherein R, R1, a and b have the designation cited in patent claim (1), provided that the siloxane units of formula (III) are connected to the structural unit of formula (I) via the Si atoms via the R2 radicals.
摘要翻译:本发明涉及包含铵基的新型有机硅化合物,所述化合物可溶于异丙醇或二甘醇单丁醚,并含有:a)至少一种通式(I)的结构单元,其中R 2表示含二价有机基团 由环氧基的开环调节的羟基; R 3表示氢原子或每个基团含有1至60个碳原子的单价烃基,并且可以被至少一个选自氮,氧,硫或卤素原子的独立杂原子分裂或取代; R 4表示每个基团含有1-10个碳原子的二价烃基; n表示0或1至10的整数; m表示(I)中从1到氮原子总数的整数; x表示0或1; 并且X 1表示阴离子,b)至少一个通式(II)的硅氧烷单元,和c)至少两个通式(III)的硅氧烷单元,其中R,R 1,a和b具有 式(1)中引用的名称,条件是式(III)的硅氧烷单元经由R 2基团经由Si原子连接到式(I)的结构单元。
摘要:
The invention relates to new, cross-linkable compounds containing (A1) linear organopolysiloxanes with aliphatically unsaturated hydrocarbon radicals, said organopolysiloxanes being of general formula (I) R1aR3-aSiO(R2SiO)c[R2Si—Y—SiR2O(R2SiO)c]dSiR3-bR1b, wherein R can be the same or different, and represents a monovalent, optionally halogenated hydrocarbon radical which is free of terminal aliphatic carbon—carbon multiple bonds, R1 represents a monovalent aliphatically unsaturated hydrocarbon radical, Y represents a bivalent organic radical which is free of terminal aliphatic carbon—carbon multiple bonds, a is 0 or 1, b is 0 or 1, and the sum of a+b per molecule is 1 or 2, c is a whole number to the value of 1 to 1000, d is 0 or a whole number to the value of 1 to 10, and optionally, (A2) MQ silicone resins which are soluble in (A1), on the condition that if MQ silicone resins (A2) are not used, the sum of a+b in the formula (I) is 1.3 to 1.9 on average and that if MQ silicone resins (A2) are used, the sum of a+b in formula (I) is 1.0 to 1.9 on average; (B) organo-silicon compounds with Si-bonded hydrogen atoms; (C) catalysts which promote the formation of an aliphatic multiple bond by Si-bonded hydrogen; and optionally, (D) agents which slow down the formation of an aliphatic multiple bond by Si-bonded hydrogen at room temperature.
摘要:
Poly-o-hydroxyamides include binaphthyl substituents as repeating units. The poly-o-hydroxyamides can be cyclized to give the polybenzoxazole by heating. Pore formation occurs, so that a dielectric having a very low dielectric constant k of less than 2.5 is obtained.
摘要:
Poly-o-hydroxyamides include binaphthyl substituents as repeating units. The poly-o-hydroxyamides can be cyclized to give the polybenzoxazole by heating. Pore formation occurs, so that a dielectric having a very low dielectric constant k of less than 2.5 is obtained.