摘要:
The invention relates to coating mixtures, containing in the anhydrous state at least one polysiloxane, at least one reactive inorganic filler, at least one inorganic material which is film-forming as melt and at least one reactive (oligo)silane, a process for manufacture and their use.
摘要:
Novel liquid organopolysiloxane resins of the average composition �R.sup.1 Si(CH.sub.3).sub.2 O.sub.1/2 !.sub.a �(CH.sub.3).sub.3 SiO.sub.1/2 !.sub.b �R.sup.2 O.sub.1/2 !.sub.c �R.sup.1 Si(CH.sub.3)O!.sub.d �(CH.sub.3).sub.2 SiO!.sub.e �SiO.sub.2 !,whereinR.sup.1 is a C.sub.2 -C.sub.8 -alkenyl group,R.sup.2 is an optionally substituted, linear or branched C.sub.1 -C.sub.8 -alkyl group or a mixture thereof,a+b+c+d+e is about 1 to 6,d+e is about 0 to 3,the resin has a viscosity of 0.1 to 1000 Pas at 25.degree. C., andthe alkenyl or vinyl content of the resin is in the range of 0.4 to 4 mmol/g,and their preparation by reacting at least one of tetraalkoxysilane and its partial hydrolyzate with at least one organosiloxane and a strong acid as catalyst in the presence of water and optionally an organic solvent at a temperature of about >40.degree. C. They are formulated into novel low viscosity polydiorganosiloxane compositions.
摘要翻译:具有平均组成[R1Si(CH3)2O + E,fra1 / 2 + EE] a [(CH3)3SiO + E,fra1 / 2 + EE] b [R2O + E,fra 1/2]的新型液体有机聚硅氧烷树脂 + EE] c [R 1 Si(CH 3)O] d [(CH 3)2 SiO] e [SiO 2],其中R 1是C 2 -C 8 - 烯基,R 2是任选取代的直链或支链C 1 -C 8烷基或 其混合物,+ b + c + d + e为约1〜6,d + e约为0〜3,树脂在25℃下的粘度为0.1〜1000Pa·s,烯基或乙烯基含量 的树脂在0.4〜4mmol / g的范围内,并且通过使四烷氧基硅烷及其部分水解产物中的至少一种与至少一种有机硅氧烷和强酸作为催化剂在水和任选的有机溶剂的存在下反应而制备 在约> 40℃的温度下,将它们配制成新的低粘度聚二有机硅氧烷组合物。
摘要:
In the chain extension of a low molecular weight .alpha.,.omega.-dihydroxypoly(diorganosiloxane) wherein the siloxane is contacted with a chain extension catalyst, the improvement wherein said catalyst comprises at least one phosphoric acid ester, orthophosphoric acid, or a salt thereof. The reaction proceeds rapidly and, when complete, the catalyst can easily be deactivated to prevent degradation and/or rearrangement.
摘要:
The invention relates to the use of light-activated hardenable silicon compositions for the production of thick-walled moulded articles or thick-walled coatings, such as moulds for casting compositions, moulding compositions, sealants, prosthetic moulded articles or casts, formed-in-place gaskets, thick-walled coatings such as conformal coatings and method for production thereof.
摘要:
Polyammonium-Polysiloxane compounds in which siloxane and alkylene oxide substructures are joined with each other through ammonium structures, useful as wash resistant softners.
摘要:
The present invention relates to polysiloxane compositions which cross-link by condensation and contain at least one cross-linkable polysiloxane, at least one basic filler, at least one phosphorus compound, at least one alkoxysilane cross-linking agent, at least one organometallic compound and optionally other auxiliary substances, a process for their production and their use, as well as surface-modified fillers and their use.
摘要:
Self-adhesive, addition cross-linking silicone-rubber blends which have good adhesion to substrates but which release from molds used to prepare molded parts from them.
摘要:
Storage-stable crosslinkable RTV-1 compositions comprising at least one tin catalyst obtained by the reaction of at least one organotin compound with at least one monoorthophosphoric acid or mixture of mono and di-orthophosphoric acids, and at least one crosslinkable polysiloxane.