398 results about "Disiloxane" patented technology

A method for fabricating a SiCOH dielectric material comprising Si, C, O and H atoms from a single organosilicon precursor with a built-in organic porogen is provided. The single organosilicon precursor with a built-in organic porogen is selected from silane (SiH₄) derivatives having the molecular formula SiRR¹R²R³, disiloxane derivatives having the molecular formula R⁴R⁵R⁶—Si—O—Si—R⁷R⁸R⁹, and trisiloxane derivatives having the molecular formula R¹⁰R¹¹R¹²—Si—O—Si—R¹³R¹⁴—O—Si—R¹⁵R¹⁶R¹⁷ where R and R^1-17 may or may not be identical and are selected from H, alkyl, alkoxy, epoxy, phenyl, vinyl, allyl, alkenyl or alkynyl groups that may be linear, branched, cyclic, polycyclic and may be functionalized with oxygen, nitrogen or fluorine containing substituents. In addition to the method, the present application also provides SiCOH dielectrics made from the inventive method as well as electronic structures that contain the same.

Compositions comprising an asymmetric disiloxane surfactant composition comprising a silicone composition comprising a silicone having the formula:

MM′

where M or M′ comprises an alkylpolyalkyleneoxide bearing substituent selected from the group consisting of:

• • R¹³(C₂H₄O)_a(C₃H₆O)_b(C₄H₈O)_cR¹⁴ and
  • R¹²SiR⁵R⁶(R¹³(C₂H₄O)_a(C₃H₆O)_b(C₄H₈O)_cR¹⁴) that exhibit resistance to hydrolysis over a wide pH range.

The invention relates to a quaternized modified amino silicone oil softener and preparation and application thereof. The softener comprises the following general formula in the specification. The preparation comprises the following steps of: (1) adding octamethylcy-clotetrasiloxane into a container, adding a coupling agent N-beta-(aminoethyl)-gamma-aminopropyl methyl dimethoxysilane into the container dropwise, adding a tetramethyl ammonium hydroxide catalyst and subsequently a capping agent hexamethyl disiloxane into the container, and then performing reduced pressure distillation to obtain amino silicon oil; (2) dissolving the amino silicon oil into a solvent, adding the mixture into epichlorohydrin, stirring and heating to react under the protection of nitrogen, and removing the solvent by steaming to obtain an intermediate product; and (3) uniformly mixing N,N-dimethyl-decanamide and the solvent to obtain a mixture, stirring with heating, adding the intermediate product dropwise into the mixture under the protection of nitrogen, performing a thermostatic reaction, and removing the solvent by steaming to obtain the product. The softener of the invention has high hydrophilicity and high stability; fabric processed by the softener has excellent soft handfeel, high hydrophilicity, low yellowing, antibacterial property and the like; and the softener is simple to prepare and is suitable for industrial production.

A nonaqueous electrolyte solution for secondary batteries, which maintains small internal resistance and high electrical capacitance in long-term use in a nonaqueous electrolyte secondary battery uses, as an active material, a crystalline carbon material having a high crystallinity, and a negative electrode produced using a polymeric carboxylic compound as a binding agent. The nonaqueous electrolyte solution contains: (A) at least one compound selected from a group consisting of an unsaturated phosphate ester compound represented by a general formula (1) and an unsaturated phosphate ester compound represented by a general formula (2); (B) at least one compound selected from a group consisting of a sulfite ester compound, a sulfonate ester compound, an alkali metal imide salt compound, a fluorosilane compound, an organic disilane compound or an organic disiloxane compound; (C) an organic solvent, and (D) an electrolyte salt. A secondary battery using such nonaqueous electrolyte solution is also described.

The invention discloses a quaternary ammonium salt modified organosilicon polyurethane ocean antifouling paint, the structure is shown as the formula (1); in the formula, an organosilicon soft segment containing quaternary ammonium salt side chain is an isocyanate hard segment; the quaternary ammonium salt modified organosilicon polyurethane ocean antifouling paint is prepared by the following steps: preparing 2,4,6-tri(3- chlorine propyl group)-2,4,6- trimethyl-ring trisiloxane; preparing 1,3-bi(3-(1-methoxy group-2-hydroxy propyl group) propyl group)-tetramethyl disiloxane; preparing 1,3-bi(3-(1-methoxy group-2-hydroxy propyl group) propyl group)-tetramethyl disiloxane; preparing dihydroxy ended chloropropylated polysiloxane; preparing polysiloxane compound containing the quaternary ammonium salt and hydroxyl; mixing the compound with the isocyanate, and adding gamma-aminopropyl triethoxy silane for chain extension to obtain a prepolymer, and the prepolymer being crosslinked and condensed in air. In the invention, the double effect of low surface energy and poison killing are achieved, so as to suppress the adsorption of marine organisms and kill bacteria adsorbed on the surface of a ship body through the quaternary ammonium salt.

A preparation method for highly tactic ladder-like polysilsequioxane with solubility, high molecular weight and different organic side groups is introduced in this invention. Trichlorosilicane with different substituents reacts with template-1, 4-dianiline or its derivatives with ladder-brace template method to produce conjugate precursor containing four silicon-chlorine bonds, which self-assembles into ladder polymers by hydrogen bond template function of p-dianiline and transforms into silanol end-capping organic bridging siloxane polymers after hemihydration-hydrolysis-condensation. Such a compound is then end-capped with trimethylsiloxyl and hydrolyzed to remove p-dianiline, and ladder-like polysilsequioxane can be obtained after further condensation. Or tetrafunctional disiloxane monomers with template-function side groups self-assemble into ladder-like polymers, which are then condensation-polymerized and end-capped with trimethylsiloxyl to obtain ladder-like polysilsequioxane.

The invention discloses a synthesis method for terpolymer block silicone oil. The synthesis method is characterized by comprising the steps of: (A) adding 100 parts by weight of dimethyl cyclosiloxane or octamethyl cyclotetrasiloxane, 4 parts by weight of epoxy-terminated disiloxane and 15 parts by weight of dimethylacetamide, raising the temperature to 70-80 DEG C, adding 0.02-0.1 part by weight of base catalyst, raising the temperature to 110-120 DEG C, reacting for 3-4 hours, slowly opening vacuum, extracting solvents and low molecular weight matters, continuously raising the temperature to 140-145 DEG C, maintaining the temperature and the vacuum for 2 hours, so as to obtain epoxy silicone oil; and (B) adding 80-100 parts by weight of epoxy-terminated silicone oil, 6-30 parts by weight of polyether polyol and 150 parts by weight of isopropyl alcohol, carrying out backflow reaction for 6-15 hours at 80-86 DEG C, and decompressing and removing the isopropyl alcohol or adding a propylene glycol displacement solvent, so as to obtain amino polyether block silicone oil. By utilizing the terpolymer block silicone oil disclosed by the invention, the fabric has good hand feel, namely fluffy feel and smooth feel, cannot be yellowed or is slightly yellowed.

Disiloxane compounds of the formula

MM′

Where M comprises either branched allyl hydrocarbon substituents or silanyl substituents and M comprises an alkylpolyalkyleneoxide substituent The disiloxane compounds of the invention exhibit an enhanced resistance to hydrolysis outside a pH range ranging from 6 to 7.5, and are useful as surfactants.

The invention discloses polyether block polysiloxane diol and a method for preparing the same. The method is characterized by comprising the following steps: performing ring-opening polymerization through cyclic siloxane and dihydro terminated disiloxane first to obtain dihydro terminated polysiloxane, and then performing hydrosilylation reaction with mono-vinyl terminated polyether oligomer to form the polyether block polysiloxane diol the structural formula of which is shown in the graph, wherein R1 and R2 are CH3 and CH2CH3 and/or CH2CH2CH3 respectively, R3 is H or CH3, n is an integer between 1 and 1, 000, and p and q are integers between 1 and 100. The polyether block polysiloxane diol prepared by the method has the advantages of better hydrolysis resistance and storage stability, and high reactivity; in addition, the polyether block polysiloxane diol improves the problem of the unsatisfactory mechanical property of the prior siloxane diol in modifying copolymers.

The invention discloses a method for preparing organosilicon quaternary ammonium salt modified polyurethane resin for a marine antifouling coating. The method comprises the steps of: firstly, preparing double hydroxyl end-organosilicon quaternary ammonium salt from 1,3-bi[3-(1-methoxyl-2-hydroxy propoxy) propyl]-tetramethyl disiloxane, gamma-chlorinated propyl methyl dimethoxy silicone, dimethyl dimethoxy silicone, deionized water and dodecyl dimethyl tertiary amine; then mixing the prepared double hydroxyl end-organosilicon quaternary ammonium salt, the polyether polyol and the diisocyanate in a solvent; adding a curing agent to prepare the organosilicon quaternary ammonium salt modified polyurethane resin for the marine antifouling coating. The organosilicon quaternary ammonium salt modified polyurethane resin prepared by the method is combined with dual effects of low surface energy and killing, and used as the marine antifouling coating film forming matter. Thus, absorption of marine organism can be restrained; the bacteria absorbed at the surface of a ship body can be killed through the quaternary ammonium salt.

Compositions comprising disiloxane surfactant compositions comprising a silicone composition comprising a silicone having the formula:

MM′

where

M=R¹R²R³SiO_1/2;

M′=R⁴R⁵R⁶SiO_1/2;

with R¹ selected from the group consisting of branched monovalent hydrocarbon radical of from 3 to 6 carbon atoms and R⁷, where R⁷ has the formula:

R⁸R⁹R¹⁰SiR^l2

with R⁸, R⁹, and R¹⁰ each independently selected from the group of monovalent hydrocarbon radicals having from 1 to 6 carbon atoms and monovalent aryl or alkaryl hydrocarbon radicals having from 6 to 13 carbon atoms and R¹² is a divalent hydrocarbon radical having from 1 to 3 carbon atoms,

R² and R³ are each independently selected from the group of from 1 to 6 carbon atom monovalent hydrocarbon radicals or R¹, with R⁴ an alkylpolyalkyleneoxide of the general formula:

R¹³(C₂H₄O)_a(C₃H₆O)_b(C₄H₈O)_cR^l4

where R¹³ is a divalent linear or branched hydrocarbon radical having the structure:

—CH₂—CH(R¹⁵)(R¹⁶)_dO—

where R¹⁵ is H or methyl; R¹⁶ is a divalent alkyl radical of 1 to 6 carbons where the subscript d may be 0 or 1;

R¹⁴ is selected from the group consisting of H, monovalent hydrocarbon radicals of from 1 to 6 carbon atoms and acetyl where the subscripts a; b and c are zero or positive and satisfy the following relationships:

2≦a+b+c≦20 with a≧2,

and R⁵ and R⁶ are each independently selected from the group of monovalent hydrocarbon radicals having from 1 to 6 carbon atoms or R⁴ that exhibit resistance to hydrolysis over a wide pH range.

A process for preparing trisiloxane containing glucosylamido used as the assistant of agricultural chemical to decrease the surface tension of water includes catalytic reaction between hexamethyl disiloxane and aminosilane to obtain aminotrisiloxane, and reacting on lacton gluconate in methanol.

The invention discloses a preparation method of an organosilicon foam stabilizer applied to a single-component polyurethane foam sealing agent. The preparation method comprises the steps of (1) adding allyl alcohol, ethylene oxide and propylene oxide to a reaction kettle, and reacting under the action of a base catalyst at the temperature of 90-130 DEG C and pressure not more than 0.5MPa for 4-6h to obtain allyl-terminated copolymer ether; (2) reacting the polyether prepared in the step 1 with sodium at 85-120 DEG C, introducing excess haloalkane, and reacting for 4-6h to obtain methyl-terminated copolymer ether; (3) reacting octamethyl cyclotetrasiloxane, hexamethyl disiloxane and high-hydrogen-content silicone oil with hydrogen content of 1-2% in the presence of an acid ion exchanger to obtain low-hydrogen-content silicone oil with hydrogen content of 0.05-1.0%; (4) mixing the products obtained in the steps 1,2, and 3, adding a catalyst, and reacting under the condition of pressure being 0.5-2atm for 3-8h to obtain the organosilicon foam stabilizer. During foaming, the foam stabilizer has excellent dimensional stability and high foaming ratio and fluidity.

The invention relates to a method for preparing an organosilicon surfactant with a T-shaped structure for a pesticide. The method comprises the following steps: (1) preparation of hydrogen containing trisiloxane, in which, full containing hydrogen silicone oil, hexamethyl disiloxane and catalyst are added into a reactor, the temperature of the mixture is controlled to be between 10 and 100 DEG C with stirring, after reacting for 0.5 to 12 hours, the mixture is cooled, and then distilled and purified to prepare the hydrogen containing trisiloxane; and (2) synthesis of the organosilicon surfactant, in which, the hydrogen containing trisiloxane and allyl polyether are added into the reactor, are heated to a temperature of between 60 and 120 DEG C under stirring in nitrogen, catalyst platinum-allyl polyether is added into the reactor to react for 2 to 12 hours, and the mixture is devolatilized in vacuum for 30 minutes and is cooled to a room temperature to prepare the organosilicon surfactant. The method has a simple process, easy industrial production and high product purity without cross linked polymer impurities.

While a fine porous diamond particle film has been known as a high heat resistant and low dielectric constant film and also has high mechanical strength and heat conductivity, and is expected as an insulating film for multi-layered wirings in semiconductor integrated circuit devices, it is insufficient in current-voltage characteristic and has not yet been put into practical use. According to the invention, by treating the fine porous diamond particle film with an aqueous solution of a salt of a metal such as barium and calcium, the carbonate or sulfate of which is insoluble or less soluble, and a hydrophobic agent such as hexamethyl disilazane or triethyl monochlolo silane, as well as a reinforcing agent containing one of dichlorotetramethyl disiloxane or dimethoxytetramethyl disiloxane, thereby capable of putting the dielectric breakdown voltage and the leak current within a specified range of a practical standard.