摘要:
Disclosed is an anaerobic hardening composition comprising (A) 100 parts by weight of a (meth)acryloyloxy group-containing polyorganosiloxane, (B) from 0.01 to 20 parts by weight of a dialkyl peroxide and (C) from 0.1 to 20 parts by weight of an amine. The composition hardens in the absence of oxygen with excellent hardenability and adhesiveness-revealing speed to give a hardened product having a high adhesion power.
摘要:
A room temperature-curable silicone rubber composition comprising a polydiorganosiloxane having a silanol group at the both ends thereof, an organosilane or a partially hydrolyzed condensate thereof, an epoxyalkylalkoxysilane, and an organosilicon group-containing isocyanurate. The composition shows improved adhesive property to various materials and having excellent moisture resistance and hot water-resistant adhesive property, and is useful as a sealing material for various apparatuses and structures which are used in hot water or moist heat atmosphere.
摘要:
A method of orienting a liquid crystal optical device includinga smectic liquid crystal andtwo flexible substrates whichsupport the smectic liquid crystal layer between them andcarry on their surfaces facing each other their respective electrode layers,which method comprises orienting the smectic liquid crystal by subjecting the liquid crystal optical device to a bending treatment.
摘要:
A room temperature vulcanizing silicone rubber composition comprising a polyorganosiloxane terminated with silanol groups, an alkoxysilane of the formula R.sup.1 Si(OR.sup.2).sub.3 or its partially hydrolyzed condensate, colloidal calcium carbonate surface-treated with rosin acid, and a curing catalyst. This composition has excellent workability, and, after curing, becomes a high-strength, high-modulus rubber having excellent adhesion and resistance to humidity and hot water, and is useful as a sealing material for sealed insulating glass.
摘要:
A silicone rubber composition comprising(A) 100 parts by weight of a polyorganosiloxane having, per molecule, at least two structural units represented by the following formula:(R.sup.1).sub.a (R.sup.2).sub.b SiO.sub.(4-(a+b))/2 (I)(B) a polyorganohydrogensiloxane comprising structural units shown by the following formula:(R.sup.3).sub.c H.sub.d SiO(4-(c+d))/2 (II)and having at least three silicon-bonded hydrogen atoms per molecule, the amount of component (B) being such that the number of silicon-bonded hydrogen atoms in component (B) is from 0.5 to 4.0 per R.sup.1 group in the structural units shown by formula (I) of component (A),(C) from 0.1 to 10 parts by weight of a compound selected from the group consisting of an organosilicon compound having, per molecule, at least one silicon-bonded hydrogen atoms and at least one group represented by the following formula: ##STR1## and an acrylic- or methacrylic-functional silane coupling agent, (D) from 0.1 to 10 parts by weight of an epoxyalkylalkoxysilane represented by the following formula:X-Q.sup.3 -Si(R.sup.6).sub.f (OR.sup.7).sub.3-f (IV)(E) from 0 to 5 parts by weight of an aluminum chelate compound, and(F) platinum and/or a platinum compound in an amount of from 1 to 100 ppm of the polyorganosiloxane, component (A), in terms of the amount of platinum atoms.All groups and subscripts are identified in the specification.
摘要:
A curing agent composition for silicone elastomers, comprising an organic tin compound which is solubilized in water with the use of a nonionic surfactant selected from the group consisting of polyoxyethylene sorbitol fatty acid esters and polyoxyethylene sorbitan fatty acid esters and a polyvalent alcohol.
摘要:
Polyorganosiloxane compositions comprising:(A) a polyorganosiloxane having two or more of the following unit, in the molecule, represented by the formula: ##EQU1## wherein, R.sup.1 represents an alkenyl radical; R.sup.2 represents a substituted or unsubstituted monovalent hydrocarbon radical having no unsaturated aliphatic bond; a is an integer of 1 of 2; b is an integer of 0 to 2; and a+b is an integer of 1 to 3;(B) a polyorganohydrogensiloxane, having units represented by the formula: ##EQU2## wherein, R.sup.3 represents a substituted or unsubstituted monovalent hydrocarbon radical; c is an integer of 0 to 2; d is an integer of 1 or 2; and c+d is an integer of 1 to 3,and having at least three hydrogen atoms bonded to silicon atoms in a molecule, in an amount such that the number of the hydrogen atoms bonded to silicon atoms may be 0.5 to 4.0 per R.sup.1 radical contained in polyorganosiloxane (A);(C) a catalyst selected from the group consisting of platinum and platinum compounds, in an amount of 1 to 100 ppm in terms of platinum atom relative to polyorganosiloxane (A); and(D) anthraquinone dyes and/or azo dyes, wherein the amount is from 1 to 2,000 ppm relative to polyorganosiloxane (A).
摘要:
The present invention relates to a polyorganosiloxane composition and, more particularly, to a polyorganosiloxane composition having good curing properties at room temperature and producing cured materials having good water absorption properties. The polyorganosiloxane composition comprises:(A) a curable silicone rubber composition containing polysiloxane which is liquid at room temperature as a base polymer; and(B) a polymer containing acrylic acid or an alkali metal salt of acrylic acid as a monomer unit.
摘要:
A substrate coated with a film of liquid crystal material having a uniform thickness is produced efficiently by applying the liquid crystal material to the electrode side of a substrate using an impregnating matter impregnated with the liquid crystal material, and such a method ensures uniform thickness even for a film of liquid crystal material having a large area. A liquid crystal optical device having a uniform optical quality and a large area is produced efficiently by coating a flexible substrate with a film of liquid crystal material using the method described above, laminating the coated flexible substrate with another flexible substrate, with the film of the liquid crystal material disposed between the electrode sides of the flexible substrates, and orienting the liquid crystal material in thus obtained laminate by subjecting the laminate to bending treatment.
摘要:
A substrate coated with a film of liquid crystal material having a uniform thickness is produced efficiently by applying the liquid crystal material to the electrode side of a substrate using an impregnating matter impregnated with the liquid crystal material, and such a method ensures uniform thickness even for a film of liquid crystal material having a large area. A liquid crystal optical device having a uniform optical quality and a large area is produced efficiently by coating a flexible substrate with a film of liquid crystal material using the method described above, laminating the coated flexible substrate with another flexible substrate, with the film of the liquid crystal material disposed between the electrode sides of the flexible substrates, and orienting the liquid crystal material in thus obtained laminate by subjecting the laminate to bending treatment.