摘要:
A heat-curable fluoropolyether rubber composition comprising (A) 100 pbw of a straight-chain perfluoropolyether compound having at least two alkenyl groups in a molecule, (B) 1-100 pbw of a reinforcing filler, and (C) 0.1-5 pbw of an organic peroxide is freed from cure inhibition by catalyst poisons, and its cured rubber has improved properties including heat resistance, chemical resistance, solvent resistance, parting property, water repellency, oil repellency and low-temperature properties.
摘要:
A fluoropolyether adhesive composition comprising (A) a linear polyfluoro compound having at least two alkenyl groups and a perfluoropolyether structure in its main chain, (B) a fluorinated organohydrogensiloxane containing at least two SiH groups, but not alkoxy and epoxy groups, (C) a platinum group metal-based catalyst, (D) an organosilicon compound having at least one silicon-bonded alkoxy group, and (E) a hydrolytic catalyst can be cured to metal and plastic substrates through addition reaction.
摘要:
A heat-curable fluoropolyether adhesive composition comprising (A) a linear polyfluoro compound having at least two alkenyl groups and a perfluoropolyether structure, (B) a fluorinated organohydrogensiloxane having at least two SiH groups, (C) a platinum group metal catalyst, (D) an organosiloxane having at least one SiH group and at least one epoxy and/or trialkoxysilyl group, and (E) a compound having at least two allyloxycarbonyl groups can be cured to metal and plastic substrates by heating at a temperature from 20° C. to less than 100° C.
摘要:
A heat-curable fluoropolyether adhesive composition comprising (A) a linear polyfluoro compound having at least two alkenyl groups and a perfluoropolyether structure, (B) a fluorinated organohydrogensiloxane having at least two SiH groups, (C) a platinum group metal catalyst, (D) an organosiloxane having at least one SiH group and at least one epoxy and/or trialkoxysilyl group, and (E) a compound having at least two allyloxycarbonyl groups can be cured to metal and plastic substrates by heating at a temperature from 20° C. to less than 100° C.
摘要:
In an adhesive composition comprising (A) a linear perfluoropolyether compound containing at least two alkenyl groups, (B) a fluorinated organohydrogensiloxane containing at least two silicon-bonded hydrogen atoms, (C) a platinum catalyst, and (D) an organosiloxane containing at least one silicon-bonded hydrogen atom and at least one epoxy and/or trialkoxysilyl group, the weight loss of components (A), (B) and (D) are controlled. The composition yields minimized outgassing during heat curing, adheres firmly to various types of substrates including metals and plastics, and cure into products having many advantages.
摘要:
There are provided an optical semiconductor sealing curable composition that provides a cured material having excellent transparency, and an optical semiconductor apparatus having an optical semiconductor device sealed using the cured material obtained by curing the optical semiconductor sealing curable composition. There is provided an optical semiconductor sealing curable composition containing: (A) a linear polyfluoro compound; (B) cyclic organosiloxane having an SiH group and a fluorine-containing organic group; (C) a platinum group metal catalyst; (D) cyclic organosiloxane having an SiH group, fluorine-containing organic group, and an epoxy group; and (E) cyclic organosiloxane having an SiH group, a fluorine-containing organic group, and a cyclic carboxylic acid anhydride residue.
摘要:
A thermosetting fluoropolyether adhesive composition is provided. This composition cures at lower than 100° C., and the cured product exhibits good adhesion to various substrates and excellent adhesion durability at a temperature of up to 150° C. A method for adhering the composition to the substrate is also provided. The composition comprises (A) a straight chain polyfluoro compound, (B) a fluorine-containing organohydrogenpolysiloxane containing at least 2 SiH groups and not containing other functional group, (C) a platinum group metal catalyst, (D) a fluorine-containing organohydrogenpolysiloxane containing a fluorine-containing organic group, SiH group, epoxy group and/or tri(organoxy)silyl group, and an aryl group, (E) a polyhydric allyl ester compound, (F) an organosilicon compound having epoxy group and an organoxy group, and not containing SiH group, and (G) an organosilicon compound having SiH group and an aryl group, and not containing epoxy group or a tri(organoxy)silyl group, or a fluorine-containing organic group.
摘要:
A composition comprising 100 parts by mass of (A) a linear fluoropolyether having at least two alkenyl groups, (B) a fluorine-containing organohydrogensiloxane having at least two SiH bonds in such an amount that an amount of the SiH bonds ranges from 0.5 to 3.0 moles per mole of the alkenyl group of the Component (A), (C) a platinum group metal compound in an amount of from 0.1 to 500 ppm calculated as the platinum group metal atom, and 1 to 50 parts by mass of (D) fumed silica having 350×1018/g or more of silanol groups on its surface. A cured product of the composition shows little migration.