摘要:
The present invention is an self-adhesive millable silicone rubber composition containing: 100 parts by mass of (A) an organopolysiloxane having at least two alkenyl groups bonded to silicon atoms per molecule and an average polymerization degree of 100 or more; 5 to 50 parts by mass of (B) a reinforcing silica having a specific surface area of 50 m 2 /g or more; 0.1 to 5 parts by mass of (C) an organosilicon compound having an epoxy group and an alkoxy group per molecule; 0.1 to 5 parts by mass of (D) an organosilicon compound having an isocyanate group and an alkoxy group per molecule; and an effective curing amount of (E) a curing agent. The content of an organosilicon compound having a siloxane bond and a benzene ring per molecule is 0 to 0.1 parts by mass, and the content of an organosilicon compound having a siloxane bond and an epoxy group per molecule is 0 to 0.1 parts by mass. This makes it possible to provide a self-adhesive millable silicone rubber composition excellent in productivity and capable of forming a cured product excellent in adhesion.
摘要:
Disclosed are a resin composition for laser engraving, a relief printing plate precursor for laser engraving and process for producing the same, a process for making relief printing plate, and a relief printing. The resin composition for laser engraving comprising: (Component A) a compound represented by following Formula (1), and (Component B) a binder polymer having a functional group that is capable of reacting with a hydrolyzable silyl group and/or a silanol group and thereby forming a crosslinked structure:
wherein in Formula (1), W, X and Y each independently represent a hydrolyzable group selected from the group consisting of an alkoxy group, an aryloxy group, a mercapto group, a halogen atom, an amide group, an acetoxy group, an amino group and an isopropenoxy group, or a hydroxy group; L represents a divalent linking group or a single bond; Z 1 represents a divalent group having 4 to 45 carbon atoms in total and containing at least two of a unit selected from an ethylene oxide unit and a propylene oxide unit; Z 2 represents an alkyl group having 7 or less carbon atoms, or a benzyl group; and the sum of the numbers of carbon atoms of L, Z 1 and Z 2 is 10 to 50.
摘要:
The present invention provides an epoxy resin composition having a high heat resistance such as a thermal decomposition temperature, as well as a high adhesive strength, in particular inner layer adhesive strength, and also provides a prepreg, a laminate board and a multi-layer board using the composition. The epoxy resin composition according to the present invention contains an epoxy resin containing nitrogen and bromine in the molecule, a curing agent having a phenolic hydroxyl group, and a silane compound having no cure acceleration action and having reactivity with the epoxy resin. The bromine content in a resin component of the epoxy resin composition is 10 mass% or greater.
摘要:
The invention provides a composition which is solid at room temperatures and excellent in storage stability and functions as an effective additive for epoxy resins, and a process for the preparation of the composition. The composition comprises a salt of a basic silane coupling agent with an organic carboxylic acid and is prepared by reacting a basic silane coupling agent with an organic carboxylic acid to form a salt of the agent with the acid, and then mixing under heating the resulting product with a compound which has a high affinity for the agent or the acid and a softening or melting point of 40 DEG C or above.
摘要:
An embodiment of the present invention relates to a curable composition containing (A) a polyoxyalkylene-based polymer having a silicon-containing reactive group, (B) a (meth)acrylic ester-based polymer having a trialkoxysilyl group, and (C) a specific silane compound having a guanidine group. Because a nonorganotin-based catalyst is used for the curable composition of an embodiment of the present invention, the curable composition has excellent miscibility among the components, tends less to suffer a defect caused by transfer of a catalyst, is excellent in curability and adhesiveness, and, when cured, yields a cured product having excellent mechanical performance.