摘要:
The present invention provides a bisphenol monoester-based stabilizer composition that can improve resistance to discoloration at high temperature of a thermoplastic polymer compared with a conventional one using a bisphenol monoester-based stabilizer composition including a bisphenol monoester-based compound mainly, wherein a compound represented by the following formula:
is contained in an area percentage by liquid chromatography analysis of 0.1 to 3%, a thermoplastic polymer composition and a method of manufacturing the thermoplastic polymer composition, a thermoplastic polymer molded product, and a method of stabilizing a thermoplastic polymer, as well as a thermoplastic polymer composition in which resistance to discoloration at high temperature is improved by using the stabilizer composition and a method of manufacturing the thermoplastic polymer composition, a thermoplastic polymer molded product, and a method of stabilizing a thermoplastic polymer.
摘要:
The stilbene epoxy resin having two different aryl groups of the following formula: wherein R 1 through R 8 independently represent acyclic or cyclic alkyl groups having 1 through 6 carbon atoms, hydrogen atom or halogen atoms, and the epoxy resin mixture including such stilbene epoxy resin according to the present invention have lower melting points than those of the stilbene epoxy resin having two identical aryl groups and the epoxy resin mixture including such stilbene epoxy resin. Compared with the conventional resins, the resin or resin mixture of the present invention accordingly has improved working and molding properties, thereby shortening the time required for the molding and working process and giving economical advantages and preferable productivity. The epoxy resin or resin mixture according to the present invention is preferably used as adhesive, coating, or insulating material, as electrical or electronic material for laminated sheets or the like, and especially as material for encapsulating electronic parts.
摘要:
A stilbene type epoxy resin represented by the general formula (1) consisting of 100 mol% of the cis -isomer, or 10 mol% or more of the cis -isomer and the rest of the trans -isomer: wherein R 1 to R 8 are independently an acyclic or cyclic alkyl group having 1 to 6 carbon atoms, hydrogen atom or a halogen atom, and a production process thereof. The invention provides a stilbene type epoxy resin having lower melting point and lower viscosity than the trans-stilbene type epoxy resin hitherto known.
(A) an epoxy resin represented by the general formula (1) wherein R₁ represents hydrogen, an alkyl group having 1 to 6 carbon atoms, substituted- or nonsubstituted-phenyl groups or halogen, and X represents and n represents an integer of 0 to 4, and (B) a curing agent, which composition provides a cured product having low hygroscopic property and high adhesiveness.
摘要:
The present invention provides a stabilizer containing, as a main component, a bisphenol monoester and a bisphenol-based compound, wherein the area of the bisphenol-based compound is 0.15 to 70 when the area of the bisphenol monoester is set to be 100 in a chromatograph obtained by liquid chromatograph analysis of the stabilizer, a method of manufacturing the same, a thermoplastic polymer composition containing the stabilizer, as well as a stabilizer that can further improve the process stability of the thermoplastic polymer, as compared with the conventional one, by compounding the stabilizer into the thermoplastic polymer through a method of stabilizing the thermoplastic polymer using the stabilizer and a method of manufacturing the stabilizer,
摘要:
Provided is an epoxy resin composition comprising a crystalline epoxy resin and an amorphous epoxy curing agent, wherein the crystalline epoxy resin is dispersing uniformly in the amorphous epoxy curing agent as crystallites. The epoxy resin composition is excellent in preservation stability.
摘要:
Provided is an epoxy resin composition comprising a crystalline epoxy resin and an amorphous epoxy curing agent, wherein the crystalline epoxy resin is dispersing uniformly in the amorphous epoxy curing agent as crystallites. The epoxy resin composition is excellent in preservation stability.
摘要:
A bisphenol monoester compound represented by the formula (1):
wherein each R represents independently a hydrogen atom or a methyl group, and R' represents an alkyl group of a carbon number of 1 to 6, or a hydrogen atom.