摘要:
A heat-resistant composition contains solvent-soluble polyimide resin (A) and a phosphazene compound (B) in relation to a polyimide resin composition having solubility in a low-boiling solvent, heat resistance, flame resistance, adhesiveness and mechanical properties. The said phosphazene compound (B) is a cyclic phenoxyphosphazene compound (B1) expressed in the following chemical formula (1): where m represents an integer of 3 to 25 and Ph represents a phenyl group.
摘要:
The present invention relates to polyphosphate ester morpholides, compositions comprising mixtures thereof and thermoplastic resin compositions containing the polyphosphate ester morpholide composition as a flame retardant. The flame retardant compositions comprise mixtures of polyphosphate ester morpholides which are represented by the following general formula I: in which X is 1 or 2; R1 is a C6-C20 aryl group, an alkyl substituted C6-C20 aryl group or a derivative thereof; R2 is a C6-C30 arylene group, an alkyl substituted C6-C30 arylene group or a derivative thereof; n is the average number of morpholide repeating units, m is the average number of R1 repeating units, and n+m is 1 to 5. In accordance with the present invention, it is possible to provide a flame retardant thermoplastic resin compositions having improved flame retardancy even when small amounts of the flame retardant are used. The thermoplastic compositions according to the present invention also have a desirable balance of properties such as workability, impact strength, heat resistance, appearance and the like.
摘要:
An aqueous sizing composition for glass fibers used to reinforce polyolefin polymers contains coupling agent, chemically modified polyolefin film forming material, and stabilizer. The stabilizer is one or more of the following: i) phosphinates selected from the group consisting of alkali metal phosphinates, alkaline earth metal phosphinates, ammonium phosphinate, organic phosphinates and mixtures thereof; ii) phosphonites selected from the group consisting of alkali metal phosphonites, alkaline earth metal phosphonites, ammonium phosphonite, organic phosphonites and mixtures thereof; iii) phosphites selected from the group consisting of alkali metal phosphites, alkaline earth metal phosphites, ammonium phosphite, organic phosphites and mixtures thereof; iv) hypophosphites selected from the group consisting of alkali metal hypophosphites, alkaline earth metal hypophosphites, ammonium hypophosphite and mixtures thereof; v) sulfites selected from the group consisting of alkali metal sulfites, alkaline earth metal sulfites, ammonium sulfite and mixtures thereof. vi) bisulfites selected from the group consisting of alkali metal bisulfites, alkaline earth metal bisulfites, ammonium bisulfite and mixtures thereof; and vii) mixture of one or more of the stabilizers of i through vi with an antioxidant selected from the group consisting of hindered phenols, diarylamines, thioethers and mixtures thereof, Optionally the size contains as a lubricant one or more partial esters of a branched carboxylic acid copolymer present. Sized glass fibers prepared with the aforesaid sizing composition result in improved color and mechanical properties in polyolefin composites reinforced with the sized fibers.
摘要:
A durable water repellent agent comprising a repellent and a fluorine-containing resin, wherein the repellent comprises at least one member selected from the group consisting of a perfluoroalkyl group-containing substance (I), a fluorine-containing surfactant (II), a fluorine-containing oil (III), a fluorosilicone oil (IV) and a silicone oil (V), the solid content weight ratio between said repellent and said fluorine-containing resin being (repellent):(fluorine-containing resin)=50:50 to 99:1.
摘要:
The invention includes a process for inhibiting deterioration in an olefin polymer by adding a phenolic free radical inhibitor during or before polymerization with a metallocene type transition metal catalyst without inactivating the free radical inhibitor because does not inhibit the transition metal catalyst activity. Preferably the free radical inhibitor is first to remove compounds which inhibit catalyst activity. The invention also includes a composition comprising at least one olefin monomer, a polymer of the monomer, a metallocene type transition metal catalyst and at least one free radical inhibitor having sufficient substituents to hinder the active inhibiting group such that it does not undesirably inhibit the transition metal catalyst.
摘要:
The invention relates to transparent, impact-resistant thermoplastic molding materials containing A) a matrix consisting of at least two different mixture components, B) an impact-resistance modifier, C) an additive, essentially consisting of c1) at least one 2,6-disubstituted phenol, and c21) at least one organic phosphite of general formula (I) P(OR1)n(OAr)3−n, c22 at least one organic phosphite of general formula (IIa) and/or (IIb), or c23) a mixture of compounds in accordance with c21) and c22).
摘要:
The present invention relates to an aqueous dispersion containing a pigment and/or a filler and, as dispersing agent, A) 50 to 90 wt. % of a non-ionic alkylene oxide adduct having a number average molecular weight of 2000 to 100,000, B) 0 to 40 wt. % of a salt of a polycarboxyl compound, C) 5 to 40 wt. % of a salt of an acidic (poly)phosphate ester and D) 0 to 60 wt. % of a water-soluble or water-dispersible polyurethane oligomer, wherein the sum of the components A)+B)+C)+D) equals 100 wt. %, based on the weight of A), B), C) and D), and the amount of at least one of components B) or D) is not 0.
摘要:
A vinylidene fluoride resin composition which is stable to heat at molding temperatures and is free from foaming and coloration, and molded products made by forming the vinylidene fluoride resin composition are provided. The vinylidene fluoride resin composition of the present invention comprises 100 parts by weight of a vinylidene fluoride resin, 2-20 parts by weight of a polyester plasticizer, 0.01-0.5 parts by weight of a phosphite compound. The vinylidene fluoride resin composition may further comprises a phenol compound.
摘要:
Thermoplastic molding materials contain A) from 5 to 97.9% by weight of a polyphenylene ether B) from 1 to 93.9% by weight of a vinylaromatic polymer C) from 1 to 50% by weight of an elastomeric polymer D) from 0.1 to 10% by weight of a stabilizer mixture comprising d1) at least one sterically hindered phenol, d2) at least one phosphonite and d3) at least one alkyl aryl phosphite, E) from 0 to 70% by weight of a polyamide and F)from 0 to 60% by weight of further additives and processing assistants, the sum of the percentages by weight of components A) to F) being 100%.