摘要:
An aromatic polycarbonate composition contains aromatic polycarbonate in which a ratio of the phenolic end group to the non-phenolic end group is at least 1/19, and a copolymer having epoxy or oxazolinyl group, aromatic vinyl-diene-vinyl cyanide copolymer or aromatic polyester, or glass filler. Compatability between the specific aromatic polycarbonate and the other resin, weld strength, melt stability or adhesion to glass filler are improved.
摘要:
Blends of polyphenylene sulfides, polyphenylene ethers and certain polyamides are made more compatible by incorporating in the polymeric blend either citric, malic or agaricic acid or one of their derivatives, trimellitic anhydride acid chloride, oxazolinyl or epoxy-containing ethylenically unsaturated compounds, or oxazolinyl or epoxy-containing polymers.
摘要:
A resin composition is provided which contains (A) 5-80 weight parts polyphenylene ether resins and (B) 20-90 weight parts polyamide resins, wherein the (B) polyamide resins: (a) comprise 1-50 weight percent of polyamide resins having a number-average molecular weight not greater than 11,000, and a terminal amino group content of at least 7.0.times.10.sup.-5 mole/g, and (b) have an overall number-average molecular weight of 9,500 to 32,000, and a terminal amino group content of 5.5.times.10.sup.-5 mole/g or less. The resin compositions have both good impact resistance (in particular at low temperatures) and good melt flow. The resin compositions can be used in a wide range of applications, and so are industrially useful.
摘要:
The present invention provides a method for making a polycarbonate composition. The polycarbonate is prepared by melt synthesis using a sulfur-containing acid compound to at least partially quench the melt catalyst. The polycarbonate composition comprises said polycarbonate, phosphorous acid, further sulfur-containing acid compound and an ester derived from a mono-fatty acid and a polyhydric alcohol.
摘要:
The present inventions provides polyphenylene ether (PPE)/polyamide (PA) resin compositions having excellent dimensional stability when they absorb moisture, and good mechanical and other properties. Resin compositions of (A) 10-80 wt. parts PPE resins and (B) 90-20 wt. parts PA resins, in which the PA resins (a) are polymers formed by condensation of linear aliphatic diamines with linear aliphatic dicarboxylic acids and aromatic dicarboxylic acids, and (b) have terminal amino group contents of at least 0.4 mequiv/g.
摘要:
Resin compositions comprising (A) polyethylene ether resins, (B) polyamide resins, (C) elastomeric substances, and (D) needle-shaped titanium oxide are disclosed. The disclosed resins exhibit an excellent balance of stiffness and impact resistance, low linear coefficient of expansion, and good heat resistance, oil resistance, forming processability and molding surface appearance.
摘要:
A resin composition which has improved resistance to yellowing due to light without loss of the superior characteristics of polyphenylene ether polyamide resins comprises (A) a polyphenylene ether resin, (B) a polyamide resin, (C) a styrene thermoplastic resin, (D) a pigment; wherein the styrene thermoplastic resin and the pigment are dispersed in the polyphenylene ether resin and the polyphenylene ether resin is a particulate dispersion in the polyamide resin. The composition may further comprise a rubber polymer wherein the rubber polymer is dispersed in the polyphenylene ether resin.
摘要:
Resin composition comprising 8-10 parts by weight of a polyphenylene ether resin, 90-20 parts by weight of a polyamide resin, and 30-70 parts by weight, per 100 parts by weight of the polyphenylene ether resin and the polyamide resin combined, of a plate or flake like inorganic filler wherein the inorganic filler has an average particle size of no more than 5 .mu.m and as aspect ratio of no less than 3 and wherein the difference between the crystallization initiation temperature of a composition comprising 90 weight percent polyamide and 10 weight percent of the inorganic filler and the crystallization initiation temperature of the polyamide resin is 5.degree. C. or less. The resin compositions have excellent surface smoothness, high rigidity, a small linear expansion coefficient, and good impact resistance, heat resistance and chemical resistance.
摘要:
Increasing the endcap level to a level greater than about 90% for Optical Quality (OQ) Melt Polycarbonate significantly reduces the as-molded static charge for injection molded parts for Optical Disc applications. The use of resins with higher endcap levels in combination with antistatic additives provides a highly robust formulation suitable for even the most demanding emerging formats as Digital Versatile Disc (DVD) and in all commercial Optical media molding machines. Thus, optical quality polycarbonates are prepared by performing a base-catalyzed polymerization of a diaryl carbonate and a dihydric phenol under conditions effective to produce a polycarbonate product having an endcap level of 90% or greater.
摘要:
The present invention provides a method for making a polycarbonate composition. The polycarbonate is prepared by melt synthesis using a sulfur-containing acid compound to at least partially quench the melt catalyst. The polycarbonate composition comprises said polycarbonate, phosphorous acid, further sulfur-containing acid compound and an ester derived from a mono-fatty acid and a polyhydric alcohol.