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    • 103. 发明申请
    • Polyester compositions which comprise cyclobutanediol ethylene glycol, titanium, and phosphorus with improved color and manufacturing processes therefor
    • 包含改进颜色的环丁二醇乙二醇,钛和磷的聚酯组合物及其制备方法
    • US20070142511A1
    • 2007-06-21
    • US11635433
    • 2006-12-07
    • Emmett Crawford
    • Emmett Crawford
    • C08K5/49
    • C08K5/057C08G63/199C08G63/85C08K5/523C08L67/02
    • Described as one aspect of the invention are polyester compositions comprising at least one polyester which comprises: (a) a dicarboxylic acid component comprising: (i) about 90 to about 100 mole % of terephthalic acid residues; (ii) about 0 to about 10 mole % of aromatic and/or aliphatic dicarboxylic acid residues having up to 20 carbon atoms; and (b) a glycol component comprising: (i) about 1 to less than 90 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and (ii) about 0 to about 89 mole % cyclohexanedimethanol residues; (iii) greater than 10 mole % ethylene glycol residues, and (iv) less than about 2 mole % of a modifying glycol having from 3 to 16 carbon atoms; (c) titanium atoms and phosphorus atoms, wherein the total mole % of the dicarboxylic acid component is 100 mole %, and wherein the total mole % of the glycol component is 100 mole %; and wherein the inherent viscosity of the polyester is from 0.50 to 1.2 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.25 g/50 ml at 25° C. The polyesters may be manufactured into articles.
    • 描述为本发明的一个方面是包含至少一种聚酯的聚酯组合物,其包含:(a)二羧酸组分,其包含:(i)约90至约100摩尔%的对苯二甲酸残基; (ii)约0至约10摩尔%的具有至多20个碳原子的芳族和/或脂族二羧酸残基; 和(b)二元醇组分,其包含:(i)约1至小于90摩尔%的2,2,4,4-四甲基-1,3-环丁二醇残基; 和(ii)约0至约89摩尔%的环己烷二甲醇残基; (iii)大于10摩尔%的乙二醇残基,和(iv)小于约2摩尔%的具有3至16个碳原子的改性二醇; (c)钛原子和磷原子,其中二羧酸组分的总摩尔%为100摩尔%,其中二醇组分的总摩尔%为100摩尔%; 并且其中在25℃下以0.25g / 50ml的浓度在60/40(wt / wt)苯酚/四氯乙烷中测定的聚酯的特性粘度为0.50至1.2dL / g。聚酯可制成 文章。
    • 104. 发明申请
    • FLAME RETARDANT THERMOPLASTIC COMPOSITIONS HAVING EMI SHIELDING
    • 具有EMI屏蔽功能的阻燃热塑性组合物
    • US20070105994A1
    • 2007-05-10
    • US11619686
    • 2007-01-04
    • Gang LiThomas EbelingMonica MaruganZhaohui QuSrinivas SiripurapuDavid Zou
    • Gang LiThomas EbelingMonica MaruganZhaohui QuSrinivas SiripurapuDavid Zou
    • C08K5/49
    • C08L69/00C08K5/523C08K7/06C08L51/00C08L55/02C08L83/10C08L2666/02C08L83/00
    • A flame retardant thermoplastic composition having excellent physical properties that includes 20 to 90 wt. % of a polycarbonate resin; from 1 to 35 wt. % of an impact modifier; from 0.5 to 30 wt. % of a polysiloxane-polycarbonate copolymer including from 8 to 30 wt. % polydimethylsiloxane units or the equivalent molar amount of other diorganosiloxane units; from 0.5 to 20 wt. % of a phosphorus-containing flame retardant, and from 3 to 30 wt. % of metal fiber, each based on the total combined weight of the thermoplastic composition, exclusive of any filler. In one embodiment, a molded sample of the thermoplastic composition having a thickness of 3.0 mm (±10%) has an EMI shielding of at least 20 dB. In addition, a molded sample of the thermoplastic composition is capable of achieving UL94 V0 or V1 rating at a thickness of 1.5 mm (±10%). The compositions are useful in forming flame retardant articles having EMI shielding characteristics.
    • 具有优异物理性能的阻燃热塑性组合物,其包含20〜90重量% %的聚碳酸酯树脂; 1至35wt。 %抗冲改性剂; 0.5至30wt。 %的聚硅氧烷 - 聚碳酸酯共聚物,其包含8至30重量% %的聚二甲基硅氧烷单元或等摩尔量的其它二有机硅氧烷单元; 0.5至20wt。 %的含磷阻燃剂,和3〜30wt。 %的金属纤维,各自基于热塑性组合物的总组合重量,不包括任何填料。 在一个实施方案中,厚度为3.0mm(±10%)的热塑性组合物的模塑样品具有至少20dB的EMI屏蔽。 此外,热塑性组合物的模塑样品能够达到1.5mm(±10%)厚度的UL94V0或V1等级。 该组合物可用于形成具有EMI屏蔽特性的阻燃制品。