Biocompatible and Bioabsorbable Derivatized Chitosan Compositions
    201.
    发明申请
    Biocompatible and Bioabsorbable Derivatized Chitosan Compositions 有权
    生物相容性和生物可吸收的衍生壳聚糖组合物

    公开(公告)号:US20160266143A1

    公开(公告)日:2016-09-15

    申请号:US14638770

    申请日:2015-03-04

    Abstract: The invention relates to biocompatible, bioabsorbable derivatized non-crosslinked chitosan compositions optionally crosslinked to gelatin/collagen by 1-ethyl-3-[3-dimethylaminopropyl]carbodiimide hydrochloride (EDC) for biomedical use and methods of making and testing such compositions, including a modified acute systemic toxicity test. The compositions comprise derivatized chitosan reacetylated to a degree of N-deacetylation (DDA) of between about 15% and 40%. The compositions are typically bioabsorbed in about 90 days or less and can be made to bioabsorb at differing rates of speed. The compositions are initially soluble in aqueous solution below pH 6.5. The compositions have an acid content that can be adjusted between about 0% (w/w) and about 8% (w/w) to customize the composition for uses that require and/or tolerate differing levels of cytotoxicity, adhesion, composition cohesion, and cell infiltration into the composition.

    Abstract translation: 本发明涉及用于生物医学使用的1-乙基-3- [3-二甲基氨基丙基]碳二亚胺盐酸盐(EDC),任选地交联至明胶/胶原的生物相容性,生物可吸收的衍生的非交联壳聚糖组合物,以及制备和测试这些组合物的方法,包括 改良型急性全身毒性试验。 组合物包含重新乙酰化至约15%至40%的N-脱乙酰度(DDA)的衍生的壳聚糖。 组合物通常在约90天或更短时间内生物吸收,并且可以以不同的速度制成生物吸收。 组合物最初可溶于低于pH6.5的水溶液中。 组合物的酸含量可以在约0%(w / w)至约8%(w / w)之间调节,以定制需要和/或耐受不同水平的细胞毒性,粘附性,组成内聚力, 和细胞浸润到组合物中。

    RESIN COMPOSITION AND RESIN MOLDED ARTICLE
    204.
    发明申请
    RESIN COMPOSITION AND RESIN MOLDED ARTICLE 审中-公开
    树脂组合物和树脂成型品

    公开(公告)号:US20160024297A1

    公开(公告)日:2016-01-28

    申请号:US14620673

    申请日:2015-02-12

    Inventor: Akira IMADA

    CPC classification number: C08L67/04 C08K5/0025 C08L67/02 C08L2201/06

    Abstract: A resin composition includes an aromatic polyester resin, a polylactic acid resin, and at least one compound selected from a carbodiimide compound, an epoxy compound, an oxazoline compound, an oxazine compound, and an aziridine compound, wherein the resin composition has only one peak of tan σ obtainable by a viscoelasticity measurement in a temperature range of 60° C. to 90° C.

    Abstract translation: 树脂组合物包括芳族聚酯树脂,聚乳酸树脂和选自碳二亚胺化合物,环氧化合物,恶唑啉化合物,恶嗪化合物和氮丙啶化合物中的至少一种化合物,其中树脂组合物仅具有一个峰 的tan&sgr 可以通过在60℃至90℃的温度范围内的粘弹性测量获得。

    Poly-3-hydroxyalkanoate resin composition and molded article
    205.
    发明授权
    Poly-3-hydroxyalkanoate resin composition and molded article 有权
    聚-3-羟基链烷酸酯树脂组合物和模制品

    公开(公告)号:US09221972B2

    公开(公告)日:2015-12-29

    申请号:US14410895

    申请日:2013-06-13

    CPC classification number: C08L67/04 C08L2201/06 C08L31/04

    Abstract: A poly-3-hydroxyalkanoate resin composition having excellent ductility and transparency, and a molded article thereof. The poly-3-hydroxyalkanoate resin composition includes: a poly-3-hydroxyalkanoate resin (A); and an ethylene-vinyl acetate copolymer resin (B) having a vinyl acetate content of 65 to 95 wt %, wherein the resin (A) and the resin (B) are miscible and a ratio of resin (A)/resin (B) is 90/10 to 55/45 (wt/wt). The molded article is produced using such a poly-3-hydroxyalkanoate resin composition.

    Abstract translation: 具有优异的延展性和透明性的聚-3-羟基链烷酸酯树脂组合物及其成型品。 聚-3-羟基链烷酸酯树脂组合物包括:聚-3-羟基链烷酸酯树脂(A); 和乙酸乙烯酯含量为65〜95重量%的乙烯 - 乙酸乙烯酯共聚物树脂(B),其中树脂(A)和树脂(B)是可混溶的,树脂(A)/树脂(B)的比例 为90/10〜55/45(wt / wt)。 使用这种聚-3-羟基链烷酸酯树脂组合物制造模塑制品。

    Composition for the degradation of plastic
    206.
    发明授权
    Composition for the degradation of plastic 有权
    塑料降解成分

    公开(公告)号:US09181412B2

    公开(公告)日:2015-11-10

    申请号:US14159075

    申请日:2014-01-20

    Applicant: Manuel Rendon

    Inventor: Manuel Rendon

    Abstract: A composition for the degradation of plastic in the form of an additive used during the manufacturing of plastic. The composition being comprised of a predetermined amount of heptane, cellulose, methyl rhenium trioxide, butylated hydroxytoluene, and polyphenol oxidase. The additive can be selectively programmed to cause the plastic to begin disintegrating at a predetermined time.

    Abstract translation: 用于在塑料制造期间使用的添加剂形式的塑性降解的组合物。 该组合物由预定量的庚烷,纤维素,甲基铼三氧化物,丁基化羟基甲苯和多酚氧化酶组成。 可以选择性地编程添加剂以使塑料在预定时间开始分解。

    Absorbable Bimodal Polymeric Blend Compositions, Processing Methods, and Medical Devices
    208.
    发明申请
    Absorbable Bimodal Polymeric Blend Compositions, Processing Methods, and Medical Devices 有权
    可吸收双峰聚合物混合组合物,加工方法和医疗器械

    公开(公告)号:US20150159011A1

    公开(公告)日:2015-06-11

    申请号:US14533274

    申请日:2014-11-05

    Applicant: Ethicon, Inc.

    Abstract: Novel absorbable polymeric blends having bimodal molecular weight distribution are disclosed. The bimodal blends have a first component that is a polylactide polymer or a copolymer of lactide and glycolide having a bimodal molecular weight distribution, and a second component that is a poly(p-dioxanone) polymer of unimodal or bimodal molecular weight distribution. Alternately, the bimodal blends have a first component that is a polylactide polymer or a copolymer of lactide and glycolide having a unimodal molecular weight distribution, and a second component that is a poly(p-dioxanone) polymer of bimodal molecular weight distribution. The novel polymeric bimodal molecular weight blends provide medical devices having improved dimensional stability. Also disclosed are novel absorbable medical devices made from these novel bimodal polymer blends, as well as novel methods of manufacture.

    Abstract translation: 公开了具有双峰分子量分布的新型可吸收聚合物共混物。 双峰共混物具有第一组分,其是聚丙交酯聚合物或具有双峰分子量分布的丙交酯和乙交酯的共聚物,以及作为单峰或双峰分子量分布的聚(对二恶烷酮)聚合物的第二组分。 或者,双峰共混物具有第一组分,其是具有单峰分子量分布的聚丙交酯聚合物或丙交酯和乙交酯的共聚物,以及作为双峰分子量分布的聚(对二恶烷酮)聚合物的第二组分。 新型聚合双峰分子量共混物提供具有改进的尺寸稳定性的医疗装置。 还公开了由这些新型双峰聚合物共混物制成的新型可吸收医疗装置,以及新颖的制造方法。

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