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公开(公告)号：US5780704A
公开(公告)日：1998-07-14
申请号：US68085
申请日：1993-05-28
CPC分类号： C07C51/09 , C08J11/16 , C08J2367/04 , Y02W30/705
摘要： A process for decomposing a thermoplastic polymer composition which comprises a polyhydroxycarboxylic acid base polymer as a primary component in an alkaline solution, recovering hydroxycarboxylic acid from the solution by electrodialysis or acid-precipitation and using the recovered hydroxycarboxylic acid for a polymer material, when desired, is provided.
摘要翻译： 一种在碱性溶液中分解包含聚羟基羧酸基聚合物作为主要组分的热塑性聚合物组合物的方法，通过电渗析或酸沉淀从溶液中回收羟基羧酸，并且如果需要，使用回收的羟基羧酸， 被提供。
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公开(公告)号：US5447962A
公开(公告)日：1995-09-05
申请号：US186920
申请日：1994-01-27
申请人： Masanobu Ajioka , Katashi Enomoto , Akihiro Yamaguchi , Kazuhiko Suzuki , Takayuki Watanabe , Yasuhiro Kitahara
发明人： Masanobu Ajioka , Katashi Enomoto , Akihiro Yamaguchi , Kazuhiko Suzuki , Takayuki Watanabe , Yasuhiro Kitahara
CPC分类号： C08J9/06 , C08J9/14 , C08J2367/04 , Y10S521/916
摘要： Foams comprising innumerable cells dispersed in thermoplastic polymer compositions substantially consisting of polylactic acid or a copolymer of lactic acid and hydroxycarboxylic acid and having degradable characteristics in the natural environment.The foams can be used for containers such as food trays and throw away cups comprising molded sheet foam of a thermoplastic and degradable polymer or heat insulating materials and cushioning materials comprising bulk foam.
摘要翻译： 包含分散在基本上由聚乳酸或乳酸和羟基羧酸的共聚物组成的热塑性聚合物组合物中的无数细胞的泡沫在天然环境中具有可降解的特性。 泡沫可以用于诸如食物托盘的容器，并且丢弃包括热塑性和可降解聚合物的模塑片状泡沫或包含散装泡沫的隔热材料和缓冲材料的杯子。
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公开(公告)号：US5556711A
公开(公告)日：1996-09-17
申请号：US380311
申请日：1995-01-30
CPC分类号： B32B15/08 , Y10T428/1355 , Y10T428/31678 , Y10T428/31688
摘要： A multilayer composite consisting of aluminum and a resin composition primarily comprising a lactic acid base polymer, is disclosed. The composite material is excellent in mechanical and gas barrier properties and has characteristic of totally decomposing under alkaline conditions.
摘要翻译： 公开了一种由铝和主要包含乳酸基聚合物的树脂组合物组成的多层复合材料。 复合材料的机械和气体阻隔性能优异，具有在碱性条件下完全分解的特点。
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公开(公告)号：US5763098A
公开(公告)日：1998-06-09
申请号：US892265
申请日：1997-07-14
IPC分类号： B32B27/10 , B32B27/36 , C08G63/16 , C08G63/60 , C08G63/81 , C08L67/00 , C08L67/02 , D04H1/42 , D04H13/00 , D06N7/04 , C08G63/02
CPC分类号： C08L67/02 , B32B27/10 , B32B27/36 , C08G63/16 , C08G63/60 , C08G63/81 , C08L67/00 , D04H1/4258 , D04H1/435 , C08L2201/06 , Y10T428/24355 , Y10T428/249921 , Y10T428/2913 , Y10T428/3179
摘要： Formed products such as foams, fabrics for industrial materials, filaments, nonwoven fabrics, composite materials and films which are degradable after use with ease in the natural environment are prepared by using a high molecular weight aliphatic polyester obtained by direct polycondensation of an aliphatic polyhydric alcohol with aliphatic polybasic acid or additionally hydroxycarboxylic acid or oligomers of these materials in a reaction mixture containing a solvent. Foams have excellent thermal insulation and strength; fabrics are excellent in thermal insulation, strength and elongation and can be used for industrial materials; filaments have sufficient strength, flexibility and degradability in a living body and can be used for bioabsorbable surgical filament and fishing lines; nonwoven fabrics can be obtained by bonding a web of filaments and have excellent strength and feeling; composite materials can be prepared by adhering or impregnating fiber, paper, film and others of cellulosics and have excellent strength and water resistance, good flexibility and folding resistance, simultaneously have degradability in the natural environment, and can dissolve polymer films on the surface with ease under alkaline conditions to recover cellulosics alone; and films are excellent in heat resistance and strength.
摘要翻译： 通过使用通过脂肪族多元醇的直接缩聚得到的高分子量脂肪族聚酯，可以制备如在天然环境中容易使用后可降解的泡沫，工业用材料，长丝，无纺布，复合材料和薄膜等成型产品 与脂族多元酸或另外的羟基羧酸或这些物质的低聚物在含有溶剂的反应混合物中。 泡沫具有优良的保温和强度; 织物绝热性，强度和伸长率优良，可用于工业材料; 细丝在活体中具有足够的强度，柔韧性和降解性，可用于生物可吸收的手术细丝和钓鱼线; 非织造织物可以通过粘合丝网而获得，并且具有优异的强度和感觉; 复合材料可以通过粘合或浸渍纤维素的纤维，纸，膜等而具有优异的强度和耐水性，良好的柔韧性和耐折叠性，同时在天然环境中具有降解性，并且可以容易地溶解表面上的聚合物膜 在碱性条件下单独回收纤维素; 并且膜的耐热性和强度优异。
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公开(公告)号：US5714230A
公开(公告)日：1998-02-03
申请号：US340902
申请日：1994-11-15
IPC分类号： B32B27/10 , B32B27/36 , C08G63/16 , C08G63/60 , C08G63/81 , C08L67/00 , C08L67/02 , D04H1/42 , D04H13/00 , D06N7/04 , B32B00/00
CPC分类号： C08L67/02 , B32B27/10 , B32B27/36 , C08G63/16 , C08G63/60 , C08G63/81 , C08L67/00 , D04H1/4258 , D04H1/435 , C08L2201/06 , Y10T428/24355 , Y10T428/249921 , Y10T428/2913 , Y10T428/3179
摘要： Formed products such as foams, fabrics for industrial materials, filaments, nonwoven fabrics, composite materials and films which are degradable after use with ease in the natural environment are prepared by using a high molecular weight aliphatic polyester obtained by direct polycondensation of an aliphatic polyhydric alcohol with aliphatic polybasic acid or additionally hydroxycarboxylic acid or oligomers of these materials in a reaction mixture containing a solvent. Foams have excellent thermal insulation and strength; fabrics are excellent in thermal insulation, strength and elongation and can be used for industrial materials; filaments have sufficient strength, flexibility and degradability in a living body and can be used for bioabsorbable surgical filament and fishing lines; nonwoven fabrics can be obtained by bonding a web of filaments and have excellent strength and feeling; composite materials can be prepared by adhering or impregnating fiber, paper, film and others of cellulosics and have excellent strength and water resistance, good flexibility and folding resistance, simultaneously have degradability in the natural environment, and can dissolve polymer films on the surface with ease under alkaline conditions to recover cellulosics alone; and films are excellent in heat resistance and strength.
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公开(公告)号：US6136905A
公开(公告)日：2000-10-24
申请号：US996477
申请日：1997-12-22
摘要： A lactic acid polymer composition comprising formulating 100 parts by weight of a mixture consisting of 80-95% by weight of an L-lactic acid polymer having an L-lactic acid proportion of 75% or more and 5-20% by weight of a plasticizer selected from the group consisting of a polyhydric alcohol ester and a hydroxypolycarboxylic acid ester, 0.1-5 parts by weight of an anti-blocking agent having a SiO.sub.2 content of 90% or more and an average particle size of 7-50 nm, and 0.1-2 parts by weight of a slip agent; a molded product and film obtained from the composition; and a preparation process of the same are disclosed. The molded product and film are excellent in processability, transparency, flexibility, anti-blocking property and slip, and can be degraded into harmless water and carbon dioxide under natural environment, when abandoned.
摘要翻译： 一种乳酸聚合物组合物，其包含配制100重量份的由80-95重量％的L-乳酸比例为75％以上的L-乳酸聚合物和5-20重量％的由 选自多元醇酯和羟基多羧酸酯的增塑剂，0.1-5重量份SiO 2含量为90％以上，平均粒径为7-50nm的防粘连剂，以及 0.1-2重量份的滑爽剂; 由该组合物获得的成型品和膜; 并公开了其制备方法。 成型品和膜的加工性，透明性，柔软性，防粘连性和滑爽性优异，在被废弃时可以在自然环境下降解成无害的水和二氧化碳。
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公开(公告)号：US5916950A
公开(公告)日：1999-06-29
申请号：US895828
申请日：1997-07-17
申请人： Shoji Obuchi , Takayuki Watanabe , Yasuhiro Kitahara , Tomoyuki Nakata , Kazuhiko Suzuki , Masanobu Ajioka
发明人： Shoji Obuchi , Takayuki Watanabe , Yasuhiro Kitahara , Tomoyuki Nakata , Kazuhiko Suzuki , Masanobu Ajioka
摘要： A thermal resistant resin composition comprising 100 parts by weight of polyester (A) having 25-75% by weight of a lactic acid component consisting of 25-75% by weight of a lactic acid-based polymer (a1) and 25-75% by weight of other aliphatic polyester (a2) having a melting point of 100-250.degree. C., and 0.1-70 parts by weight of a crystalline inorganic filler (B) containing 10% by weight or more of SiO.sub.2. The thermal resistant resin composition of the invention performs following function:1) injection molding can be carried out at a mold temperature of Tg or less or around room temperature with a short molding-cycle,2) quick crystallization velocity and satisfactory crystallinity can be attained in the molding step, and3) the molded articles have, as a result, excellent thermal resistance and generate properties of low deterioration of a high polymer component and slow embrittlement in use.
摘要翻译： 一种耐热性树脂组合物，其包含100重量份具有25-75重量％的由25-75重量％的乳酸基聚合物（a1）和25-75重量％的乳酸基聚合物（a1）组成的乳酸组分的聚酯（A） 的熔点为100-250℃的其它脂族聚酯（a2）和0.1-70重量份含有10重量％以上SiO 2的结晶无机填料（B）。 本发明的耐热树脂组合物具有以下功能：1）注塑成型可以在Tg或更低的温度下或在室温附近以较短的成型周期进行，2）快速结晶速度，并且可以获得令人满意的结晶度 在模塑步骤中，和3）模塑制品具有优异的耐热性，并且产生高聚合物组分的劣化劣化和使用中的缓慢脆化性能。
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公开(公告)号：US5691424A
公开(公告)日：1997-11-25
申请号：US450927
申请日：1995-05-25
摘要： A preparation process of heat-resistant molded articles of a lactic acid-based polymer comprising mixing the lactic acid-based polymer and poly-.epsilon.-caprolactone so as to obtain a L-lactic acid ratio of 75% by weight or more, adding to the polymer mixture a crystalline inorganic powder containing 50% by weight or more of SiO.sub.2, melt-kneading the resultant composition, filling the same into a mold which is set at 85.degree..about.125.degree. C. and forming a shape while promoting crystallization. The molded articles have excellent heat resistance and impact strength, are suitably used for food trays and beverage cups, and can be degraded, in the case of waste, into nontoxic water and carbon dioxide like natural products within a relatively short period in the natural environment.
摘要翻译： 一种乳酸类聚合物的耐热成型体的制备方法，其特征在于，将乳酸类聚合物和聚ε-己内酯混合，得到75重量％以上的L-乳酸比例，添加到 聚合物混合物是含有50重量％以上SiO 2的结晶无机粉末，将所得组合物熔融捏合，将其填充到设定在85℃125℃的模具中并形成同时促进结晶。 模塑制品具有优异的耐热性和冲击强度，适用于食品托盘和饮料杯，并且在废物的情况下可以在自然环境相对短的时间内降解成无毒的水和二氧化碳如天然产物 。
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公开(公告)号：US5409751A
公开(公告)日：1995-04-25
申请号：US32284
申请日：1993-03-17
CPC分类号： B65D65/466 , B29C49/0005 , C08L67/04 , B29K2067/00 , B29K2067/046 , B29K2995/0026 , B29K2995/0063 , B29K2995/0089 , Y02W90/12 , Y02W90/13 , Y10T428/139 , Y10T428/1397
摘要： A degradable container which is excellent in transparency and impact strength and can be decomposed into nontoxic water and carbon dioxide in the natural environment within a relatively short period can be obtained by using the process for molding a container of an arbitrary shape from a thermoplastic composition having polylactic acid of lactic acids or a copolymer of lactic acids and other hydroxycarboxylic acids as a main component, preforming the composition and thereafter molding the container in a temperature range from Tg to Tg+60.degree. C. on the basis of the glass transition temperature Tg of the thermoplastic polymer composition and under the condition of a draw ratio of 6 times or less.
摘要翻译： 通过使用从具有任意形状的容器成型任意形状的容器的方法可以获得透明度和冲击强度优异并且可以在相对较短的时间内在自然环境中分解成无毒水和二氧化碳的可降解容器，该方法由具有 乳酸的聚乳酸或乳酸与其它羟基羧酸的共聚物作为主要成分，预先形成组合物，然后基于玻璃化转变温度Tg在Tg至Tg + 60℃的温度范围内成型容器 的热塑性聚合物组合物，并且在拉伸比为6倍以下的条件下进行。
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10.发明授权Films and molded articles formed from aliphatic polyester compositions containing nucleating agents 失效由含有成核剂的脂肪族聚酯组合物形成的薄膜和模制品公开(公告)号：US06417294B1
公开(公告)日：2002-07-09
申请号：US08767880
申请日：1996-12-17
申请人： Shoji Obuchi , Tatsuya Kawaguchi , Tomoyuki Nakata , Takayuki Watanabe , Yasuhiro Kitahara , Kazuhiko Suzuki , Masanobu Ajioka
发明人： Shoji Obuchi , Tatsuya Kawaguchi , Tomoyuki Nakata , Takayuki Watanabe , Yasuhiro Kitahara , Kazuhiko Suzuki , Masanobu Ajioka
IPC分类号： C08G6306
CPC分类号： C08K5/20 , Y10T428/1352 , C08L67/04
摘要： An aliphatic polyester formed item having transparency and crystallinity in combination by crystallizing, in the course of or after processing, an aliphatic polyester composition comprising aliphatic polyester and one or more transparent nucleating agent selected from the group consisting of aliphatic carboxylic acid amide, aliphatic carboxylic acid salt, aliphatic alcohol and aliphatic carboxylic acid ester having a melting point of 40-300° C.
摘要翻译： 一种具有透明度和结晶度的脂肪族聚酯成型品，其组合为在加工过程中结晶或加工后结合脂族聚酯组合物，其包含脂族聚酯和一种或多种透明成核剂，所述成核剂选自脂族羧酸酰胺，脂族羧酸 盐，脂肪醇和脂肪族羧酸酯，熔点为40-300℃
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