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    Composition and process for recovering coated polyester materials
    1.
    发明申请
    Composition and process for recovering coated polyester materials 审中-公开
    回收涂层聚酯材料的组成和工艺

    公开(公告)号：US20030186159A1

    公开(公告)日：2003-10-02

    申请号：US10109557

    申请日：2002-03-28

    发明人： John A. Schwartz JR.

    IPC分类号： G03C007/30 ,  G03C007/42

    CPC分类号： C08J11/06 ,  C08J2367/02 ,  G03C1/7954 ,  G03C11/24 ,  Y02W30/701

    摘要： The present invention is directed to a process for separating polyester materials from various coating materials. In general, the process includes the steps of mixing polyester materials which have coatings adhered to the surface with an alkaline composition in a mixer. The alkaline composition contains a solution of a Group I alkaline compound and a Group II alkaline compound. The mixer imparts sufficient energy to the slurry to provide substantially complete, even coating of the polyester containing materials with the alkaline composition and cause separation of the coating materials from the surface of the polyester substrate. The mixture can be dried causing the remaining coating materials to form a dry powder mixed with the polyester substrate. After drying, the coating materials can be substantially removed from the polyester substrate by one or more dry separation techniques. After being subjected to the dry separation techniques, any remaining coating materials can be removed from the polyester substrate by a standard wash or rinse technique. Through the process of the present invention, polyester can be separated and recovered from waste materials such as those containing non-aqueous based silver emulsion coatings found in digitally printed X-ray films and the silver in such films can also be recovered. Through use of dry separation techniques, many environmental concerns and disposal problems encountered due to water treatment requirements of aqueous separation techniques can be alleviated.

    摘要翻译： 本发明涉及从各种涂料分离聚酯材料的方法。 通常，该方法包括在混合器中将具有附着到表面的涂层与具有碱性组合物的聚酯材料混合的步骤。 碱性组合物含有I族碱性化合物和II族碱性化合物的溶液。 混合器为浆料赋予足够的能量以提供具有碱性组合物的含聚酯的材料的基本上完整的均匀涂层，并使涂层材料与聚酯基材的表面分离。 可以干燥混合物，使剩余的涂料形成与聚酯基材混合的干粉。 干燥后，可以通过一种或多种干法分离技术从涂料基本上除去涂料。 经过干法分离技术后，可以通过标准的洗涤或冲洗技术从聚酯基材中除去任何剩余的涂料。 通过本发明的方法，可以从诸如在数字印刷的X射线胶片中发现的非水基银乳剂涂层的废料中分离回收聚酯，并且也可以回收这种膜中的银。 通过使用干式分离技术，可以减轻由于水分离技术的水处理要求而遇到的许多环境问题和处理问题。

    Recovery of photographic film base
    4.
    发明授权
    Recovery of photographic film base 失效
    照相底片的回收

    公开(公告)号：US5500328A

    公开(公告)日：1996-03-19

    申请号：US372276

    申请日：1995-01-12

    申请人： Robert G. Surash ,  Craig C. Lewis

    发明人： Robert G. Surash ,  Craig C. Lewis

    IPC分类号： C08B3/06 ,  C08J11/06 ,  G03C11/24 ,  C08B3/26

    CPC分类号： C08J11/06 ,  C08B3/06 ,  G03C11/24 ,  C08J2301/12 ,  Y02W30/701

    摘要： A process is described for recovering cellulose triacetate from scrap photographic film, using aqueous solutions free of organic solvents, by the steps of:a) reducing the film to segments of handlable size;b) oxidizing the film with an oxidizing agent comprising an alkali metal permanganate and a strong acid;c) oxidizing the product of step b) with an alkali metal hypochlorite to remove stain from iron compound and yellow dye;d) bleaching the product of step c) with an alkali metal metabisulfite in an acidic environment; ande) recovering cellulose triacetate.The recovered cellulose triacetate prepared in accordance with this invention has essentially the same spectral absorption at 400 nm as virgin cellulose triacetate and can be used to prepare photographic film base of acceptable color purity.

    摘要翻译： 描述了一种使用不含有机溶剂的水溶液从废料照相胶片回收纤维素三乙酸酯的方法，步骤如下：a）将膜还原成可拉伸尺寸的片段; b）用包含碱金属高锰酸盐和强酸的氧化剂氧化膜; c）用碱金属次氯酸盐氧化步骤b）的产物以除去铁化合物和黄色染料的污渍; d）在酸性环境中用碱金属偏亚硫酸氢盐漂白步骤c）的产物; 和e）回收三乙酸纤维素。 根据本发明制备的回收的三乙酸纤维素在400nm处具有与原始纤维素三乙酸酯基本相同的光谱吸收，并且可用于制备可接受的色纯度的照相底片。

    Process for recovering support from photographic film
    5.
    发明授权
    Process for recovering support from photographic film 失效
    从摄影胶片中回收支持的过程

    公开(公告)号：US5017455A

    公开(公告)日：1991-05-21

    申请号：US507439

    申请日：1990-04-11

    申请人： Goichi Hayashi ,  Sajuro Fujimagari ,  Kensaku Nakamura ,  Ryuichi Ishida

    发明人： Goichi Hayashi ,  Sajuro Fujimagari ,  Kensaku Nakamura ,  Ryuichi Ishida

    IPC分类号： G03C11/24

    CPC分类号： G03C11/24

    摘要： A process for recovering a support from a photographic film is disclosed. The photographic film comprises the support and an undercoating layer provided thereon. The support is made of cellulose triacetate film base. The undercoating layer contains gelatin and cellulose nitrate. According to the present invention, the process comprises the steps of: (I) treating the photographic film with an aqueous solution of a surfactant; and then (II) treating the photographic film with an aqueous solution of a protease to remove the undercoating layer from the support. The aqueous solution of the protease used at the step of (II) preferably further contains an anionic surfactant. It is also preferred that the process further contains the step of (III) treating the recovered support with an aqueous solution of hydrogen peroxide to bleach the support.

    摘要翻译： 公开了从摄影胶片中回收支持体的方法。 摄影胶片包括支撑体和设置在其上的底涂层。 载体由三乙酸纤维素薄膜基材制成。 底涂层含有明胶和硝酸纤维素。 根据本发明，该方法包括以下步骤：（I）用表面活性剂的水溶液处理照相胶片; 然后（II）用蛋白酶水溶液处理照相胶片以从载体上除去底涂层。 在（II）的步骤中使用的蛋白酶的水溶液优选还含有阴离子表面活性剂。 还优选的是，该方法还包括（III）的步骤，用过氧化氢水溶液处理回收的载体以漂白载体。

    Apparatus for the destruction of microfiches and the like
    6.
    发明授权
    Apparatus for the destruction of microfiches and the like 失效
    用于破坏微胶粒等的装置

    公开(公告)号：US4355227A

    公开(公告)日：1982-10-19

    申请号：US32473

    申请日：1979-04-23

    申请人： Jean-Claude Berard

    发明人： Jean-Claude Berard

    IPC分类号： G03C11/00 ,  G03C11/24 ,  H05B3/00

    CPC分类号： G03C11/00 ,  G03C11/24

    摘要： Microfiches to be destroyed by heat treatment are placed within a disposable tube fitted with a sealing plug, then baked to a sufficient temperature to cause melting and discarded. The apparatus comprises an electric heating resistor and a tubular heating jacket for receiving the disposable tube, the sealing plug being forcibly engaged in the tube by means of a cap which is screwed down by hand. All negative sheets and documents having a photosensitive surface such as microfiches are destroyed economically without any contaminating waste products.

    摘要翻译： 通过热处理破坏的微晶被放置在装有密封塞的一次性管中，然后烘烤至足够的温度以使其熔化并丢弃。 该装置包括电加热电阻器和用于接收一次性管的管状加热套管，密封塞通过用手拧紧的盖板强制地接合在管子中。 具有感光表面如微细纤维的所有负片和文件在经济上被破坏而没有任何污染的废物。

    Process for stripping photographic materials
    7.
    发明授权
    Process for stripping photographic materials 失效
    剥离照相材料的方法

    公开(公告)号：US4150977A

    公开(公告)日：1979-04-24

    申请号：US846189

    申请日：1977-10-27

    申请人： Patrick A. Phillips

    发明人： Patrick A. Phillips

    IPC分类号： C22B3/18 ,  C22B11/00 ,  G03C11/24 ,  C22B11/04

    CPC分类号： G03C11/24 ,  C22B11/04 ,  C22B3/18 ,  Y02P10/234

    摘要： This invention provides a method and apparatus for treating photographic film to recover silver and the plastic base layer for re-use. A wash tank containing warm water at about neutral pH contains at least one enzyme from the following group: protease, amylase, lipase. The water in the wash tank is agitated and the enzymes attack the adhesive and organic layers on the plastic base, in order to loosen and remove these materials. The film is then placed in a rinse tank containing either a weak aqueous glycol solution or a weak caustic solution which is agitated. Finally the film is removed from the rinse tank and dried. Liquid is removed from the wash tank and treated to remove silver therefrom.

    摘要翻译： 本发明提供了一种用于处理照相胶片以回收银的方法和装置，以及用于再次使用的塑料基层。 含有大约中性pH温水的洗涤槽含有至少一种来自下列组的酶：蛋白酶，淀粉酶，脂肪酶。 洗涤槽中的水被搅动，酶侵蚀塑料基底上的粘合剂和有机层，以便松动和去除这些材料。 然后将膜置于含有弱水溶液或搅拌的弱苛性碱溶液的漂洗槽中。 最后将薄膜从漂洗槽中取出并干燥。 将液体从洗涤槽中取出并处理以从其中除去银。

    Process for recovery of clean polyester materials
    9.
    发明授权
    Process for recovery of clean polyester materials 失效
    清洁聚酯材料回收工艺

    公开(公告)号：US3928253A

    公开(公告)日：1975-12-23

    申请号：US25232772

    申请日：1972-05-10

    申请人： HORIZONS INC

    发明人： THORNTON J SCOTT ,  GLOWE DONALD E

    IPC分类号： G03C11/24 ,  B08B3/08

    CPC分类号： G03C11/24

    摘要： A procedure for separating and recovering clean polyester separately from the materials with which it is coated and for recovering desired values present in the coating materials, whereby the recovered polyester and other valuable recovered materials may be recycled thereby avoiding, or minimizing pollution from such materials. When the starting material is a polyester photographic film, the treatment includes detaching the contaminants from the polyester film base by contacting the polyester photographic film scrap with an aqueous solution of monoethanolamine containing 2% to 15% by weight of water and having a temperature between 100*C and 170*C, for a time sufficient to remove both the coating and the subcoating from said base.

    摘要翻译： 分离和回收清洁聚酯与其所涂覆的材料分离和回收并用于回收涂料中存在的所需值的方法，由此可回收回收的聚酯和其它有价值的回收材料，从而避免或最小化这些材料的污染。