公开(公告)号：US20240092719A1

公开(公告)日：2024-03-21

申请号：US18484171

申请日：2023-10-10

Applicant: Apeel Technology, Inc.

Inventor： Ronald C. Bakus, II ,  Alena Higgins ,  David Fisher ,  Charles Frazier ,  Louis Perez ,  Gabriel Rodriguez

IPC: C07C51/353 ,  C07D201/12 ,  C08J11/10 ,  C08J11/16 ,  C11C1/02

CPC classification number: C07C51/353 ,  C07D201/12 ,  C08J11/10 ,  C08J11/16 ,  C11C1/02

Abstract: Described herein are methods of preparing compounds derived from triglycerides or condensation polymers such as polyesters and/or polyamides. The methods may include subjecting triglyceride or condensation polymer containing matter to mechanical processing in the presence of a nucleophile.

公开(公告)号：US6087494A

公开(公告)日：2000-07-11

申请号：US69204

申请日：1998-04-29

Applicant: Petrus J. H. Thomissen

Inventor： Petrus J. H. Thomissen

IPC: C08F8/50 ,  C07D201/12 ,  C08J11/14 ,  C08J11/16

CPC classification number: C07D201/12

Abstract: Process for the depolymerization of one or more polyamides into its monomeric components in the presence of water by means of at least one alkali metal compound, at least one alkaline-earth metal compound or a combination thereof. The depolymerization takes place at a pressure of between 0.2 and 2.0 MPa, so that high conversions are achieved and the depolymerization reaction proceeds faster, even in the presence of a high content of cyclic oligomers.

Abstract translation: 通过至少一种碱金属化合物，至少一种碱土金属化合物或其组合，在水存在下将一种或多种聚酰胺解聚成其单体成分的方法。 在0.2-2.0MPa的压力下进行解聚，从而即使在高含量的环状低聚物的存在下也能实现高转化率并且解聚反应进行得更快。

公开(公告)号：US5869654A

公开(公告)日：1999-02-09

申请号：US844539

申请日：1997-04-18

Applicant: Stylianos Sifniades ,  Alan Bart Levy

Inventor： Stylianos Sifniades ,  Alan Bart Levy

IPC: C07D201/12 ,  C07D201/16

CPC classification number: C07D201/16 ,  C07D201/12

Abstract: The present invention provides an improved process for the recovery of caprolactam from polycaprolactam processing waste. The present process for depolymerizing polycaprolactam waste to form caprolactam comprises the step of: in the absence of added catalyst, contacting the polycaprolactam waste with superheated steam at a temperature of about 250.degree. C. to about 400.degree. C. and at a pressure within the range of about 1.5 atm to about 100 atm and substantially less than the saturated vapor pressure of water at the temperature wherein a caprolactam-containing vapor stream is formed.The formed caprolactam may then be used in the production of engineered resins and fibers.

Abstract translation: 本发明提供了从聚己内酰胺处理废物中回收己内酰胺的改进方法。 用于解聚聚己内酰胺废物形成己内酰胺的本发明方法包括以下步骤：在不加入催化剂的情况下，在约250℃至约400℃的温度和 范围为约1.5atm至约100atm，并且在其中形成含己内酰胺的蒸汽流的温度下，基本上小于饱和的水蒸气压。 然后，所形成的己内酰胺可以用于工程化树脂和纤维的生产。

公开(公告)号：US5700358A

公开(公告)日：1997-12-23

申请号：US396623

申请日：1995-03-01

Applicant: Hugo Fuchs ,  Josef Ritz ,  Gerald Neubauer

Inventor： Hugo Fuchs ,  Josef Ritz ,  Gerald Neubauer

IPC: C07D201/12 ,  C07D201/16 ,  C08G69/14 ,  C08G69/46 ,  B01D3/34

CPC classification number: C07D201/12 ,  C07D201/16

Abstract: Caprolactam is recovered from oligomers and/or polymers of caprolactam by cleavage of oligomers and/or polymers of caprolactam and subsequent working up by distillation of the caprolactam obtained in the cleavage, by a process including (a) cleaving oligomers and/or polymers of caprolactam to obtain an aqueous reaction mixture which contains caprolactam, (b) removing water from the reaction mixture obtained under (a) to obtain a residue, (c) distilling the residue obtained under (b) in an acidic medium and (d) then distilling the distillate in an alkaline medium to obtain caprolactam, or (c') distilling the residue obtained under (b) in an alkaline medium and (d') then distilling the distillate in an acidic medium to obtain caprolactam.

Abstract translation: 通过裂解己内酰胺的低聚物和/或聚己内酯并随后通过蒸馏在切割中获得的己内酰胺来处理己内酰胺从己内酰胺的低聚物和/或聚合物中回收己内酰胺，方法包括（a）裂解己内酰胺的低聚物和/或聚合物 得到含有己内酰胺的水性反应混合物，（b）从（a）得到的反应混合物中除去水，得到残渣，（c）将酸性介质中的（b）得到的残渣蒸馏，然后蒸馏 在碱性介质中的馏出物得到己内酰胺，或（c'）将在（b）获得的残余物在碱性介质中蒸馏，然后（d'），然后在酸性介质中蒸馏出馏出物，得到己内酰胺。

公开(公告)号：US5656757A

公开(公告)日：1997-08-12

申请号：US511334

申请日：1995-08-10

Applicant: Theodore John Jenczewski ,  Lamberto Crescentini ,  Richard Eugene Mayer

Inventor： Theodore John Jenczewski ,  Lamberto Crescentini ,  Richard Eugene Mayer

IPC: C07D201/12

CPC classification number: C07D201/12

Abstract: A process for recovering monomer from multi-component waste material that includes a hydrolyzable polymer, includes contacting the multi-component waste material with water and subjecting the resulting mixture to heat and pressure to form a liquid aqueous portion and a water insoluble portion. The liquid aqueous portion mainly includes depolymerization products of the hydrolyzable polymer, and the water insoluble portion mainly includes components other than the depolymerization products. This mixture is cooled and the liquid aqueous portion and the water insoluble portion are separated. Monomer that formed the hydrolyzable polymer is recovered from the liquid aqueous solution.

Abstract translation: 一种从包含可水解聚合物的多组分废料中回收单体的方法，包括使多组分废料与水接触并对所得混合物进行加热和加压以形成液体水性部分和水不溶性部分。 液体水性部分主要包括可水解聚合物的解聚产物，水不溶性部分主要包括解聚产物以外的成分。 将该混合物冷却，分离液体水性部分和水不溶性部分。 形成可水解聚合物的单体从液体水溶液中回收。

公开(公告)号：US5495014A

公开(公告)日：1996-02-27

申请号：US358412

申请日：1994-12-19

Applicant: Eberhard Fuchs ,  Tom Witzel

Inventor： Eberhard Fuchs ,  Tom Witzel

IPC: C07D201/12

CPC classification number: C07D201/12

Abstract: Caprolactam is prepared by cleaving oligomers or polymers containing essentially the repeating unit --[--N(H)-(CH.sub.2).sub.5 --C(O)--]- in the presence of a catalyst at elevated temperatures by a process in which the cleavage is carried out in the liquid phase in the presence of a heterogeneous catalyst and of an organic solvent.

Abstract translation: 己内酰胺通过在催化剂存在下在升高的温度下裂解基本上含有重复单元 - [ - N（H） - （CH 2）5 -C（O） - ] - 的低聚物或聚合物来制备， 在非均相催化剂和有机溶剂的存在下在液相中进行。

公开(公告)号：US5457197A

公开(公告)日：1995-10-10

申请号：US225273

申请日：1994-04-08

Applicant: Stylianos Sifniades ,  Alan B. Levy

Inventor： Stylianos Sifniades ,  Alan B. Levy

IPC: C07D201/12

CPC classification number: C07D201/12

Abstract: A process for recovering monomer from multi-component waste material that includes a hydrolyzable polymer, the process including contacting the multi-component waste material with water and subjecting the resulting mixture to heat and pressure to form a liquid aqueous portion which mainly includes depolymerization products of the hydrolyzable polymer and a water insoluble portion which mainly includes components other than the depolymerization products; separating the liquid aqueous portion and the water insoluble portion; subjecting the separated aqueous portion to a pressure that is lower than that of step (a) and heat to produce a residue and a distillate which contains monomer; and separating the monomer in the distillate from other components in the distillate. The process is particularly useful for recovering caprolactam from waste materials that include nylon 6.

Abstract translation: 一种从包含可水解聚合物的多组分废料中回收单体的方法，该方法包括使多组分废料与水接触并使所得混合物进行加热和加压以形成液体水性部分，其主要包括： 可水解聚合物和水不溶部分，其主要包括解聚产物以外的成分; 分离液体水性部分和水不溶部分; 将分离的水分部分的压力低于步骤（a）的压力，加热以产生残余物和含有单体的馏出物; 并将馏出物中的单体与馏出物中的其它组分分离。 该方法对于从包括尼龙6的废料回收己内酰胺是特别有用的。

公开(公告)号：US5310905A

公开(公告)日：1994-05-10

申请号：US45780

申请日：1993-04-14

Applicant: Edward F. Moran, Jr.

Inventor： Edward F. Moran, Jr.

IPC: C07C51/347 ,  C07C55/14 ,  C07D201/12

CPC classification number: C07D201/12 ,  C07C51/347 ,  C07C55/14

Abstract: Waste nylon 6 and/or nylon 6,6 are treated with aliphatic monocarboxylic acid to depolymerize the polymer to desirable monomer.

Abstract translation: 将废尼龙6和/或尼龙6,6用脂肪族单羧酸处理以将聚合物解聚为所需的单体。

公开(公告)号：US5216149A

公开(公告)日：1993-06-01

申请号：US711546

申请日：1991-06-07

Applicant: Robert J. Evans ,  Helena L. Chum

Inventor： Robert J. Evans ,  Helena L. Chum

IPC: C07D201/12 ,  C08F2/00 ,  C08J11/12 ,  C10G1/02 ,  C10G1/08 ,  C10G1/10

CPC classification number: C10G1/086 ,  C10G1/02 ,  C10G1/10

Abstract: A process of using fast pyrolysis in a carrier gas to convert a plastic waste feedstream having a mixed polymeric composition in a manner such that pyrolysis of a given polymer to its high value monomeric constituent occurs prior to pyrolysis of other plastic components therein comprising: selecting a first temperature program range to cause pyrolysis of said given polymer to its high value monomeric constituent prior to a temperature range that causes pyrolysis of other plastic components; selecting a catalyst and support for treating said feed streams with said catalyst to effect acid or base catalyzed reaction pathways to maximize yield or enhance separation of said high value monomeric constituent in said temperature program range; differentially heating said feed stream at a heat rate within the first temperature program range to provide differential pyrolysis for selective recovery of optimum quantities of the high value monomeric constituent prior to pyrolysis of other plastic components; separating the high value monomeric constituents; selecting a second higher temperature range to cause pyrolysis of a different high value monomeric constituent of said plastic waste and differentially heating the feedstream at the higher temperature program range to cause pyrolysis of the different high value monomeric constituent; and separating the different high value monomeric constituent.

Abstract translation: 在载气中使用快速热解以转化具有混合聚合物组合物的塑料废料进料流的方法，使得给定聚合物在其高价值单体组分的热解之前发生在其中的其它塑料组分的热解之前，其中包括：选择 第一温度程序范围，以使所述给定的聚合物在导致其它塑料组分的热解的温度范围之前被热分解成其高价值的单体组分; 选择催化剂和用所述催化剂处理所述进料流的载体以实现酸或碱催化的反应途径，以使得所述高价值单体组分在所述温度程序范围内产率最大化或增强分离; 在第一温度程序范围内的热速率差异加热所述进料流，以提供差别热解，以在其它塑料组分的热解之前选择性回收最佳量的高价值单体组分; 分离高价值的单体成分; 选择第二较高温度范围以引起所述塑料废料的不同高价值单体组分的热解，并在较高温度程序范围内差异加热进料流，以引起不同高价值单体组分的热解; 并分离不同的高价值单体成分。

公开(公告)号：US4582642A

公开(公告)日：1986-04-15

申请号：US625143

申请日：1984-06-27

Applicant: Lamberto Crescentini ,  William B. Fisher ,  Richard E. Mayer ,  Joseph D. DeCaprio ,  Ronald K. Nilsen

Inventor： Lamberto Crescentini ,  William B. Fisher ,  Richard E. Mayer ,  Joseph D. DeCaprio ,  Ronald K. Nilsen

IPC: C07D201/16 ,  C07D201/12

CPC classification number: C07D201/16

Abstract: This invention is a method to recover caprolactam from a combined stream of mother liquor from a caprolactam crystallizer and other lactam containing aqueous streams, the improvement comprising steam distilling the combined stream at a temperature of from between about 180.degree. C. to 235.degree. C. in the absence of any depolymerization agent such as phosphoric acid; so that the residue from the steam distilling remains fluid; relatively low levels of caprolactam remain in the residue; less residue is generated; the recovered caprolactam has improved high quality; and losses of caprolactam due to side reactions are reduced.

Abstract translation: 本发明是从己内酰胺结晶器和其它含内含物含水流的母液的合并流中回收己内酰胺的方法，其改进包括在约180℃至235℃的温度下蒸馏合并的流。 在没有任何解聚剂如磷酸的情况下; 使蒸汽蒸馏残渣保持流体; 残余物中残留的己内酰胺水平相对较低; 产生较少的残留物; 回收的己内酰胺具有改善的高品质; 并且由于副反应而导致己内酰胺的损失降低。