公开(公告)号：US5059687A

公开(公告)日：1991-10-22

申请号：US507851

申请日：1990-04-12

Applicant: Christiaan Schroder ,  Albert A. Van Geenen ,  Josefina M. A. Schiffer

Inventor： Christiaan Schroder ,  Albert A. Van Geenen ,  Josefina M. A. Schiffer

IPC: C08G69/48 ,  C07D227/087 ,  C08G65/32 ,  C08G65/333 ,  C08G69/14

CPC classification number: C08G65/33327 ,  C07D227/087 ,  C08G69/14

Abstract: A process for the condensation of imides and alcohols or amines to ester acyl lactams, ester amide acyl lactams or amide acyl lactams by reacting a polyol or polyamine in the liquid phase with an acyl lactam compound is disclosed.

公开(公告)号：US5037884A

公开(公告)日：1991-08-06

申请号：US121842

申请日：1987-11-17

Applicant: Ronald M. A. M. Schellekens

Inventor： Ronald M. A. M. Schellekens

IPC: B29C55/00 ,  B29K55/00 ,  C08F16/02 ,  C08F216/06 ,  C08J5/18 ,  C08L29/04 ,  D01D5/00 ,  D01F6/14 ,  D01F6/30 ,  D01F6/34

CPC classification number: D01F6/34 ,  C08J5/18 ,  C08J2329/04

Abstract: The invention relates to an object and a process for the preparation of an object from an ethylene-vinyl alcohol copolymer with high tensile strength and modulus, by converting:a) a solution of an ethylene-vinyl alcohol copolymer with a weight-average molecular weight above 6.times.10.sup.4 kg/Kmole into a shaped, solvent-containing object in a suitable solvent or mixture of solvents;b) converting this object into a gel object with a homogeneous gelstructure by rapid cooling to below the gelation temperature;c) removing the solvent present in this gel object for the most partd) Drawing the gel object during or after solvent removal at a temperature above the glass transition temperature but below the melting temperature of the copolymer.

公开(公告)号：US5035111A

公开(公告)日：1991-07-30

申请号：US251455

申请日：1988-09-30

Applicant: Eric H. M. Hogenboom ,  Peter Bruinink

Inventor： Eric H. M. Hogenboom ,  Peter Bruinink

IPC: D02G3/28 ,  D02G3/22 ,  D02G3/36 ,  D02G3/44

CPC classification number: D02G3/44 ,  D02G3/22 ,  Y10T428/2936

Abstract: The invention relates to combinations of polymer filaments or yarns of high tensile strength, high modulus and low coefficients of friction and filaments or yarns of high coefficients of friction. Combinations of this type, which have been produced in particular by core spinning the filaments or yarns of low coefficient of friction with filaments or yarns of high coefficients of friction or by twisting the two filament or yarn components, are suitable in particular for producing bulletproof wovens, knits and nonwovens.

公开(公告)号：US4923735A

公开(公告)日：1990-05-08

申请号：US292237

申请日：1988-12-30

Applicant: Erik R. Peerlkamp

Inventor： Erik R. Peerlkamp

IPC: H05K1/03

CPC classification number: H05K1/0346 ,  Y10S428/901 ,  Y10T428/24917 ,  Y10T428/31678 ,  Y10T428/31681 ,  Y10T428/31725

Abstract: The invention relates to a thermoplastic moulded printed circuit board consisting substantially of polyamide 4.6. Preferably use is made of a multilayer structure, of which at least one layer contains reinforcing filler material.

公开(公告)号：US4911867A

公开(公告)日：1990-03-27

申请号：US129354

申请日：1987-11-30

Applicant: Rudolf J. H. Burlet ,  Johannes H. H. Raven ,  Pieter J. Lemstra

Inventor： Rudolf J. H. Burlet ,  Johannes H. H. Raven ,  Pieter J. Lemstra

IPC: B32B5/00 ,  C08J5/06 ,  D06M10/00 ,  D06M10/02 ,  D06M101/00 ,  D06M101/16 ,  D06M101/18 ,  D06M101/20 ,  D06M101/22

CPC classification number: D06M10/025 ,  D06M2101/32 ,  D06M2101/34 ,  D06M2200/50

Abstract: The adhesive strength of highly oriented, highmolecular polyolefin filaments for polar polymeric matrices is improved by subjecting the filaments to a corona treatment with a total irradiation dosage of ##EQU1## effected intermittently in several smaller dosages. The process is particularly suited for treating superstrong polyethylene fibers, and making reinforced materials while applying as matrix a polyester, polyamide or epoxy resin.

Abstract translation: 通过以几种较小剂量间歇地进行总辐射剂量“IMAGE”的长丝进行电晕处理，改进了极性聚合物基质的高取向，高分子量聚烯烃长丝的粘合强度。 该方法特别适用于处理超强度聚乙烯纤维，并在作为基体施用聚酯，聚酰胺或环氧树脂时制成增强材料。

公开(公告)号：US4876327A

公开(公告)日：1989-10-24

申请号：US192626

申请日：1988-05-11

Applicant: Bindert K. Vriesema ,  Francesco Miniaci

Inventor： Bindert K. Vriesema ,  Francesco Miniaci

IPC: C08G63/60 ,  C08G63/66 ,  C08G63/68 ,  D01F6/82 ,  D01F6/84

CPC classification number: C08G63/605 ,  C08G63/181 ,  C08G69/44

Abstract: The invention relates to aromatic polyesters containing units with two carbonyl groups and having liquid crystalline properties. The aromatic polyesters are characterized in that the polyesters contain heterocyclic units with two carbonyl groups. Preferably these units are derived from furandicarboxylic acid. The aromatic polyesters show a considerable reduction in melting temperature, rendering the polyester more processable.

公开(公告)号：US4876301A

公开(公告)日：1989-10-24

申请号：US103367

申请日：1987-10-01

Applicant: Erik R. Peerlkamp ,  Pieter Gijsman

Inventor： Erik R. Peerlkamp ,  Pieter Gijsman

IPC: C08L77/00 ,  C08K3/22 ,  C08K3/26

CPC classification number: C08K3/22 ,  C08K3/26

Abstract: The invention relates to a polyamide composition with improved stability in contact with oil at elevated temperatures. The polyamide composition with superior stability characteristics has been obtained by the incorporation in the polyamide composition of a small amount of an alkaline inorganic material. Preferably the polyamide is nylon 4.6.

公开(公告)号：USD303672S

公开(公告)日：1989-09-26

申请号：US898671

申请日：1986-08-21

Applicant: Johannes A. Stienen

Designer： Johannes A. Stienen

公开(公告)号：US4853282A

公开(公告)日：1989-08-01

申请号：US131085

申请日：1987-12-10

Applicant: Erik R. Peerlkamp

Inventor： Erik R. Peerlkamp

IPC: B32B27/18 ,  B32B27/20 ,  B32B27/34

CPC classification number: B32B27/20 ,  B32B27/34 ,  Y10T428/25 ,  Y10T428/251 ,  Y10T428/31732 ,  Y10T428/31739

Abstract: A multi-layer polyamide moulded articles having, inter alia, improving mechanical properties, one layer of which is reinforced with filler and covered at least on one side with a non-reinforced polyamide layer and of which the polyamide substantially consists of nylon 4,6 and the filler is non-fibrous.

公开(公告)号：US4847412A

公开(公告)日：1989-07-11

申请号：US850157

申请日：1986-04-10

Applicant: Wilhelmus H. J. Boesten ,  Hans E. Schoemaker ,  Bernardus H. N. Dassen

Inventor： Wilhelmus H. J. Boesten ,  Hans E. Schoemaker ,  Bernardus H. N. Dassen

IPC: C07B55/00 ,  C07B31/00 ,  C07C67/00 ,  C07C231/00 ,  C07C231/12 ,  C07C231/16 ,  C07C237/06 ,  C07C241/00 ,  C07C251/02 ,  C12P13/04 ,  C12P13/08 ,  C12P41/00

CPC classification number: C12P13/04 ,  C12P13/08 ,  C12P41/007

Abstract: The invention relates to a process for racemizing an optically active N-benzylidene amino-acid amide, characterized in that a solution of the N-benzylidene amino-acid amide is mixed in a water-miscible organic solvent with at least 0.05 mole strong base per liter solution.The invention further relates to a process for preparing an L-amino acid by enzymatic separation of the corresponding DL-amino-acid amide with an enzyme preparation from Pseudomonas putida, in which process also unconverted D-amino-acid amide is left behind in solution, characterized in that benzaldehyde is added to the solution, during which addition a precipitate of D-N-benzylidene amino-acid amide is being formed, this precipitate is subsequently, after being separated off, dissolved in an acetone-water mixture, 0.08-0.15 mole KOH/liter solution is subsequently added, the resulting solution is stirred for 1-20 hours at 20.degree.-60.degree. C., sulphuric acid is then added until the pH of the solution is 5 and the resulting sulphuric acid salt of the DL-amino-acid amide is finally, after isolation at pH 8-10, converted into the DL-amino-acid amide and this DL-amino-acid amide is used again.

Abstract translation: 本发明涉及一种使光学活性的N-亚苄基氨基酸酰胺外消旋化的方法，其特征在于将N-亚苄基氨基酸酰胺的溶液与水混溶的有机溶剂混合至少0.05摩尔强碱 升解决方案。 本发明还涉及通过用恶臭假单胞菌（Pseudomonas putida）的酶制剂酶分离相应的DL-氨基酸酰胺来制备L-氨基酸的方法，其中将未转化的D-氨基酸酰胺留在溶液中 其特征在于向溶液中加入苯甲醛，在此期间加入了DN-亚苄基氨基酸酰胺的沉淀物，然后将该沉淀物分离后溶解在丙酮 - 水混合物中，0.08-0.15摩尔 随后加入KOH /升溶液，所得溶液在20-60℃下搅拌1-20小时，然后加入硫酸直到溶液的pH为5，得到的DL- 氨基酸酰胺最后在pH8-10分离后，转化成DL-氨基酸酰胺，再次使用该DL-氨基酸酰胺。