公开(公告)号：US20160032492A1

公开(公告)日：2016-02-04

申请号：US14804439

申请日：2015-07-21

Applicant: E I DU PONT DE NEMOURS AND COMPANY

Inventor： MEHDI AFSHARI ,  WALTER RANDALL HALL III

IPC: D01D5/06 ,  D02G3/02 ,  D01F6/60 ,  D01D10/06

CPC classification number: D01D5/06 ,  D01D10/02 ,  D01D10/06 ,  D01F6/605 ,  D02G3/02 ,  D10B2331/021

Abstract: The invention relates to a continuous process for making a yarn comprising filaments of poly (paraphenylene terephthalamide) and the yarn made thereby, the process utilizing a coagulation bath having a temperature of at least 20° C., washing with an aqueous liquid, and drying the filaments under a tension of 0.3 to 1.0 grams per denier wherein the filaments are dried for 0.4 to 0.9 seconds at a temperature of from 250 to 325° C. The yarn has a tenacity of at least 22 gpd, an elongation at break of at least 3.2 percent, and a tensile modulus of from 530 to 700 gpd; the yarn further has a heat-aged strength retention (HASR) of at least 93 percent and the filaments in the yarn have a D110 crystallinity of at least 55 angstroms.

Abstract translation: 本发明涉及一种用于制造包含聚（对苯二甲酰对苯二胺）长丝和由此制成的纱线的纱线的连续方法，该方法利用温度为至少20℃的凝固浴，用水性液体洗涤和干燥 长丝在0.3至1.0克/旦尼尔的张力下，其中长丝在250至325℃的温度下干燥0.4至0.9秒。该纱线具有至少22gpd的强度，断裂伸长率在 至少3.2％，拉伸模量为530至700gpd; 该纱线还具有至少93％的热老化强度保持（HASR），并且纱线中的长丝具有至少55埃的D110结晶度。

公开(公告)号：US20190127918A1

公开(公告)日：2019-05-02

申请号：US16166296

申请日：2018-10-22

Applicant: E I DU PONT DE NEMOURS AND COMPANY

Inventor： MEHDI AFSHARI

IPC: D21H27/00 ,  D21H13/26 ,  D21H15/10 ,  D21H19/12 ,  D21H23/04 ,  D21H19/24 ,  D21H23/66 ,  D21H19/84 ,  D21H21/14 ,  D21H17/68 ,  D21H17/67

CPC classification number: D21H27/00 ,  D21H13/26 ,  D21H15/10 ,  D21H17/34 ,  D21H17/67 ,  D21H17/675 ,  D21H17/68 ,  D21H19/12 ,  D21H19/24 ,  D21H19/84 ,  D21H21/14 ,  D21H23/04 ,  D21H23/66 ,  F16D69/026 ,  F16D2200/0095

Abstract: A paper comprises from 60 to 99 weight percent of a aramid fibrous pulp and from 1 to 40 weight percent of a polyvinylpyrrolidone coating on the fiber surface, the coating being neither chemically nor electrostatically bound to the fibers. A friction paper composite comprising the paper and a resin coating is also described.

公开(公告)号：US20180119335A1

公开(公告)日：2018-05-03

申请号：US15700240

申请日：2017-09-11

Applicant: E I DU PONT DE NEMOURS AND COMPANY

Inventor： MEHDI AFSHARI

IPC: D06M15/564 ,  D06M15/693 ,  D02G3/36 ,  D02G3/44 ,  A41D31/00

CPC classification number: D06M15/564 ,  A41D19/01505 ,  A41D31/245 ,  D02G3/36 ,  D02G3/442 ,  D06M15/59 ,  D06M15/693 ,  D06M23/08 ,  D06M2101/16 ,  D06M2101/32 ,  D06M2101/34 ,  D06N3/0068 ,  D06N3/045 ,  D06N3/10 ,  D06N3/14

Abstract: A fabric comprising a cut-resistant polymeric coating including by weight 1 to 10 percent para-aramid particles, the particles having an average particle size of 20 to 500 microns.

公开(公告)号：US20150064438A1

公开(公告)日：2015-03-05

申请号：US14467098

申请日：2014-08-25

Applicant: E I DU PONT DE NEMOURS AND COMPANY

Inventor： MONTY C. MCNEIL ,  MEHDI AFSHARI

IPC: D07B1/16 ,  B05D3/00 ,  D07B1/06

CPC classification number: D07B1/162 ,  B05D3/002 ,  B05D2256/00 ,  B29C70/20 ,  B29D29/06 ,  B29D30/38 ,  B29D2030/381 ,  B29L2030/003 ,  B60C9/005 ,  D07B1/0653 ,  D07B1/165 ,  D07B2205/2003 ,  D07B2205/201 ,  D07B2205/2039 ,  D07B2205/2046 ,  D07B2205/205 ,  D07B2205/3021 ,  D07B2501/2046 ,  D07B2501/2076 ,  Y10T428/249921

Abstract: A cord suitable for use in a tire or belt comprises a plurality of polymeric yarns or metallic strands wherein the yarns or strands are aligned parallel to each other to form a planar array, the yarns or strands being encapsulated by a solvent-free non-filamentary polymeric or rubber sheath, the yarns or strands have a tenacity of at least 3 grams per dtex and a modulus of at least 200 grams per dtex, and the ratio of the width of the encapsulated planar array to the thickness of the array is at least 2 to 1.

Abstract translation: 适用于轮胎或皮带的绳索包括多根聚合纱线或金属丝线，其中纱线或股线彼此平行排列以形成平面阵列，纱线或股线被无溶剂的非丝状 聚合物或橡胶护套，纱线或股线具有至少3克/分特性的强度和至少200克/分特的模量，并且封装的平面阵列的宽度与阵列的厚度之比至少为 2到1。