Cross-linking Reaction of Polyethylene

1. Department of Chemical and Materials Engineering , National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan, R.O.C. Cross-linking Reaction of Polyethylene Wang Wei - Shiang , 王韋翔 技術簡介 發泡技術乃是利用物理發泡或化學交聯發泡使塑膠材料發泡（開孔或閉孔型）達到輕量、緩衝、吸音、吸震、保溫、過濾、包裝等功能之技術。產品不只具有上述的 特殊功能，而且可以因為發泡降低比重達到降低成本的目的，所以，發泡產品不只廣泛的應用於民生用品上(如鞋材、水上運動器材、緩衝墊等)，建材(空調保溫管、地板、踢腳板等)與工業用途上(如包裝、保溫、防震、過濾等)也都有需求。 搜尋關鍵字 Polyethylene and Cross-linked 搜尋流程 首先前往 美國專利局網站( http://www.uspto.gov ) 點選 ( How To Search ) 點選 ( Search patents ) AppFT: Patent Applications PATFT: Issued Patents Quick Search Advanced Search Patent Number Search (34303)Iss (1955)Iss All Fields Claim(s) Abstract Title (252)Iss (37)Iss PAT. NO. Inventor Company Filing Day Title Issued Day Crosslinkedpolyethylene pipe having a high density polyethylene liner (Issued Patents) Backman; Arthur L. (Broadview Heights, OH), Dalal; Girish T. (Avon Lake, OH), Mahabir; Carl M. (Streetsboro, OH) Noveon IP Holdings Corp. (Cleveland, OH) ) July 10, 2003 August 8, 2006 7,086,421 Crosslinking of polyethylene for low wear using radiation and thermal treatments Orthopaedic Hospital (Los Angeles, CA) University of Southern California (Los Angeles, CA) 6,800,670 Shen; Fu-Wen (Walnut, CA), McKellop; Harry A. (Los Angeles, CA), Salovey; Ronald (Rancho Palos Verdes, CA) February 26, 2001 October 5, 2004 High density polyethylene films with improved barrier properties Eastman Chemical Company (Kingsport, TN) Klosiewicz; Daniel W. (Wilmington, DE) June 5, 1998 August 13, 2002 6,432,496 首先前往 中華民國專利資訊檢索系統( http://twpat1.tipo.gov.tw) 點選 ( 專利檢索) 輸入關鍵字查詢 查詢結果 列在Word及Excel表格內 申請案號 發明人 申請人 申請日 公告日 名稱 西川茂雄 SHIGEO NISHIKAWA有本昌司 MASASHI ARIMOTO江里口真男 MICHIO ERIGUCHI 超高分子量聚乙烯發泡體及其製造方法與用途 三井化學股份有限公司 MITSUI CHEMICALS, INC. 2004 10月08日 2008 01月21日 093130535

2. 搜尋重要結果 7,086,421- (Issued Patents) A multilayer PEX pipe having improved resistance to oxidizing agents in water. The pipe has a thin tubular core (inner layer) of high density polyethylene and an outer layer of crosslinked polyethylene. The pipe may optionally have an oxygen barrier layer, such as poly(ethylene-co-vinyl alcohol) ("EVOH"), contiguously disposed radially outward from the PEX layer. The pipe is suitable for potable water applications and for hot water radiant heating systems. 6,800,670- (Issued Patents) The present invention discloses methods for enhancing the wear-resistance of polymers, the resulting polymers, and in vivo implants made from such polymers. One aspect of this invention presents a method whereby a polymer is irradiated, preferably with gamma radiation, then thermally treated, such as by remelting of annealing. The resulting polymeric composition preferably has its most oxidized surface layer removed. Another aspect of the invention presents a general method for optimizing the wear resistance and desirable physical and/or chemical properties of a polymer by crosslinking and thermally treating it. The resulting polymeric compositions is wear-resistant and may be fabricated into an in vivo implant. 。 6,432,496- (Issued Patents) This invention relates High Density Polyethylene (HDPE) films having improved barrier properties. More particularly, the invention relates to HDPE films containing hydrocarbon resins having improved moisture barrier. The invention also relates to masterbatches for use in producing High Density Polyethylene films having improved barrier properties. 心得與應用 從專利佈局中，讓我瞭解到原來我的研究領域，有非常多的應用，例如材料的組成物、管線材料、及保溫的材料等等，由此可知，我所研究的材料是相當熱門而且應用廣泛的。而且從專利佈局中也讓我瞭解到研發這些材料的熱門公司及重要發明人，對我以後找工作也會有極大的幫助。 ACKNOWLEDGMENT 王怡仁老師、王美心 老師。