Packages and containers made from water-soluble polyamides and methods of making the same

Patent Name: Packages and Containers Made of Water-Soluble Polyamides and Methods of Making Same Patent Patent Applicant Nemours DuPont Company Principal Applicant Address Wilmington, Delaware Inventor R.U. Páglaragan Application (patent ) No. 03810103.3 Application date 2003.05.14 Certification date Approval announcement No. 1649942 Approval announcement date 2005.08.03 Specification CD No. D0531 Main classification number C08J5/18 C08J5/18; C08G69/40; C11D17/04 division Original application No. First Item 2002.5.14 US 60/380,380 Abstract discloses a packaging material made from water-soluble nylon, which easily contains materials such as corrosive chemicals and dissolves upon exposure to water to release the chemical To create conditions in the water environment. The packaging material is made from selected polyether diamines and selected aliphatic dicarboxylic acids. Sovereignty Item 1. A packaging material comprising a water-soluble solution obtained by reacting an adipic acid and a molecular weight of 148-396 represented by the following formula with a solubility of at least 1.0 wt% in water at 23C. Polyamides, H2N-R1-O-R2-O-R1-NH2 where R1 and R2 are either -CH2-CH2- or are -CH2-CH2-CH2-; H2N-R1 (-O-CH2-CH2-) XO-R1-NH2 wherein R1 is either -CH2-CH2- or is -CH2-CH2-CH2-, and the average value of X is 2-6. International Application PCT/US2003/015106 2003.5.14 International Publication WO2003/097723 English 2003.11.27 Date of entry into the country Patent agency China Patent Agency (Hong Kong) Co., Ltd. Agency address Agent Liu Yuan; Duan Xiaoling