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    • 2. 发明公开
    • 나노 무기 실리카 입자를 포함하는 폴리에스테르 수지 및그 제조방법
    • 包含纳米无机硅石颗粒的聚酯树脂及其制备方法
    • KR1020050029580A
    • 2005-03-28
    • KR1020030065916
    • 2003-09-23
    • 학교법인 한양학원
    • 임승순함완규
    • C08G63/16B82Y30/00
    • Provided are a polyester resin comprising nano inorganic silica particles and a preparation method thereof. The polyester resin has a reduced rate of crystallization and excellent toughness due to enhanced particle distribution of nano inorganic silica particles. The preparation method through In-situ polymerization comprises the steps of: (a) esterification of dicarboxylates and diols with a catalyst at 170deg.C to 240deg.C and adding nano inorganic silica particles at the beginning of the reaction; and (b) carrying out polycondensation reaction at 240deg.C to 290deg.C by adding catalyst after the completion of esterification reaction. The dicarboxylates are selected from C4-C22 alkyldicarboxylic acids, C8-C22 aryldicarboxylic acids, C10-C18 arylalkyldicarboxylic acids, C6-C24 alkyldicarboxylates, C10-C24 aryldicarboxylates and C12-C20 arylalkyldicarboxylates. The diols are selected from C2-C8 alkyldiols and C4-C12 polyethylene glycols. The polyester resin comprises 0.01wt.%-3.0wt.% of nano inorganic silica particles, based on the weight of final polyester resin. The nano inorganic silica particles have average diameters of 5nm-30nm and specific surface area of 50m2/g-450m2/g. The polyester resin has 2-6 times longer isothermal crystallization time (half crystallization, t1/2) than polyester resins except nano inorganic silica particles.
    • 提供包含纳米无机二氧化硅颗粒的聚酯树脂及其制备方法。 由于纳米无机二氧化硅颗粒的颗粒分布增加,聚酯树脂具有降低的结晶速率和优异的韧性。 通过原位聚合的制备方法包括以下步骤:(a)在170℃至240℃的催化剂下酯化二羧酸酯和二醇,并在反应开始时加入纳米无机二氧化硅颗粒; (b)通过在酯化反应完成后加入催化剂,在240℃〜290℃下进行缩聚反应。 二羧酸酯选自C 4 -C 22烷基二羧酸,C 8 -C 22芳基二羧酸,C 10 -C 18芳基烷基二羧酸,C 6 -C 24烷基二羧酸酯,C 10 -C 24芳基二羧酸酯和C 12 -C 20芳烷基二羧酸酯。 二醇选自C 2 -C 8烷基二醇和C 4 -C 12聚乙二醇。 基于最终聚酯树脂的重量,聚酯树脂包含0.01重量%至3.0重量%的纳米无机二氧化硅颗粒。 纳米无机二氧化硅颗粒的平均直径为5nm-30nm,比表面积为50m2 / g-450m2 / g。 聚酯树脂除了纳米级无机二氧化硅颗粒以外,还具有比聚酯树脂长2-6倍的等温结晶时间(半结晶化,t1 / 2)。
    • 5. 发明公开
    • 생분해성이 우수한 새로운 지방족 폴리에스테르 이오노머수지와 그의 제조방법
    • 具有优异生物降解性的含有离子基团的新型聚酰亚胺离子树脂及其制备方法
    • KR1020040078454A
    • 2004-09-10
    • KR1020030013403
    • 2003-03-04
    • 학교법인 한양학원
    • 임승순김동국유영태한상일
    • C08G64/00
    • C08G63/83C08G63/672C08G63/6886C08G63/85
    • PURPOSE: A novel aliphatic polyester ionomer resin is provided to improve the biodegradability compared to the conventional aliphatic polyester resin by introducing ionic groups that improve hydrophilicity. The aliphatic polyester ionomer resin can suitably substitute the conventional non-biodegradable plastics to reduce the environmental pollution. CONSTITUTION: The aliphatic polyester ionomer resin with excellent biodegradability comprises 41-54wt% of a polyhydric aliphatic or alicyclic glycol, 36-52wt% of an aliphatic polycarboxylic acid or its anhydride and 1-23wt% of alkali metal salts of an aliphatic or aromatic sulfone acid, wherein resin molecules form chemical bonds with alkali metal salts of sulfonic acid. The aliphatic polyester ionomer resin is prepared by: adding polyhydric aliphatic or alicyclic glycol, an aliphatic polycarboxylic acid or its anhydride and alkali metal salts of an aliphatic or aromatic sulfonic acid; carrying out esterification of the resulted mixture; and carrying out polycondensation of the mixture by adding a catalyst for polycondensation at 220-260deg.C.
    • 目的:通过引入提高亲水性的离子基团,提供了一种新型脂族聚酯离聚物树脂,以提高与常规脂肪族聚酯树脂相比的生物降解性。 脂肪族聚酯离聚物树脂可以适当地代替常规的非生物降解塑料来减少环境污染。 构成:具有优异的生物降解性的脂肪族聚酯离聚物树脂包含41-54重量%的多元脂肪族或脂环族二醇,36-52重量%的脂肪族多元羧酸或其酸酐和1-23重量%的脂肪族或芳香族砜的碱金属盐 酸,其中树脂分子与磺酸的碱金属盐形成化学键。 脂肪族聚酯离聚物树脂是通过添加多元脂肪族或脂环族二醇,脂肪族多元羧酸或其酸酐和脂肪族或芳香族磺酸的碱金属盐来制备的; 进行所得混合物的酯化; 并通过在220-260℃下加入缩聚催化剂进行混合物的缩聚。