Resin composition of good long-run workability comprising ethylene-vinyl alcohol copolymer

    公开(公告)号:US20050096419A1

    公开(公告)日:2005-05-05

    申请号:US11000172

    申请日:2004-12-01

    摘要: Disclosed are a resin composition comprising an ethylene-vinyl alcohol copolymer and a multi-layered structure comprising the resin composition. The resin composition comprises an ethylene-vinyl alcohol copolymer, and is characterized in that, when it is heated in a nitrogen atmosphere at 220° C., its MFR (at 230° C. under a load of 10.9 kg) shows a minimum value within 10 hours after the start of heating it, and shows a maximum value (MFRmax) within 100 hours after showing its minimum value, that it contains from 0.05 to 4 μmols/g of a carboxylic acid (A), and that it satisfies the following formulae (1) and (2): 0.5≦MFRmax/MFR0≦45   (1) 0.1≦(a1)/(A)≦1.0   (2) wherein MFRmax indicates the maximum value of MFR (at 230° C. under a load of 10.9 kg) of the resin composition heated in a nitrogen atmosphere at 220° C.; MFR0 indicates MFR (at 230° C under a load of 10.9 kg) of the resin composition not heated; (A) indicates the total content (μmol/g) of the carboxylic acid (A) and its salt in the resin composition; (a1) indicates the content (μmol/g) of a carboxylic acid (a1) having a molecular weight of at least 75 and its salt in the resin composition. The resin composition has good interlayer adhesiveness when fabricated into laminates, and its moldings are yellowed little and have good appearances with few fish eyes (gels or hard spots) and streaks. While molded in melt, the resin composition ensures good long-run workability not smelling so much, and when recycled, it is yellowed little.

    Resin composition comprising ethylene-vinyl alcohol copolymer with good interlayer adhesiveness
    4.
    发明授权
    Resin composition comprising ethylene-vinyl alcohol copolymer with good interlayer adhesiveness 有权
    包含具有良好层间粘合性的乙烯 - 乙烯醇共聚物的树脂组合物

    公开(公告)号:US06485842B1

    公开(公告)日:2002-11-26

    申请号:US09612455

    申请日:2000-07-07

    IPC分类号: B32B2718

    摘要: Disclosed are a resin composition comprising an ethylene-vinyl alcohol copolymer and a multi-layered structure comprising the resin composition. The resin composition comprises an ethylene-vinyl alcohol copolymer which contains from 500 to 2000 ppm, in terms of the metal, of an alkali metal salt (A) and from 0.05 to 4.5 &mgr;mols/g of a carboxylic acid (B), where the ratio of the content (&mgr;mol/g) of a carboxylic acid (b1) having a molecular weight of at least 75 and its salt to the total content (&mgr;mol/g) of the carboxylic acid (B) and its salt is at least 0.1; or comprises an ethylene-vinyl alcohol copolymer which contains from 500 to 2000 ppm, in terms of the metal, of an alkali metal salt (A), from 10 to 500 ppm of a carboxylic acid (b2) having a molecular weight of smaller than 75, and from 10 to 500 ppm, in terms of the phosphate radical, of a phosphate compound (C). The resin composition has extremely good adhesiveness, and its moldings have good appearances with few gels and fish eyes. When molded, the resin composition ensures good long-run workability and recyclability, and the recycled resin composition is yellowed little.

    摘要翻译: 公开了包含乙烯 - 乙烯醇共聚物和包含树脂组合物的多层结构的树脂组合物。 该树脂组合物包含乙烯 - 乙烯醇共聚物,其以金属计为500至2000ppm的碱金属盐(A)和0.05至4.5摩尔/ g的羧酸(B),其中 分子量至少为75的羧酸(b1)和其盐与羧酸(B)及其盐的总含量(mumol / g)的含量(mumol / g)的比例为至少0.1 ; 或包含乙烯 - 乙烯醇共聚物,其以金属计,含有500〜2000ppm的碱金属盐(A),10〜500ppm的分子量小于(ppm)的羧酸(b2) 75,10-500ppm磷酸化合物(C)的磷酸根。 树脂组合物具有非常好的粘合性,并且其模制品具有良好的外观,少量凝胶和鱼眼。 当模塑时,树脂组合物确保良好的长期加工性和可再循环性,并且再循环的树脂组合物变黄。

    Aqueous emulsion and method for producing it
    5.
    发明授权
    Aqueous emulsion and method for producing it 失效
    水乳液及其制造方法

    公开(公告)号:US06451898B1

    公开(公告)日:2002-09-17

    申请号:US09666467

    申请日:2000-09-20

    IPC分类号: C08F222

    CPC分类号: C08F18/04

    摘要: Provided is an aqueous emulsion comprising, as the dispersant, a polyvinyl alcohol containing from 1 to 15 mol % of ethylene units in the molecule and having a degree of hydrolysis of at least 95 mol %; and, as the dispersoid, a vinyl ester polymer. The aqueous emulsion is characterized in that, when its film is immersed in water at 20° C. for 24 hours, the degree of water solubility of the film is at most 1.5%, and the degree of water absorption of the film is at most 30%, and that the ratio of the emulsion viscosity at 60° C. (T60° C.) to the emulsion viscosity at 20° C. (T20° C.) T60° C./T20° C. is at most 2. The aqueous emulsion has good high-temperature viscosity stability (that is, this depends little on ambient temperatures and has good high-temperature storage stability), and has improved water resistance and improved low-temperature storage stability.

    摘要翻译: 本发明提供一种水性乳液,其包含作为分散剂的分子中含有1〜15摩尔%的乙烯单元并且水解度为至少95摩尔%的聚乙烯醇; 和作为分散质的乙烯基酯聚合物。 该水性乳液的特征在于,当其膜在20℃的水中浸渍24小时时,膜的水溶性度为1.5%以下,膜的吸水度最多为 30%,60℃下的乳液粘度(T60℃)与20℃下的乳液粘度(T20℃)T60℃/ T20℃的比例为2以下 该水性乳液具有良好的高温粘度稳定性(即,这几乎不依赖于环境温度,具有良好的高温保存稳定性),并且具有改善的耐水性和改善的低温储存稳定性。

    Dispersion stabilizer for suspension polymerization of vinyl compound
    6.
    发明授权
    Dispersion stabilizer for suspension polymerization of vinyl compound 有权
    乙烯基化合物悬浮聚合分散稳定剂

    公开(公告)号:US06806305B2

    公开(公告)日:2004-10-19

    申请号:US10265222

    申请日:2002-10-07

    IPC分类号: C08L904

    CPC分类号: C08F2/20

    摘要: A dispersion stabilizer for suspension polymerization of a vinyl compound contains a modified saponified vinyl ester copolymer (A) having an ethylene content of 1 to 20 mol %, a degree of saponification of 90 mol % or more and a degree of polymerization of 100 to 3,000, a saponified vinyl ester polymer (B) having a degree of saponification of 60 to 90 mol % and a degree of polymerization of 600 to 4,000, and a saponified vinyl ester polymer (C) having a degree of saponification of 30 to 60 mol % and a degree of polymerization of 100 to 600, and in which a component (A)/{component (B)+component (C)} weight ratio if 5/95 to 40/60. The dispersion stabilizer for suspension polymerization of the vinyl compound exhibits quite excellent suspension polymerization stability. Further, the suspension polymerization of a vinyl compound using this dispersion stabilizer can produce a resin having a high bulk density minimizes the formation of milky turbid waste water.

    摘要翻译: 乙烯基化合物的悬浮聚合用分散稳定剂含有乙烯含量为1〜20摩尔%,皂化度为90摩尔%以上且聚合度为100〜3000的改性皂化乙烯基酯共聚物(A) ,皂化度为60〜90摩尔%,聚合度为600〜4000的皂化乙烯基酯系聚合物(B)和皂化度为30〜60摩尔%的皂化乙烯基酯系聚合物(C) 聚合度为100〜600,成分(A)/成分(B)+成分(C)}的重量比为5/95〜40/60。 乙烯基化合物的悬浮聚合用分散稳定剂表现出非常优异的悬浮聚合稳定性。 此外,使用该分散稳定剂的乙烯基化合物的悬浮聚合可以生产具有高堆积密度的树脂使乳状混浊废水的形成最小化。

    Aqueous emulsion and dispersant for suspension polymerization of vinyl compounds
    7.
    发明授权
    Aqueous emulsion and dispersant for suspension polymerization of vinyl compounds 有权
    水性乳液和乙烯基化合物悬浮聚合分散剂

    公开(公告)号:US06495623B1

    公开(公告)日:2002-12-17

    申请号:US09889579

    申请日:2001-07-31

    IPC分类号: C08L1302

    摘要: A polyvinyl alcohol having at least 1.9 mol % of 1,2-glycol bonds is used as a dispersant for emulsion polymerization or a dispersant for suspension polymerization, and this ensures good polymerization stability even when its amount used is reduced. The aqueous emulsion comprising the polyvinyl alcohol is resistant to water and the viscosity of the aqueous emulsion depends little on ambient temperatures. The vinylic polymers obtained through suspension polymerization in the presence of the polyvinyl alcohol are yellowed little, and the waste water in the suspension polymerization pollutes little the environment.

    摘要翻译: 使用具有至少1.9mol%的1,2-二醇键的聚乙烯醇作为乳液聚合用分散剂或悬浮聚合用分散剂,即使减少其使用量,也保证了良好的聚合稳定性。 包含聚乙烯醇的水乳液对水具有抗性,并且水性乳液的粘度在环境温度下几乎不受影响。 在聚乙烯醇存在下通过悬浮聚合获得的乙烯基聚合物几乎变黄,并且悬浮聚合中的废水污染很少的环境。

    Method for producing polyvinyl ester resin emulsion
    8.
    发明授权
    Method for producing polyvinyl ester resin emulsion 失效
    聚乙烯酯树脂乳液的生产方法

    公开(公告)号:US06780931B2

    公开(公告)日:2004-08-24

    申请号:US09939811

    申请日:2001-08-28

    IPC分类号: C08L2904

    摘要: Provided is a polyvinyl ester resin emulsion which has high viscosity and has good water resistant adhesiveness, heat-resistant adhesiveness, hot water-resistant adhesiveness and storage stability, especially high-temperature storage stability, and which has good film-forming ability and is readily formed into transparent films. The emulsion is produced in a method of polymerizing a vinyl ester monomer in a mode of emulsion polymerization in the presence of a polyvinyl alcohol serving as protective colloid and in the presence of a water-insoluble, hydroxyl group-containing compound.

    摘要翻译: 本发明提供一种具有高粘度,耐水粘合性,耐热粘合性,耐热水粘合性和储存稳定性,特别是高温保存稳定性的聚乙烯基酯树脂乳液,其成膜性良好,容易 形成透明膜。 该乳液是在聚乙烯醇作为保护胶体存在下和在不溶于水的含羟基化合物存在下,以乳液聚合的方式聚合乙烯基酯单体的方法生产的。

    Dispersion stabilizer for suspension polymerization of vinyl compound
    9.
    发明授权
    Dispersion stabilizer for suspension polymerization of vinyl compound 失效
    乙烯基化合物悬浮聚合分散稳定剂

    公开(公告)号:US06635709B2

    公开(公告)日:2003-10-21

    申请号:US09907941

    申请日:2001-07-19

    IPC分类号: C08L2904

    摘要: A dispersion stabilizer for suspension polymerization of a vinyl compound containing a vinyl alcohol polymer (A) having a content of an ethylene unit of 0.5 to 10 mol %, a degree of saponification of 60 mol % or more and a degree of polymerization of 600 or more and a vinyl alcohol polymer (B) selected from the group consisting of a vinyl alcohol polymer (B1) having a content of an ethylene unit of 0.5 to 10 mol %, a degree of saponification of 20 to 80 mol % and a degree of polymerization of 100 to 600, a vinyl alcohol polymer (B2) having a degree of saponification of 20 to 60 mol % and a degree of polymerization of 100 to 600 and a vinyl alcohol polymer (B3) having a content of an ethylene unit of 0.5 to 10 mol %, a degree of saponification of 90 mol % or more and a degree of polymerization of 1,000 or more.

    摘要翻译: 含有乙烯单元含量为0.5〜10摩尔%,皂化度为60摩尔%以上,聚合度为600以下的乙烯醇系聚合物(A)的乙烯基化合物的悬浮聚合用分散稳定剂 更优选乙烯醇聚合物(B),其选自乙烯单元含量为0.5〜10摩尔%,皂化度为20〜80摩尔%的乙烯醇聚合物(B1)和 100至600的聚合,皂化度为20至60摩尔%,聚合度为100至600的乙烯醇聚合物(B2)和乙烯单元含量为0.5的乙烯醇聚合物(B3) 至10摩尔%,皂化度为90摩尔%以上,聚合度为1000以上。