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    • 112. 发明公开
    • VERFAHREN ZUM HERSTELLEN EINES WEICHEN POLYURETHANSCHAUMSTOFFS
    • EP3177678A1
    • 2017-06-14
    • EP14748193.1
    • 2014-08-04
    • Breckle Chemicals & Technics GmbH
    • BRECKLE, Gerd
    • C08J9/00C08G18/48C08L75/04
    • C08L75/04C08G18/4816C08G2101/0008C08J9/0028C08J2201/026C08J2205/05C08J2375/04
    • The invention relates to a method for producing a soft polyurethane foam having embedded polyurethane gel, which is characterized in that the polyol component is mixed from 10 to 30 wt% of a trifunctional polyether polyol having secondary hydroxyl terminal groups and having a hydroxyl value of 40 to 50, 30 to 50 wt% of a tri- or tetrafunctional polyether polyol having primary and secondary hydroxyl terminal groups at a ratio of 0.2 : 2.0 to 2.0 : 0.2 and having a hydroxyl value of 150 to 200, and 15 to 40 wt% of a trifunctional statistical block copolymer of ethylene oxide and propylene oxide at an EO/PO ratio of 0.5 : 1 to 1 : 0.5 having a hydroxyl value of 28 to 38. The method is further characterized in that the polyisocyanate component is formed of at least one isocyanate from an isocyanate group comprising toluene diisocyanate, prepolymer isocyanates having an NCO content of 10 to 30 wt%, and diphenylmethane-4,4'-diisocyanate, and in that 1,4-diazabicyclo[2.2.2]octane is added to these reaction components as a catalyst for gel formation.
    • 本发明涉及一种生产具有嵌入式聚氨酯凝胶的软质聚氨酯泡沫的方法,其特征在于,多元醇组分由10-30重量%的具有仲羟基端基且羟值为40的三官能聚醚多元醇 至50,30至50重量%的具有伯和仲羟基端基的三官能或四官能聚醚多元醇,其比例为0.2:2.0至2.0:0.2且羟基值为150至200,和15至40重量% 的EO / PO比率为0.5:1至1:0.5的羟基值为28至38的环氧乙烷和环氧丙烷的三官能的统计嵌段共聚物。该方法的进一步特征在于多异氰酸酯组分至少由 来自包含甲苯二异氰酸酯的异氰酸酯基团的一种异氰酸酯,NCO含量为10至30重量%的预聚物异氰酸酯和二苯基甲烷-4,4'-二异氰酸酯,并且1,4-二氮杂双环[2.2.2]辛烷被添加至 这些反应组分作为凝胶形成的催化剂。
    • 120. 发明公开
    • POLYURETHANE SUPPORT PAD
    • POLYURETHANUNTERLAGE
    • EP2998345A4
    • 2017-05-10
    • EP14850407
    • 2014-10-01
    • LG CHEMICAL LTD
    • SHIN DONG MOKKIM NA RIAHN BYEONG INCHOI SANG SOONTAE YOUNG JISIN CHANG HOON
    • C08J9/00B24B37/27B24B41/06C08J9/28C08L75/04
    • B24B37/24B24D3/32C08J9/28C08J2201/0544C08J2375/04C08L75/04
    • This disclosure relates to a polyurethane mounting pad having Low P compressibility of 1 to 10%, the Low P compressibility being the ratio of the difference between a first thickness and a second thickness to the first thickness, the first thickness being measured by applying a pressure of 5g/cm 2 to a thickness direction of the mounting pad, and the second thickness being measured by applying a pressure of 100g/cm 2 to a thickness direction of the mounting pad, wherein Low P compression length, which is the difference between the first thickness and the second thickness, is 15 to 100 µ m. According to the present invention, provided is a polyurethane mounting pad that has high compressibility and excellent elastic power under practical polishing conditions, and can realize more uniform and high efficiency polishing to decrease defective polishing rate.
    • 本公开涉及具有1至10%的低P可压缩性的聚氨酯安装垫,所述低P可压缩性是第一厚度与第二厚度之差与所述第一厚度之差的比率,所述第一厚度通过施加压力 所述第二厚度是通过在所述安装垫的厚度方向上施加100g / cm 2的压力来测量的,其中低P压缩长度是所述安装垫的厚度方向上的 第一厚度和第二厚度为15至100μm。 根据本发明,提供一种聚氨酯安装垫,其在实际抛光条件下具有高压缩性和优异的弹性能力,并且可以实现更均匀和高效的抛光以减少不合适的抛光速率。