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RU2226200C2 - Способ получения моющихся, сушащихся эластичных изделий - Google Patents

Способ получения моющихся, сушащихся эластичных изделий Download PDF

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Publication number
RU2226200C2
RU2226200C2 RU2000133323/04A RU2000133323A RU2226200C2 RU 2226200 C2 RU2226200 C2 RU 2226200C2 RU 2000133323/04 A RU2000133323/04 A RU 2000133323/04A RU 2000133323 A RU2000133323 A RU 2000133323A RU 2226200 C2 RU2226200 C2 RU 2226200C2
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RU
Russia
Prior art keywords
linear ethylene
ethylene polymer
product
melt
molding
Prior art date
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RU2000133323/04A
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English (en)
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RU2000133323A (ru
Inventor
Тхои Х. ХО (US)
Тхои Х. ХО
Рексфорд А. МОГАНС (US)
Рексфорд А. МОГАНС
Эдвард Н. НИКЕРБОКЕР (US)
Эдвард Н. НИКЕРБОКЕР
Original Assignee
Дау Глобал Текнолоджиз Инк.
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Publication of RU2000133323A publication Critical patent/RU2000133323A/ru
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Publication of RU2226200C2 publication Critical patent/RU2226200C2/ru

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Abstract

Изобретение относится к способу получения улучшенных полиолефиновых эластичных изделий из вулканизованных, облученных и сшитых аморфных сополимеров этилена. Способ включает стадии изготовления из, по меньшей мере, одного гомогенно разветвленного сополимера этилена, имеющего плотность менее 0,90 г/см3 при 23°С, и азотсодержащего стабилизатора с последующей обработкой изделия ионизирующим излучением. Величина радиации составляет по меньшей мере 3 Мрад. После формования и сшивки облучением полученное изделие имеет остаточную деформацию менее 60% и релаксацию напряжения меньше или равную 25%. Полученное изделие обладает улучшенной эластичностью при повышенной температуре, а также устойчивостью к стирке и сушке, что позволяет использовать такие изделия для нижнего белья, одежды и пеленок. 4 c. и 7 з.п. ф-лы, 3 ил., 4 табл.

Description

Текст описания в факсимильном виде (см. графическую часть).

Claims (11)

1. Способ получения формованного сшитого облучением эластичного изделия, включающий стадии изготовления или формования изделия из по меньшей мере одного гомогенно разветвленного сополимера этилена и по меньшей мере одного стабилизатора с последующей обработкой изделия ионизирующим излучением, отличающийся тем, что гомогенно разветвленный сополимер этилена имеет плотность, определенную согласно ASTM D-792, менее 0,90 г/см3 при 23°С и стабилизатором является азотсодержащий стабилизатор, присутствующий в количестве по меньшей мере 0,05 мас.%, величина радиации составляет по меньшей мере 3 Мрад и после формования и сшивки облучением полученное изделие имеет остаточную деформацию менее 60% и релаксацию напряжения, меньше или равную 25%, измеренные при толщине 2 мил (50,8 мкм) с использованием тензометра Инстрон при 23°С и 200%-ной деформации.
2. Способ по п.1, отличающийся тем, что дополнительно вводят по меньшей мере одну про-рад-добавку в сополимер.
3. Способ по п.1 или 2, отличающийся тем, что по меньшей мере одним гомогенно разветвленным сополимером этилена является гомогенно разветвленный линейный полимер этилена или, по существу, линейный сополимер этилена, имеющий отношение текучести расплава I10/I2>5,63; молекулярно-массовое распределение Мw/Мn, как определено гельпроникающей хроматографией и определено по уравнению Mw/Mn ≤ (I10/I2) - 4,63 и такую газоэкструзионную реологию, что критическая скорость сдвига при возникновении поверхностного разрушения расплава, по существу, линейного полимера этилена является не менее чем на 50% больше критической скорости сдвига при возникновении поверхностного разрушения расплава линейного полимера этилена, где, по существу, линейный полимер этилена и линейный полимер этилена содержат одинаковый сомономер или сомономеры, линейный полимер этилена имеет I2 и Mw/Мn в 10% от, по существу, линейного полимера этилена, и где соответствующие критические скорости сдвига, по существу, линейного полимера этилена и линейного полимера этилена определяются при одинаковой температуре расплава с использованием газоэкструзионного реометра; и единственный пик плавления, определенный дифференциальной сканирующей калориметрией, находится в интервале от -30 до 150°С.
4. Способ по любому из пп.1-3, отличающийся тем, что ионизирующим облучением является электронное излучение.
5. Способ по любому из пп.1-4, отличающийся тем, что по меньшей мере один азотсодержащий стабилизатор выбирается из группы, состоящей из гидрохинолина, дифениламина и замещенного пиперидина.
6. Способ по любому из пп.1-5, отличающийся тем, что изделие изготавливается с использованием технологии, выбранной из группы, состоящей из прядения волокна из расплава, получения волокна дутьем расплава, прядением, переплетением, чесания, раздувки пленки, отливки пленки, инжекционного формования, пултрузии, термоформования, тиснения, штамповки, пневмоформования, листовой экструзии, отливки из раствора, нанесения покрытия из раствора, термоламинирования, каландрования, формования на валках, реакционного инжекционного формования, нанесения покрытия экструзией, нанесения дисперсионного покрытия и ротационного формования.
7. Способ по любому из пп.1-6, отличающийся тем, что изделию дают охладиться или закалиться до температуры в интервале 0 - 30°С перед приложением дополнительного нагревания или ионизирующего облучения.
8. Формованное изделие, приготовленное по способу по любому из пп.1-7.
9. Формованное изделие по п.8, отличающееся тем, что оно выполнено в форме пленки, волокна, отливки, термоформовки, тканой или нетканой ткани.
10. Предмет личной гигиены, отличающийся тем, что он содержит формованное изделие по п.8 или 9.
11. Предмет по п.10, отличающийся тем, что им является пеленка одноразового использования или предмет инфекционного контроля.
RU2000133323/04A 1998-06-01 1999-05-27 Способ получения моющихся, сушащихся эластичных изделий RU2226200C2 (ru)

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AU759029B2 (en) 2003-04-03
CA2332558A1 (en) 1999-12-09
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AR019148A1 (es) 2001-12-26
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BR9911213B1 (pt) 2010-11-16
US6559208B2 (en) 2003-05-06
KR20010052504A (ko) 2001-06-25
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DE69933214D1 (de) 2006-10-26
EP1086188B1 (en) 2006-09-13
HK1035550A1 (en) 2001-11-30
ES2268877T3 (es) 2007-03-16
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