发明名称 |
METHOD OF MANUFACTURING HEAT AND LIGHT RESISTANT POLYESTER MULTIFILAMENTS, MONOFILAMENTS AND FLOCK |
摘要 |
The process for production of a heat-stable and light-fast product consisting of multifilaments, monofilaments or flock for textile and industrial applications includes mixing from 0.2 to 0.5% by weight, based on the amount of product, of a UV absorber having a melting point of from 135 to 145° C. and a colorant having a melting point greater than 180° C. with a polyester powder at room temperature to form a starting mixture; feeding from 1 to 100% of the starting mixture and from 0 to 99% by weight PET granules into a cooled feed zone of a twin-screw extruder; operating the twin-screw extruder to melt, knead and homogenize the feed to form polymer strands, which are then cooled and cut to form a compound; and subsequently melt-spinning the compound to form the product. When the product is made by this method the UV absorber is incorporated in the product, thus avoiding the additive-related manufacturing problems. |
申请公布号 |
EP0900248(B1) |
申请公布日期 |
2001.12.12 |
申请号 |
EP19970917985 |
申请日期 |
1997.05.14 |
申请人 |
RHODIA INDUSTRIAL YARNS AG |
发明人 |
ENGGASSER, JOSIANE;VOGT, WERNER |
分类号 |
C08J3/12;C08J3/20;C08J3/22;D01F6/92 |
主分类号 |
C08J3/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|