发明名称 |
Verfahren zur Herstellung einer Polyesterfolie mit einer dünnen gehärteten Polyurethanbeschichtung und Verwendung der Polyesterfolie. |
摘要 |
A process for producing a polyester film having a thin cured polyurethane coating, which comprises (1) appplying an aqueous composition comprising a thermosetting polyurethane prepolymer as a film-forming component to at least one surface of an unoriented aromatic polyester film to form a thin wet coating on it, said polyurethane prepolymer being characterized by (i) having a polyol component at least 10 % by weight of which is composed of a polyol containing a carbon-carbon double bond selected from unsaturated polyester polyols and polybutadiene polyols, the carbon-carbon double bond being cleavable under ultraviolet light, (ii) having a pendant anionic hydrophilic group in the polymer chain, and (iii) having isocyanate groups blocked with an oxime at the ends of the polymer chain, and (2) thereafter stretching and heat-setting the coated film, during which time the wet coating of the aqueous composition is dried and the polyurethane prepolymer is cured to form a thin cured polyurethane coating having a carbon-carbon double bond on the biaxially oriented polyester film. s |
申请公布号 |
DE68914868(D1) |
申请公布日期 |
1994.06.01 |
申请号 |
DE1989614868 |
申请日期 |
1989.02.27 |
申请人 |
TEIJIN LTD., OSAKA |
发明人 |
SUZUKI, KENJI, YOKOHAMA-SHI KANAGAWA-KEN;MIURA, SADAYOSHI, YAMATO-SHI KANAGAWA-KEN |
分类号 |
B29C55/12;B29K67/00;B29L9/00;B32B27/36;B32B27/40;C08G18/08;C08G18/12;C08G18/68;C08G18/69;C08J7/04;C09D175/14;(IPC1-7):C08J7/04;C09D175/04;C08G18/80;C08J5/18 |
主分类号 |
B29C55/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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