发明名称 |
White opaque foil for electrical isolating, protection glazings and signboard, comprises crystallizable thermoplastic polyester having soluble dye, barium sulfate, titanium dioxide and brightener |
摘要 |
<p>The foil has 50 wt% of crystallizable thermoplastic polyester, 1-20 wt% of barium sulfate and titanium dioxide and 1-25000 ppm of optical brighteners related to the weight of the thermoplastics of a pigmented layer. The polyester units are ethyleneglycol and terephthal acid and/or isophthal acid, naphthalin-1,5-dicarbonicacid or naphthalin-2,6-dicarbonicacid. The polyester (greater than 50 wt%) is polyethylene terephthalate, polyethylene naphthalate or their mixtures. The foil further comprises a base layer, sealable surface layers. The surface layer contains polyethylene terephthalate, polyethylene naphthalate or a copolymer of polyethylene terephthalate-polyethylene naphthalate. The foil exhibits 1-20% of transparency and yellow value with a thickness of 50 mu m, white degree of greater than 85%, dielectric strength of larger than 150 kv/mm, void-index of larger than 87% and density of larger than 1.39 kg/dm3>. The foil: is corona treated for the additional functionality; exhibits an additional functionality and shrinks of smaller than 2.5% in longitudinal and transverse direction when it is heated at 150[deg]C for 15 minutes; has adhesive coating with aminosilane or silicone; and is equipped with hydrolysis stabilizers, ultraviolet stabilizers and flame retardant for obtaining the additional functionality. An independent claim is included for production a white opaque foil.</p> |
申请公布号 |
DE102005025233(A1) |
申请公布日期 |
2006.12.07 |
申请号 |
DE20051025233 |
申请日期 |
2005.06.01 |
申请人 |
MITSUBISHI POLYESTER FILM GMBH |
发明人 |
KERN, ULRICH;MURSCHALL, URSULA;KUHMANN, BODO;JESBERGER, MARTIN |
分类号 |
C08J5/18;B32B27/18;B32B27/36;C08K3/30;C08L67/02 |
主分类号 |
C08J5/18 |
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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