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§177.1460 密胺/甲醛树脂的模制制品(Melamine-formaldehyde resins in molded articles)
2011-10-05 20:46  点击:3416
发布单位:FDA
发布文号:56 FR 42933
发布日期:1991-08-29
生效日期:暂无
有效性状态:
废止日期:暂无
备注:本节所指的密胺/甲醛树脂是由1mol的密胺与不超过3mol的水溶液中的甲醛在水溶液中反映制得。本树脂可与精制木浆混合,混合物还可含有本章178.3297中所用的着色剂,邻苯二甲酸辛酯、六亚甲基四胺、邻苯二甲酸酐、硬脂酸锌。与食品接触的模制密胺/甲醛制品,当用由食品类型决定的溶剂按本章175.300(d)表1和表2中的温度、时间下浸提,所得的浸提物的净量不得超过0.5mg/in2接触食品的表面。

  §177.1460 Melamine-formaldehyde resins in molded articles.


      Melamine-formaldehyde resins may be safely used as the food-contact surface of molded articles intended for use in producing, manufacturing, packing, processing, preparing, treating, packaging, transporting, or holding food in accordance with the following prescribed conditions:

  (a) For the purpose of this section, melamine-formaldehyde resins are those produced when 1 mole of melamine is made to react with not more than 3 moles of formaldehyde in water solution.

  (b) The resins may be mixed with refined woodpulp and the mixture may contain other optional adjuvant substances which may include the following:

List of substances Limitations
Colorants used in accordance with § 178.3297 of this chapter  
 Dioctyl phthalate  For use as lubricant.
 Hexamethylenetetramine  For use only as polymerization reaction control agent.
 Phthalic acid anhydride  Do.
 Zinc stearate  For use as lubricant.


  (c) The molded melamine-formaldehyde articles in the finished form in which they are to contact food, when extracted with the solvent or solvents characterizing the type of food and under the conditions of time and temperature as determined from tables 1 and 2 of § 175.300(d) of this chapter, shall yield net chloroform-soluble extractives not to exceed 0.5 milligram per square inch of food-contact surface.

    [42 FR 14572, Mar. 15, 1977, as amended at 56 FR 42933, Aug. 30, 1991]

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下一篇:§177.1480 由丙烯腈/丙烯酸甲酯共聚物改性的腈橡胶(Nitrile rubber modified acrylonitrile-methyl acrylate copolymers)
上一篇:§177.1440 最低相对分子质量为10000的4,4'-亚异丙基二酚/表氯醇树脂