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21cfr177.1520翻译稿

21cfr177.1520翻译稿
21cfr177.1520翻译稿

模塑粉的大小。这

可以做到方便使用

小规模商业塑料

造粒机和切割样品

通过一个屏幕有4英寸网状。

细颗粒物应分开

削减筛选树脂,通过一个20 -

丝网。材料上保留

屏幕是适合提取

测试。

(二)必须是有机溶剂

美国化学学会分析

试剂级;蒸馏水使用。

约30克的准备

到最近的样品称重

毫克。权衡的树脂转移

一个500毫升圆底

配备回流冷凝器的烧瓶。

大约300毫升的溶剂

添加到烧瓶和内容

轻轻地用回流8小时

加热套。然后过滤溶剂

立即关闭趁热,

使用布氏漏斗约

直径为5英寸,吸瓶,

和硬化滤纸(瓦特曼

第50或同等学历)。该文件是湿的与溶剂和轻微的吸力

应用刚刚开始前的过滤。

该树脂是洗两次

约100毫升的部分

溶剂和合并滤液,

洗涤是减少至约

25毫升在减少蒸发

压力(50毫米至100毫米

汞,绝对),作为加热

必要的。烧瓶的内容

被转移到蒸发皿

(已在真空干燥器举行

无水硫酸钙

已达到至恒重)

并仔细蒸发

干燥。固体残渣的重量

是由区别在举行

在无水的真空干燥器

硫酸钙直至恒

体重已经达到。百分比

固体中提取的计算方法是

固体残渣的重量

样品的重量乘以

100。

(5)粘度(VN)的。(一)粘度(VN)的尼龙6 / 12树脂

在一个96%的硫酸溶液(5

应毫克每毫升树脂)

在25 °C(77 °F)的方法决定ISO 307-1984(五),“塑料聚酰胺

粘数的测定,

这是中以供参考。

市民可从中心

食品安全与应用营养学

(HFS- 200),食品和药物管理局,5100涂料科PKWY学院

公园,MD20740,或可供查阅

在联邦注册办公室,

800北国会街,净重。

套房700,华盛顿特区,20408。(二)粘数(越南)

尼龙6 /69和尼龙PA- 6 - 3- T树脂

在99%的甲酚溶液(5毫克

应确定每毫升树脂)

在25 °C(77°F)的方法ISO 307-1984(E)“塑料- 聚酰胺的测定粘数。“

这是中以供参考。“

此注册成立的可用性

给定值(d)段(5)(我)

本节。

[42 FR14572,1977年3月15日]

编者按:ForFEDERAL寄存器参考文献影响§177.1500,看到名单

CFR第影响,这将出现在

寻找艾滋病印量的部分

GPO的访问

烯烃聚合物。

烯烃段所列聚合物

(一)本节可能是安全的

作为文章或文章组件

用于接触使用

食品,受本规定

一节。

(一)对于本节的目的,

烯烃聚合物的基本聚合物

制造本段所述,

所以,以满足规格

在本条第(三)款规定的,

测试时,描述的方法

本条第(四)段。

(1)(一)聚丙烯的基本组成

聚合物制造的催化

聚合的丙烯。

(二)由丙烯均聚物

由基本聚合物生产

丙烯催化聚合

用茂金属催化剂。

(2)(我)聚乙烯的基本组成

聚合物制造的催化

聚合的乙烯。

(二)富马酸接枝聚乙烯

(CAS注册号26877-81-6)由

基本聚合物制造

催化聚合

其次是与富马酸反应的乙烯

酸自由基的情况下

发起人。这种聚合物

包含嫁接富马酸水平

重量不超过2%

成品聚合物

(3)基本烯烃共聚物组成

所生产的基本共聚物

催化共聚:

(一)两个或两个以上的有1-烯烃2至8个碳原子。这种烯烃

基本共聚物中含有不低于

96重量%的聚合物导出单位

乙烯和/或丙烯,

除外:

(一)(1)基本烯烃共聚物生产催化共聚

乙烯和己烯-1或

乙烯和辛烯- 1应不包含

小于90重量%的聚合物

从乙烯为基本单位;

(2)烯烃基本共聚物生产

催化共聚

乙烯和己烯-1应包含

不低于80但不超过

90重量的百分之聚合物导出单位

乙烯。

(3)烯烃基本共聚物生产

催化共聚

乙烯和戊烯- 1

含有不低于90重量%

从乙烯衍生的聚合物单位。

(4)生产的烯烃基本共聚物

催化聚合

乙烯和辛烯- 1应包含

不重量小于50%的聚合物

从乙烯为基本单位。

(二)生产烯烃基本共聚物

催化共聚

乙烯和methylpentene-4 -1

应包含不低于89 weightpercent

来自聚合物单位

乙烯;

(三)(1)基本烯烃共聚物生产

催化共聚

两个或多个单体

乙烯,丙烯,丁烯-1,2 -

甲基丙烯- 1,2,4,4 -

trimethylpentene- 1应不包含

低于85%聚合物重量

乙烯和/或丙烯的单位;

(2)烯烃基本共聚物生产

催化共聚

丙烯和丁烯-1应

包含大于15,但不大于

超过聚合物重量的35%

从丁烯-1与派生的单位

其余为丙烯。

(四),烯烃的基本三元共聚物制造

催化共聚

乙烯,己烯-1,要么丙烯,丁烯-1,应包含不小于85重量%的聚合物

从乙烯为基本单位

(五)生产的烯烃基本共聚物

催化聚合

乙烯和辛烯- 1,或乙烯,

辛烯,要么己烯-1,丁烯-1,

丙烯,或4 methylpentene- 1应

含有不低于80重量%

从乙烯衍生的聚合物单位。

(二)4,Methylpentene- 1和1 -烯烃从6至18个碳原子。这种

烯烃基本共聚物应包含

不低于95摩尔%的聚合物

4导出单位-

methylpentene-1,除非该共聚物

生产的1 - 烯烃有

自12至18个碳原子

含有不低于97摩尔%

4衍生的聚合物单位- methylpentene-1;

(三)乙烯和丙烯,

可能含有作为修饰语不超过

聚合物总重量超过5%

共聚而得的单位

以下的一个或多个单体:

5 Ethylidine- 2 - 降冰片烯。

5 - 甲基- 2 -降冰片。

(四)乙烯和丙烯的可能

包含一个修饰不超过4.5

聚合物总单位的重量百分比

衍生共聚与1,4 -

己二烯。

(V)乙烯和丁烯-1共聚物

(CAS注册编号25087-34-7)应

含有不低于80重量%

从乙烯衍生的聚合物单位。

(六)烯烃(CAS基本共聚物

注册号61615-63-2)生产

催化共聚

乙烯和丙烯与1,4 -

己二烯,反应与

延胡索酸在自由基的情况下

发起人。这种聚合物

含有不超过4.5%

从1,4产生的聚合物单位-

己二烯由总聚合物重量

富马酸反应和前

接枝富马酸不超过2.2%

酸由成品重量

聚合物。

七)乙烯和2 - 降冰片烯(CAS

注册号26007-43-2)共聚物

应包含聚合物不低于30和不超过70摩尔%单位来自2 - 降冰片烯。

(4)聚(methylpentene)由

由基本聚合物生产

催化聚合4 -

methylpentene-1。

(5)聚乙烯接枝共聚物

包括遵守聚乙烯

本节项目2.2(c)段

随后有3A,4,7,7 atetrahydromethyl

4,7 -

methanoisobenzofuran- 1 ,3 -二酮嫁接

到它的水平不超过1.7

成品共聚物的重量%。

(6)乙烯- 马来酸酐共聚物

(CAS注册号9006-26-2)

来自共聚物单位重量不超过2%

顺酐。

(二)基本烯烃聚合物确定

在本节第(一)

可能包含可选的辅助物质

需要生产

这些基本烯烃聚合物。可选

需要的辅助物质

生产的基本烯烃聚合物

或成品食品接触的物品

可能包括允许使用的物质

如使用适用的法规

通过本章的170189部分,

一般认为安全的物质

在食品及食品包装,物质

用于按照事先制裁

或批准,以下

(四)确定分析方法

是否符合烯烃聚合物

在本节规定的规格如下,并适用

在电影中的基础聚合物

形成不超过4密耳厚度。

要测试的电影应被切割成

约1英寸的正方形的任何

方便的方法,避免污染

由灰尘,污垢或油脂

(注意:请勿触摸裸露的样本

手指使用镊子,持有或转让

样本)。

(1)密度。密度确定

ASTM方法D1505- 68(重新核准1979年),“标准测试方法

密度塑料密度

渐变技术,''这是成立

以供参考。副本可

获得美国社会

为试验材料,1916年赛街,

费城,PA19103,或可能检查

在联邦办公室

注册,国会街800北,

净重,套房700,华盛顿,DC20408。(2)熔点或软化点(I)

熔点。熔点应

由ASTM方法D2117-

82,“熔化的标准测试方法

点半结晶聚合物

白热化阶段显微镜方法。“

这是中以供参考。“

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