(i) エラストマー、ポリマー Elastomers.
Acrylonitrile-butadiene copolymer. （ＮＢＲ）
Brominated isobutylene-isoprene copolymers complying with Sec. 177.1210. （臭化ブチルゴム）
Butadiene-acrylonitrile-ethylene glycol dimethacrylate copolymers containing not more than 5 weight percent of polymer units
derived from ethylene glycol dimethacrylate.
Butadiene-acrylonitrile-methacrylic acid copolymer.
Butadiene-styrene-methacrylic acid copolymer.
Chlorotrifluoroethylene-vinylidene fluoride copolymer.
Ethylene-propylene copolymer elastomers which may contain not more than 5 weight-percent of total polymer units
derived from 5-methylene-2- norbornene and/or 5-ethylidine-2-norbornene.（ＥＮＢ５％以下のＥＰＤＭ）
Ethylene-propylene-dicyclopentadiene copolymer. （ＤＣＰ系のＥＰＤＭ）
Ethylene-propylene-1,4-hexadiene copolymers containing no more than 8 weight percent of total polymer units derived
Hydrogenated butadiene/acrylonitrile copolymers (CAS Reg. No. 88254-10-8) produced when acrylonitrile/butadiene
copolymers are modified by hydrogenation of the olefinic unsaturation to leave not more than 10 percent
trans olefinic unsaturation and no α,β-olefinic unsaturation as determined by a method entitled
``Determination of Residual α,β-Olefinic and Trans Olefinic Unsaturation
Levels in HNBR,'' developed October 1, 1991, by Polysar Rubber Corp., 1256 South Vidal St., Sarnia,
Ontario, Canada N7T 7MI, which is incorporated by reference in accordance with 5 U.S.C. 552(a)
and 1 CFR part 51. Copies may be obtained from the Center for Food Safety and Applied Nutrition
(HFS-200), Food and Drug Administration, 200 C St. SW., Washington, DC 20204, or may be examined
at the Office of the Federal Register, 800 North Capitol St. NW., suite 700, Washington, DC.
Isobutylene-isoprene copolymer （ブチルゴム）
Polyamide/polyether block copolymers (CAS Reg. No. 77402-38-1 prepared by reacting a copolymer
of omega-laurolactam and adipic acid with poly(tetramethylene ether glycol).The polyamide and polyether
components are reacted in ratios such that the polyamide component constitutes a minimum of 30 weight-percent of
total polymer units. The copolymers may be used in contact with foods of
Types I, II, III, IV, V, VI, VII, VIII, and IX identified in table 1 of Sec. 176.170(c) of this chapter at temperatures not
to exceed 150 deg.F except that those copolymers prepared with less than 50 weight-percent of polyamide are
limited to use in contact with such foods at temperatures not to exceed 100 deg.F.
Polyester elastomers derived from the reaction of dimethyl terephthalate, 1,4-butanediol, and
α-hydro-omega-hydroxypoly (oxytetramethylene). Additionally, trimethyl trimellitate may be used
as a reactant. The polyester elastomers may be used only in contact with foods containing not more than
8 percent alcohol and limited to use in contact with food at temperatures not exceeding 150 deg.F.
Polyurethane resins (CAS Reg. Nos. 37383-28-1 or 9018-04-6) derived from the reaction of diphenylmethane
diisocyanate with 1,4-butanediol and polytetramethylene ether glycol.（ウレタンゴム）
Polyurethane resins derived from reactions of diphenylmethane diisocyanate with adipic acid and 1,4-butanediol.
Silicone basic polymer as described in ASTM method D1418-81, ``Standard Practice for Rubber and Rubber Latices--
Nomenclature,'' which is incorporated by reference. Copies may be obtained from the American Society for Testing
Materials, 1916 Race St., Philadelphia, PA 19103, or may be examined at the Office of the Federal Register, 800
North Capitol Street, NW., suite 700, Washington, DC 20408.
Silicone (Si) elastomers containing methyl groups.
Silicone (Psi) elastomers containing methyl and phenyl groups.
Silicone (Vsi) elastomers containing methyl and vinyl groups.
Silicone (Fsi) elastomers containing methyl and fluorine groups.
Silicone (PVsi) elastomers containing phenyl, methyl, and vinyl groups.
Vinylidene fluoride-hexafluoropropylene copolymers (minimum number average molecular weight 70,000 as determined
by osmotic pressure in methyl ethyl ketone).
Vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene copolymers (minimum number average molecular weight
100,000 as determined by osmotic pressure in methyl ethyl ketone). （フッ素ゴムの一部）
(ii)加硫材料 Vulcanization materials-
(a)加硫剤 Vulcanizing agents.
4,4'-Bis(aminocyclohexyl)methane carbamate for use only as cross-linking
agent in the vulcanization of vinylidene fluoridehexafluoropropylene
copolymer and vinylidene fluoride-hexafluoropropylene-
tetrafluoroethylene copolymer elastomers identified under paragraph
(c)(4)(i) of this section and limited to use at levels not to exceed 2.4
percent by weight of such copolymers.
Diisopropyl xanthogen polysulfide (a 1:2:1 mixture of O,O-di(1-
thioformate, and O,O-di(1-methylethyl)pentathio-bis-thioformate) for use
as a cross linking agent in the vulcanization of natural rubber,
styrene-butadiene copolymer, acrylonitrile-butadiene copolymer, and
ethylene-propylene terpolymers identified under paragraph (c)(4)(i) of
this section and limited to use at levels not to exceed 2.4 percent by
weight of such copolymers.
Hexamethylenediamine carbamate for use only as cross-linking agent in
the vulcanization of vinylidene fluoride-hexafluoropropylene copolymer
and vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene
copolymer elastomers identified under paragraph (c)(4)(i) of this
section and limited to use at levels not to exceed 1.5 percent by weight
of such copolymers.
(b) 加硫促進剤 合計で1.5ｗｔ％を越さないこと
Accelerators (total not to exceed 1.5 percent by weight of
Butyraldehyde-aniline resin (iodine number 670-705).
Carbon disulfide-1,1'-methylenedipiperidine reaction product.
Diisopropyl xanthogen polysulfide (a 1:2:1 mixture of O,O-di(1-
thioformate, and O,O-di(1-methylethyl)pentathio-bis-thioformate).
Di(4-methylbenzoyl) peroxide (CAS Reg. No. 895-85-2) for use only as a
crosslinking agent in silicone polymers and elastomers identified under
paragraph (c)(4)(i) of this section at levels not to exceed 1 percent by
weight of such polymers and elastomers where the total of all
accelerators does not exceed 1.5 percent by weight of rubber product.
Dibutyl xanthogen disulfide.
N,N-Dimethylcyclohexylamine salt of dibutyldithiocarbamic acid.
Dipentamethylenethiuram hexasulfide (CAS Reg. No. 971-15-3).
Di-o-tolylguanidine salt of pyrocatecholborate.
Heptaldehyde-aniline resin (iodine number 430-445).
Stannous oleate for use only as an accelerator for silicone elastomers.
(1,1,4,4-Tetramethyltetramethylene)bis [tert-butyl peroxide].
Thiram (tetramethylthiuram disulfide).
Zinc butyl xanathate.
Zinc dibenzyl dithiocarbamate.
Ziram (zinc dimethyldithiocarbamate).
Retarders (total not to exceed 10 percent of weight of rubber
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