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U.S. Department of Health and Human Services

Inventory of Effective Food Contact Substance (FCS) Notifications

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FCN No. 413

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Food Contact Substance:  Polyester-polyurethane resin-acid dianhydride adhesives.
Notifier:  Dainippon Ink and Chemicals, Inc.
Manufacturer:  Dainippon Ink and Chemicals, Inc.
Intended Use:  For use as an adhesive in laminate structures that are intended for use at retort temperatures.
Effective Date:  07/06/2004
Limitations/Specifications:  For use in finished food-contact articles in contact with all food types at temperatures not to exceed 135°C (275°F). The food contact substance may be fabricated from the following: 1) Polyesterpolyurethanediol resins prepared by the reaction of a mixture of polybasic acids and polyhydric alcohols listed in 21 C.F.R. 175.300(b)(3)(vii) and 3- isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate (CAS Reg No. 4098-71-9). Additionally, 1,6-hexanediol may be used as a polybasic alcohol reactant. 2) Optional trimethoxysilane coupling agents containing amino, epoxy, ether, or mercapto groups not in excess of 3 percent by weight of the cured adhesive. 3) Urethane cross-linking agent, comprising not more than 12 percent by weight of the cured adhesive, and formulated from 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate and/or trimethylol propane (CAS Reg. No. 77-99-6 ) adduct of 1,3-bis(isocyanatomethyl)benzene (CAS Reg. No. 25854-16-4). 4) Optional use of acid dianhydride formulated from 3a,4,5,7a-tetrahydro-7-methyl-5- (tetrahydro-2,5-dioxo-3-furanyl)-1,3-isobenzofurandione(CAS Reg. No. 73003- 90-4), comprising not more than 1 percent by weight of the cured adhesive.
Environmental Impact Decisions:  Environmental Decisions Site