Stock material or miscellaneous articles – Hollow or container type article – Paper containing
Patent
1996-12-04
1998-07-07
Berman, Susan W.
Stock material or miscellaneous articles
Hollow or container type article
Paper containing
428 343, 428447, 428451, 428452, 522 84, 522 99, 528 32, 528 38, 528 39, 524837, B32B 904, B32B 906, C08G 7718, C08G 7702
Patent
active
057765650
ABSTRACT:
Hybrid sol-gel barrier coatings are produced by hydrolyzing a tetrafunctional alkoxide silicate and a silane having one or two pendant crosslinkable groups in water or water plus a water miscible organic solvent and a catalytic amount a protic acid, Lewis acid, or metal chelate, until a viscosity of from about 2,600 to about 3,200 cps is obtained. The product is then diluted water or water plus a water miscible organic solvent, optionally containing a protic acid, Lewis acid, or metal chelate, until a viscosity of about 0.5 to about 10 cps is obtained. The diluted product is blended with a photoinitiator, coated onto a substrate, dried and irradiated to obtain oxygen barrier films having a very low oxygen transmission rate.
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Lucas Paul C.
Volpe Raymond A.
Berman Susan W.
International Paper Company
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