Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1988-09-02
1991-04-16
Sluby, P. C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428204, 428325, 428913, 428460, 428463, 525186, 525903, 40205, 427163, 427204, 350105, G02B 5128, B05D 506
Patent
active
050081420
ABSTRACT:
A curable polymer composition for use in providing a dimensionally stable coating comprises a semi-interpenetrating polymer network. The semi-interpenetrating polymer network includes a reactive polymer component, cross-linking agent, and non-reactive polymer component. The non-reactive polymer component has a molecular weight of about 7,000-30,000, and preferably about 15,000. In preferred embodiments, the reactive polymer has a molecular weight of about 30,000-200,000, and preferably about 40,000-60,000. Spacecoat compositions made with formulations described, exhibit good long-term stability, and resistance to failure upon embossing of a substrate to which the retroreflective sheeting is applied.
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Grunzinger Raymond E.
Wilson Bruce B.
Griswold Gary L.
Kirn Walter N.
Little Douglas B.
Minnesota Mining and Manufacturing Company
Sluby P. C.
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