Patent ID: 6355325
Filing Date: 2002-03-12
Classification: B29C,B32B,G03G,Y10T

Abstract:
An endless seamed flexible belt comprising a first end and a second end together which form a seam, wherein said seam comprises a product obtained from curing a crosslinkable unsaturated carbonate adhesive material having the following Formula I: R1â€”Oâ€”CO2â€”R2â€”Oâ€”R2â€”CO2â€”Oâ€”R1, wherein R1 is an unsaturated chain having from about 2 to about 40 carbon atoms, and wherein R2 is different from R1 and is selected from the group consisting of a) a nonsubstituted aliphatic chain having from about 1 to about 50 carbon atoms, b) a substituted aliphatic chain having from about 1 to about 50 carbon atoms, c) an unsubstituted aromatic group having form about 6 to about 30 carbon atoms, d) a substituted aromatic group having from about 6 to about 30 carbon atoms, e) unsubstituted heterocyclic group having from about 3 to about 40 carbons, and f) substituted heterocyclic group having from about 3 to about 40 carbons, wherein said substituents are selected from the group consisting of aliphatic groups having from about 1 to about 50 carbons, cycloaliphatic groups having from about 3 to about 28 carbons, halides, aromatic groups having from about 6 to about 30 carbons, nitro groups, amino groups, amido groups, cyano groups, and sulfonyl groups wherein the resulting crosslinked carbonate adhesive is depleted of crosslinkable unsaturations, and wherein the resulting seamed flexible belt is free of a thickness differential between the seamed portion of the belt and the adjacent main body of the belt.