Patent ID: 6316070
Filing Date: 2001-11-13
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 the seam comprises a product obtained from curing a crosslinkable unsaturated carbonate adhesive material of the Formula: R.sub.1 --O--CO.sub.2 --R.sub.2 --O--R.sub.2 --O--CO.sub.2 --R.sub.1, wherein R.sub.1 is an unsaturated chain having from about 2 to about 40 carbon atoms, and wherein R.sub.2 is different from R.sub.1 and is selected from the group consisting of a) a non-substituted 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 the substituted groups have substituents 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.