Curable composition comprising crosslinkable polymers prepared from oligomeric chain transfer agents
First Claim
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1. A crosslinkable or curable composition comprising, by weight of (a) and (b) below, the following separate components:
- (a) 5 to 60 percent of a crosslinking agent;
(b) 40 to 95 percent of a copolymer having crosslinkable groups, which copolymer is the reaction product of free radical polymerization of a reaction mixture comprising;
(a) for chain transfer, an effective mount of an oligomeric chain transfer agent, or of a molecular weight distribution of oligomeric compounds having the following end group;
##STR9## wherein n is on average 2 to 100 and X1 to Xn are independently X, wherein X is -CONR2, -COOR, OR1, -OCOR, -OCOOR1, -NRCOOR1, halo, cyano, or a substituted or unsubstituted phenyl or aryl, wherein each R is independently selected from the group consisting of hydrogen, silyl, or a substituted or unsubstituted alkyl, alkyl ether, phenyl, benzyl, and aryl, wherein substituted means with a substituent selected from the group consisting of epoxy, hydroxy, isocyanato, cyano, amino, silyl, acid, halo, or acyl; and
wherein R1 is the same as R except not H; and
wherein each alkyl is independently selected from the group consisting of branched, unbranched, or cyclical hydrocarbons having 1 to 12 carbon atoms; and
halo or halogen is bromo, iodo, chloro or fluoro;
except excluding the use of a pure dimer when X is substituted or unsubstituted phenyl or aryl; and
(b) a mixture of monomers, the same or different, of which 2 to 100 percent by weight of the monomers have a reactive functionality which, on the polymerization product, is capable of crosslinking with itself or another polymer.
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Abstract
A curable composition comprising a crosslinkable copolymer, wherein the copolymer is the free radical polymerization product of a mixture of monomers in the presence of a terminally unsaturated oligomeric chain transfer catalyst. Such compositions have advantageous properties when used in a variety of products including high performance coatings.
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11 Claims
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1. A crosslinkable or curable composition comprising, by weight of (a) and (b) below, the following separate components:
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(a) 5 to 60 percent of a crosslinking agent; (b) 40 to 95 percent of a copolymer having crosslinkable groups, which copolymer is the reaction product of free radical polymerization of a reaction mixture comprising; (a) for chain transfer, an effective mount of an oligomeric chain transfer agent, or of a molecular weight distribution of oligomeric compounds having the following end group;
##STR9## wherein n is on average 2 to 100 and X1 to Xn are independently X, wherein X is -CONR2, -COOR, OR1, -OCOR, -OCOOR1, -NRCOOR1, halo, cyano, or a substituted or unsubstituted phenyl or aryl, wherein each R is independently selected from the group consisting of hydrogen, silyl, or a substituted or unsubstituted alkyl, alkyl ether, phenyl, benzyl, and aryl, wherein substituted means with a substituent selected from the group consisting of epoxy, hydroxy, isocyanato, cyano, amino, silyl, acid, halo, or acyl; and
wherein R1 is the same as R except not H; and
wherein each alkyl is independently selected from the group consisting of branched, unbranched, or cyclical hydrocarbons having 1 to 12 carbon atoms; and
halo or halogen is bromo, iodo, chloro or fluoro;
except excluding the use of a pure dimer when X is substituted or unsubstituted phenyl or aryl; and(b) a mixture of monomers, the same or different, of which 2 to 100 percent by weight of the monomers have a reactive functionality which, on the polymerization product, is capable of crosslinking with itself or another polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification
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Current AssigneeE. I. du Pont de Nemours and Company (Corteva, Inc.)
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Original AssigneeE. I. du Pont de Nemours and Company (Corteva, Inc.)
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InventorsBerge, Charles T., Antonelli, Joseph A., Darmon, Michael J.
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Primary Examiner(s)Schofer, Joseph L.
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Assistant Examiner(s)SAROFIM, NABIL F
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Application NumberUS08/104,957Time in Patent Office484 DaysField of Search526/194, 526/213, 526/201, 526/206, 526/207, 526/209, 526/215, 526/217, 526/204, 525/377US Class Current525/377CPC Class CodesC08F 2/38 Polymerisation using regula...
