Patent ID: 6730385
Filing Date: 2004-05-04
Classification: B32B,C08J,F16J,Y10T

Abstract:
A laminate comprisinga first layer of a perfluororubber, wherein said perfluororubber is a copolymer of a perfluoroalkylene having 2 to 6 carbon atoms, a component providing a vulcanizing site, and a perfluoroalkyl vinyl ether of the formula (I): Rfâ€”Oâ€”(CFXCF2O)nâ€”CF&boxH;CF2â€ƒâ€ƒ(I) wherein Rf is a perfluoroalkyl group having 1 to 5 carbon atoms, X is a fluorine atom or a trifluoromethyl group, and n is an integer of 0 to 4; a second layer of rubber other than a perfluororubber, and an adhesive third layer, disposed between the first and second layers, containing a polyfunctional compound which adheres the first and second layers by vulcanization; wherein said polyfunctional compound has a functional group which functions as a vulcanizing site for said perfluororubber and a another group which functions as a vulcanizing site for said rubber other than a perfluororubber; wherein said component providing a vulcanizing site is at least one component selected from the group consisting of 4-bromo-3,3,4,4-tetrafluorobutene-1, a compound represented by formula (II), a compound represented by formula (III) and a compound represented by formula (IV); wherein said compounds of formulae (II), (III) and (IV) are as follows: a compound of formula (II): RBrxIyâ€ƒâ€ƒ(II) wherein R is a hydrocarbon group having 1 to 8 carbon atoms, a fluorohydrocarbon group having 1 to 8 carbon atoms or a chlorofluorohydrocarbon group having 1 to 8 carbon atoms, x is an integer of 0 to 2, and y is an integer of 0 to 2, provided that the sum of x and y is at least 1; a compound of the formula (III): CF2&boxH;CFâ€”O(CF2CFYO)aâ€”(CF2CF2CH2O)bâ€”CF2CF2CH2Zâ€ƒâ€ƒ(III) wherein Y is a fluorine atom or a trifluoromethyl group, Z is a hydrogen atom or a halogen atom, a is an integer of 0 to 2, and b is an integer of 0 to 5; and a compound of formula (IV): CX2&boxH;CXO(CX2)nYâ€ƒâ€ƒ(IV) wherein X is a hydrogen atom or a fluorine atom, Y is a bromine atom or an iodine atom, and n is an integer of 1 to 9.