Patent ID: 11931931
Assignee: CARIFLEX PTE. LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC B  A  C | IPC A  B  C

Claim 7:
8. A laminated article comprising at least two layers:
a first layer comprising a first latex composition containing at least a cross-linker component selected from sulfur, organic peroxide, vulcanizing activators, and vulcanizing accelerator;
a second layer comprising a second latex composition free of the cross-linker component;
wherein laminated article is formed by:
dipping a mold having a form of the laminated article into the first latex composition, forming the first layer;
dipping the mold having the first layer formed thereon into the second latex composition, forming a laminated article with the second layer on the first layer;
curing the laminated article by heating to a temperature between 90° C. to 140° C.; and
inverting the laminated article such that the second layer is inwards and the first layer is outwards,

wherein the first latex composition and the second latex composition are prepared from a same synthetic isoprene block copolymer, and
wherein the synthetic isoprene block copolymer has a general formula A-B—Y-(B-A)n, wherein (n+1) represents an average number of arms in a coupled polymer and n ranges from 1 to 6 and Y represents a residue of a coupling agent, A is formed by polymerization of mono-alkenyl arene monomers selected from the group consisting of styrene, α-methylstyrene, methylstyrenes other than α-methylstyrene, vinyl toluene, para-butylstyrene, ethylstyrene and vinylnapthalene, and B is a polymer block of a conjugated diene selected from the group consisting of 1,3-butadiene, substituted butadiene and mixtures thereof.