Back to results
US 2006/0124240 A1Published application
Aqueous adhesive
AssigneeDenki Kagaku Kogyo Kabushiki Kaisha
InventorsKiyoshi Sunada, Kunio Kaneda, Mikio Yamaguchi
Life of this patent
Estimating the term…
Abstract
A two part aqueous adhesive comprising a main agent containing a polychloroprene latex as a main component and a curing agent, the main agent and the curing agent being separated during storing or transporting.
Claims7
1:
- A two part aqueous adhesive comprising a main agent containing a polychloroprene latex as a main component and a curing agent, the main agent and the curing agent being separated, wherein the main agent contains (i) a polychloroprene latex obtained by copolymerizing a chloroprene monomer and a carboxyl group-containing vinyl monomer at a temperature of from 30 to 50° C., and in the presence of polyvinyl alcohol in water as a medium, and the curing agent is a water dispersion type isocyanate curing agent, and wherein the polychloroprene latex polymer contained in the main agent has a toluene-insoluble content of from 5 to 50 wt %.
2:
- The aqueous adhesive according to claim 1, wherein the polychloroprene latex contained in the main agent is a latex obtained by copolymerizing a monomer mixture containing a carboxyl group-containing vinyl monomer in an amount of from 0.01 to 10 mass parts to 100 mass parts of the total monomers.
3:
- The aqueous adhesive according to claim 1, wherein the main agent additionally contains (ii) a tackifier resin in a solid content mass ratio of (i) 100 mass parts to (ii) 20-100 mass parts.
4:
- The aqueous adhesive according to claim 1, wherein said copolymerizing is at a temperature of from greater than 30 and up to 50° C.
5:
- The aqueous adhesive according to claim 1, wherein said copolymerizing is at a temperature of from 45 to 50° C.
6:
- A method for bonding a foamed rubber material and a cloth, which comprises a step of coating the two part aqueous adhesive as defined in claim 1 on the surface of the foamed rubber material and a step of immediately overlaying the cloth on the aqueous adhesive coated on the foamed rubber material and press-bonding.
7:
- A method for bonding cut surfaces to each other of a spongy part of a laminate of a foamed rubber material and a cloth, which comprises a step of coating the two part aqueous adhesive as defined in claim 1 on the cut surface of the laminate and a step of immediately bonding the cut surfaces to each other.