Liquid Adhesive

Abstract

A low-expanding adhesive composition comprising: a diisocyanate, a surfactant and an activator is provided. The provided adhesive composition cures upon exposure to water. The adhesive composition can be used to bond wood, metal, glass, ceramic, leather, acrylic, PVC and combinations thereof.

We claim: 
     
         1 . A moisture-activated adhesive composition comprising:
 98.85-95.2% by weight Rubinate 9511;   0.15-0.8% by weight DMDEE; and   1-4% by weight SAG 47.   
     
     
         2 . The moisture-activated adhesive composition of  claim 1 , wherein the percentages by weight of the components in the moisture-activated adhesive composition are: 97.2% by weight Rubinate 9511; 0.3% by weight DMDEE; and 2.5% by weight SAG 47. 
     
     
         3 . The moisture-activated adhesive composition of  claim 1 , consisting essentially of: 97.2% by weight Rubinate 9511; 0.3% by weight DMDEE; and 2.5% by weight SAG 47 
     
     
         4 . The moisture-activated adhesive composition of  claim 1 , consisting of: 97.2 by weight Rubinate 9511; 0.3% by weight DMDEE; and 2.5% by weight SAG 47. 
     
     
         5 . A method for bonding surfaces together comprising:
 applying to a first surface a moisture-activated adhesive composition comprising:   98.85-95.2% by weight Rubinate 9511; 0.15-0.8% by weight DMDEE; and 1-4% by weight SAG 47;   contacting said first surface with a second surface under curing conditions; and   curing the adhesive composition.   
     
     
         6 . The method of  claim 5 , wherein the curing step is performed by applying water to at least one of the first and second surfaces. 
     
     
         7 . The method of  claim 5 , wherein the curing step is performed by applying the adhesive composition in a humid environment. 
     
     
         8 . The method of  claim 5 , wherein the uncured adhesive has an unconstrained expansion of a maximum of 300% by volume when cured. 
     
     
         9 . The method of  claim 5 , wherein the adhesive composition consists of: 97.2% by weight Rubinate 9511; 0.3% by weight DMDEE; and 2.5% by weight SAG 47. 
     
     
         10 . The method of  claim 5 , wherein the surfaces are selected from the group consisting of: wood, metal, glass, ceramic, leather, acrylic, PVC and combinations thereof. 
     
     
         11 . The method of  claim 5 , wherein the adhesive composition consists essentially of:
 98.85-95.2% by weight Rubinate 9511;   0.15-0.8% by weight DMDEE; and   1-4% by weight SAG 47.   
     
     
         12 . The method of  claim 5 , wherein the adhesive composition consists of:
 98.88-95.2% by weight Rubinate 9511;   0.15-0.8% by weight DMDEE; and   1-4%by weight SAG 47.   
     
     
         13 . A method for making a moisture-activated adhesive composition comprising combining the components:
 98.85-95.2% by weight Rubinate 9511;   0.15-0.8% by weight DMDEE; and   1-4% by weight SAG 47, to form a homogenous liquid.   
     
     
         14 . The method of  claim 13 , wherein the components consist essentially of:
 98.85-95.2% by weight Rubinate 9511; 0.15-0.8% by weight DMDEE; and 1-4% by weight SAG 47.   
     
     
         15 . The method of  claim 13 , wherein the components consist of: 98.85-95.2% by weight Rubinate 9511; 0.15-0.8% by weight DMDEE; and 1-4% by weight SAG 47. 
     
     
         16 . The method of  claim 13 , wherein the components consist of: 97.2% by weight Rubinate 9511; 0.3% by weight DMDEE; and 2.5% by weight SAG 47.