Solventless Adhesive Composition and Process for Making and Use in Forming a Laminate

A two-component solventless adhesive (SLA) composition comprising:

• an isocyanate component A comprising a blend of (i) an aromatic isocyanate prepolymer and (ii) an aliphatic isocyanate prepolymer;
• a polyol component B comprising a blend of;
• (i) a phosphate-functional polyol,
• (ii) a polyether polyol, and
• (iii) an element selected from the group consisting of a polyurethane polyol, a polyester polyol and a combination thereof;
• the composition having
• a weight ratio of component A to component B from 2:1 to 1:1;
• a pot life from 30 min to 60 min at 40° C.;
• and
• a primary aromatic amine decay level from 0.1 pbb to 1.4 pbb after 24 hours curing at 25° C. and 50% humidity.

A laminate product comprising:

• a first film;
• a second film;
• and
• a solventless adhesive composition disposed between the first film and the second film, the solventless adhesive composition comprising
• (a) an isocyanate component A comprising a blend of (i) an aromatic isocyanate prepolymer and (ii) an aliphatic isocyanate prepolymer;
• (b) a polyol component B comprising a blend of
• (i) a phosphate-functional polyol,
• (ii) a polyether polyol, and
• (iii) an element selected from the group consisting of a polyurethane polyol, a polyester polyol and a combination thereof;
• the composition having
• a weight ratio of component A to component B from 2:1 to 1:1;
• a pot life from 30 min to 60 min at 40° C.;
• and
• a primary aromatic amine decay level from 0.1 pbb to 1.4 pbb after 24 hours curing at 25° C. and 50% humidity.