Solventless adhesive composition process and laminate with same

A solventless adhesive (SLA) composition comprising:

• an isocyanate component A that is a reaction product of an aliphatic polyisocyanate, an aromatic polyisocyanate, an aliphatic polyester polyol, and a polyether polyol;
• a polyol component B comprising an aliphatic polyester polyol and a polyether polyol;
• isocyanate component A and polyol component B each comprising an aliphatic polyester polyol having a viscosity from 800 to 6000 mPas at 25° C. and a hydroxyl number from 60 to 180 mg KOH/g, the SLA composition having;
• (a) an initial viscosity at 40° C. from 500 to 1600 mPa·s,
• (b) an increasing viscosity ratio from 100% to 112% of the initial viscosity after the SLA composition stands at 40°° C. for 10 min, and
• (c) an end viscosity at 40° C. from 120% to 210% of the initial viscosity at a time 40 min after forming the SLA composition.

A laminate product comprising:

• a first film layer;
• a second film layer;
• and
• a solventless adhesive (SLA) layer between the first film layer and the second film layer, the SLA layer comprising;
• an isocyanate component A that is a reaction product of an aliphatic polyisocyanate, an aromatic polyisocyanate, an aliphatic polyester polyol, and a polyether polyol;
• a polyol component B comprising an aliphatic polyester polyol and a polyether polyol;
• isocyanate component A and polyol component B each comprising an aliphatic polyester polyol having a viscosity from 800 to 6000 mPas at 25° C. and a hydroxyl number from 60 to 180 mg KOH/g, the SLA layer having
• (a) an initial viscosity at 40°° C. from 500 to 1600 mPa·s,
• (b) an increasing viscosity ratio from 100% to 112% of the initial viscosity after the SLA composition stands at 40° C. for 10 min, and
• (c) an end viscosity at 40°° C. from 120% to 210% of the initial viscosity at a time 40 min after forming the SLA composition.