US 11,717,593 B2
Improving adhesive properties
Neal Carty, Mentor, OH (US)
Assigned to Avery Dennison Corporation, Glendale, CA (US)
Appl. No. 14/776,323
Filed by Avery Dennison Corporation, Glendale, CA (US)
PCT Filed Mar. 13, 2014, PCT No. PCT/US2014/025167
§ 371(c)(1), (2) Date Sep. 14, 2015,
PCT Pub. No. WO2014/159798, PCT Pub. Date Oct. 2, 2014.
Claims priority of provisional application 61/778,606, filed on Mar. 13, 2013.
Prior Publication US 2016/0038629 A1, Feb. 11, 2016
This patent is subject to a terminal disclaimer.
Int. Cl. A61L 24/00 (2006.01); A61K 31/192 (2006.01); A61L 15/58 (2006.01); C09J 153/02 (2006.01); C09J 11/08 (2006.01); A61K 9/70 (2006.01); C08L 1/28 (2006.01); C08L 39/06 (2006.01); A61L 24/06 (2006.01); A61L 24/08 (2006.01)
CPC A61L 24/0015 (2013.01) [A61K 9/7053 (2013.01); A61K 31/192 (2013.01); A61L 15/585 (2013.01); A61L 24/001 (2013.01); A61L 24/0094 (2013.01); A61L 24/06 (2013.01); A61L 24/08 (2013.01); C08L 1/286 (2013.01); C08L 39/06 (2013.01); C09J 11/08 (2013.01); C09J 153/02 (2013.01); A61L 2300/21 (2013.01); C08G 2170/20 (2013.01)] 9 Claims
 
1. An adhesive composition consisting of:
at least one adhesive component in an amount in the range of 61.7 to 90 wt %, wherein the adhesive component is a hot melt adhesive that is able to be processed at a temperature below 75° C.;
at least one vehicle in an amount in the range of 0.1 to 4.3 wt %, wherein the vehicle is a polyhydric alcohol selected from the group consisting of propylene glycol, glycerol, polyethylene glycol, and combinations thereof;
at least one hydrophilic absorbent in an amount in the range of 0.1 to 23.4 wt %, wherein the hydrophilic absorbent is carboxymethyl cellulose;
at least one crystallization inhibitor in an amount in the range of 0.1 to 5.5 wt %, wherein the crystallization inhibitor includes polyvinylpyrrolidone;
optionally at least one tackifier; and
optionally at least one plasticizer;
wherein at least one active agent in an amount in the range of 0.5 to 20 wt % is dissolved in the vehicle and the crystallization inhibitor prior to addition to the adhesive component; and
wherein the adhesive composition exhibits a Peel on polyethylene value of at least 2.5 N/in and a Tack value of at least 40 N/in.