Breathable biodegradable hot melt composition
View Patent ↗A composition that includes a biodegradable aliphatic-aromatic polyester and plasticizer including polar groups and exhibits a moisture vapor transmission rate of at least 400 g/m 2 /day.
1. A composition consisting essentially of:
poly(tetramethylene adipate-co-terephthalate);
plasticizer comprising polar groups; and
optionally tackifying resin,
said composition exhibiting a moisture vapor transmission rate of at least 400 g/m 2 /day.
2. The composition of claim 1 , wherein said composition exhibits a moisture vapor transmission rate of at least 1000 g/m 2 /day.
3. The composition of claim 1 , wherein said composition exhibits a moisture vapor transmission rate of at least 2000 g/m 2 /day.
4. The composition of claim 1 , wherein said plasticizer is selected from the group consisting of esters of citric acid, benzoic acid esters, and combinations thereof.
5. The composition of claim 1 , wherein said plasticizer is selected from the group consisting of sucrose benzoate, 1,4-cyclohexane dimethanol dibenzoate, diethylene glycol dibenzoate, dipropylene glycol dibenzoate, polyethylene glycol dibenzoate, and combinations thereof.
6. The composition of claim 1 , wherein said plasticizer is selected from the group consisting of phosphates, polyalklylene glycols, dionyl phenol ethoxylates, ethoxylated bisphenol A, liquid rosin derivatives having a ring and ball softening point less than 60° C., phosphites, toluene sulfonamide, and combinations thereof.
7. A composition comprising:
poly(tetramethylene adipate-co-terephthalate); and
plasticizer comprising polar groups, said plasticizer being selected from the group consisting of esters of citric acid, benzoic acid esters, sucrose benzoate, 1,4-cyclohexane dimethanol dibenzoate, diethylene glycol dibenzoate, dipropylene glycol dibenzoate, polyethylene glycol dibenzoate, polyalklylene glycols, dionyl phenol ethoxylates, ethoxylated bisphenol A, liquid rosin derivatives having a ring and ball softening point less than 60° C., phosphites, toluene sulfonamide, and combinations thereof,
said composition exhibiting a moisture vapor transmission rate of at least 656 g/m 2 /day.
8. The composition of claim 1 comprising said tackifying resin, wherein said tackifying resin is selected from the group consisting of natural rosins, modified rosins, rosin esters, phenolic modified terpene resins, phenolic modified alpha methyl styrene resins, aliphatic petroleum hydrocarbon resins, aromatic petroleum hydrocarbon resins, aromatic modified alicyclic petroleum hydrocarbon resins, alicyclic petroleum hydrocarbon resins, and the hydrogenated derivatives thereof, and combinations thereof.
9. The composition of claim 1 , wherein said tackifying resin is selected from the group consisting of polylactic acid and glycerol ester of hydrogenated rosin.
10. The composition of claim 7 , wherein said composition exhibits a moisture vapor transmission rate of at least 1000 g/m 2 /day.
11. The composition of claim 1 , wherein said tackifying resin is biodegradable.
12. The composition of claim 1 , wherein said tackifying resin is selected from the group consisting of polylactic acid and poly(hydroxy valerate butyrate).
13. The composition of claim 7 , further comprising breathable thermoplastic polymer.
14. The composition of claim 13 , wherein said breathable thermoplastic polymer is selected from the group consisting of polyether-polyester block copolymers, polyether-polyamide block copolymers, and combinations thereof.
15. The composition of claim 13 , wherein said breathable thermoplastic polymer is water sensitive.
16. The composition of claim 1 , comprising
from 10% by weight to 70% by weight poly(tetramethylene adipate-co-terephthalate), and
from 10% by weight to 50% by weight plasticizer.
17. The composition of claim 1 , comprising
from 10% by weight to 70% by weight poly(tetramethylene adipate-co-terephthalate), and
from 10% by weight to 40% by weight plasticizer.
18. The composition of claim 1 , comprising
from 10% by weight to 70% by weight poly(tetramethylene adipate-co-terephthalate), and
from 10% by weight to 30% by weight plasticizer.
19. The composition of claim 1 , comprising
from 20% by weight to 60% by weight poly(tetramethylene adipate-co-terephthalate), and
from 10% by weight to 30% by weight plasticizer.
20. A composition consisting essentially of:
biodegradable aliphatic-aromatic copolyester; and
plasticizer comprising polar groups,
said composition exhibiting a moisture vapor transmission rate of at least 400 g/m 2 /day.
21. The composition of claim 20 , wherein said biodegradable aliphatic-aromatic copolyester is selected from the group consisting of poly(ethylene glutarate-co-terephthalate), poly(tetramethylene glutarate-co-terephthalate), poly(tetramethylene glutarate-co-terephthalate-co-diglycolate), poly(ethylene adipate-co-terephthalate), poly(tetramethylene succinate-co-terephthalate), poly(ethylene glutarate-co-naphthalene dicarboxylate, poly(tetramethylene glutarate-co-naphthalene dicarboxylate), poly(tetramethylene adipate-co-naphthalene dicarboxylate, poly(ethylene adipate-co-naphthalene dicarboxylate), poly(tetramethylene succinate-co-naphthalene dicarboxylate), poly(ethylene succinate-co-naphthalene dicarboxylate, and combinations thereof.
22. The composition of claim 20 , wherein said composition exhibits a moisture vapor transmission rate of at least 2000 g/m 2 /day.
23. A composition consisting of:
biodegradable aliphatic-aromatic copolyester; and
plasticizer comprising polar groups,
said composition exhibiting a moisture vapor transmission rate of at least 400 g/m 2 /day.
24. The composition of claim 7 , further comprising tackifying resin.
25. The composition of claim 7 , wherein said composition exhibits a moisture vapor transmission rate of at least 1000 g/m 2 /day.
26. The composition of claim 7 , wherein said composition exhibits a moisture vapor transmission rate of at least 2000 g/m 2 /day.