Polycarbonate polyol compositions
View Patent ↗The present invention provides polycarbonate polyol compositions with improved characteristics. Such polycarbonate polyol compositions are useful in thermosetting applications for the production of coatings for consumer products.
1. A poly(propylene carbonate) polyol composition characterized in that the composition has:
i. at least 95% —OH end groups;
ii. a glass transition temperature (Tg) from about −20° C. to about 60° C.;
iii. a polydispersity index (PDI) less than 2;
iv. a Mn less than 15 kDa; and
v. greater than 95% carbonate linkages between adjacent monomer units in the polycarbonate chains.
2. The poly(propylene carbonate) polyol composition of claim 1 comprising polymer chains denoted P 1 having the formula T-Y-A-(Y-T) n wherein:
each -T is a polycarbonate chain having a formula independently selected from the group consisting of:
wherein:
E is a C 3 unit derived from propylene oxide;
p ranges from about 5 to about 75;
each Y group is independently the bound form of a functional group capable of initiating chain growth of epoxide CO 2 copolymers, optionally comprising one or multiple repeating units of a bivalent C 2-5 , straight or branched, saturated hydrocarbon chain, wherein one methylene unit of each hydrocarbon group is replaced with —O—;
-A- is a covalent bond, a heteroatom, or a multivalent moiety; and
n is from 1 to 10 inclusive.
3. The poly(propylene carbonate) polyol composition of claim 2 , wherein n is 1.
4. The poly(propylene carbonate) polyol composition of claim 3 , wherein -A- is oxygen.
5. The poly(propylene carbonate) polyol composition of claim 3 , wherein -A- is a covalent bond.
6. The poly(propylene carbonate) polyol composition of claim 4 , wherein each Y group comprises one unit of propylene glycol.
7. The poly(propylene carbonate) polyol composition of claim 6 , wherein the P 1 polymer chains have the formula:
8. The poly(propylene carbonate) polyol composition of claim 3 , wherein each Y group comprises one or more repeating units of ethylene glycol.
9. The poly(propylene carbonate) polyol composition of claim 8 , wherein the P 1 polymer chains have the formula:
wherein z is from 1 to 10, inclusive.
10. The poly(propylene carbonate) polyol composition of claim 9 , wherein the repeating units of ethylene glycol corresponds to PEG 400.
11. The poly(propylene carbonate) polyol composition of claim 2 , wherein n is from 2 to 10, inclusive, and -A- is a multivalent moiety.
12. The poly(propylene carbonate) polyol composition of claim 11 , wherein the —Y-A-(Y—) n moiety is derived from a polyol having three, four, five, or six hydroxyl groups.
13. The poly(propylene carbonate) polyol composition of claim 12 , wherein each Y group comprises one more repeating units of ethylene glycol.
14. The poly(propylene carbonate) polyol composition of claim 13 , wherein the P 1 polymer chains have the formula:
wherein each z is independently from 1 to 10.
15. The poly(propylene carbonate) polyol composition of claim 1 , characterized in that the weight percentage of poly(propylene carbonate) in the composition is greater than 90%.
16. The poly(propylene carbonate) polyol composition of claim 15 , characterized in that the weight percentage of poly(propylene carbonate) in the composition is greater than 92%.
17. The poly(propylene carbonate) polyol composition of claim 16 , characterized in that the weight percentage of poly(propylene carbonate) in the composition is greater than 93%.
18. The poly(propylene carbonate) polyol composition of claim 17 , characterized in that the weight percentage of poly(propylene carbonate) in the composition is greater than 95%.
19. The poly(propylene carbonate) polyol composition of claim 18 , characterized in that the weight percentage of poly(propylene carbonate) in the composition is greater than 97%.
20. The poly(propylene carbonate) polyol composition of claim 19 , characterized in that the weight percentage of poly(propylene carbonate) in the composition is greater than 98%.
21. The poly(propylene carbonate) polyol composition of claim 20 , characterized in that the weight percentage of poly(propylene carbonate) in the composition is greater than 99%.
22. The poly(propylene carbonate) polyol composition of claim 1 , characterized in that the weight percentage of propylene carbonate in the composition is less than 10%.
23. The poly(propylene carbonate) polyol composition of claim 22 , characterized in that the weight percentage of propylene carbonate in the composition is less than 5%.
24. The poly(propylene carbonate) polyol composition of claim 23 , characterized in that the weight percentage of propylene carbonate in the composition is less than 3%.
25. The poly(propylene carbonate) polyol composition of claim 24 , characterized in that the weight percentage of propylene carbonate in the composition is less than 2%.
26. The poly(propylene carbonate) polyol composition of claim 25 , characterized in that the weight percentage of propylene carbonate in the composition is less than 1%.
27. The poly(propylene carbonate) polyol composition of claim 1 , characterized in that the composition has a Tg from about −20° C. to about 30° C.
28. The poly(propylene carbonate) polyol composition of claim 27 , characterized in that the composition has a Tg from about 0° C. to about 30° C.
29. The poly(propylene carbonate) polyol composition of claim 27 , characterized in that the composition has a Tg from about −10° C. to about 20° C.
30. The poly(propylene carbonate) polyol composition of claim 29 , characterized in that the composition has a Tg from about 5° C. to about 15° C.
31. The poly(propylene carbonate) polyol composition of claim 1 , characterized in that the composition has a PDI less than 1.7.
32. The poly(propylene carbonate) polyol composition of claim 31 , characterized in that the composition has a PDI less than 1.5.
33. The poly(propylene carbonate) polyol composition of claim 32 , characterized in that the composition has a PDI less than 1.4.
34. The poly(propylene carbonate) polyol composition of claim 33 , characterized in that the composition has a PDI less than 1.3.
35. The poly(propylene carbonate) polyol composition of claim 34 , characterized in that the composition has a PDI less than 1.2.
36. The poly(propylene carbonate) polyol composition of claim 35 , characterized in that the composition has a PDI less than 1.1.
37. The poly(propylene carbonate) polyol composition of claim 36 , characterized in that the composition has a PDI less than 1.05.
38. The poly(propylene carbonate) polyol composition of claim 1 , characterized in that the composition has a Mn less than 10 kDa.
39. The poly(propylene carbonate) polyol composition of claim 38 , characterized in that the composition has a Mn from about 1 kDa to about 8 kDa.
40. The poly(propylene carbonate) polyol composition of claim 39 , characterized in that the composition has a Mn of about 3 kDa.
41. The poly(propylene carbonate) polyol composition of claim 2 , having the structure:
wherein the Mn of the composition is in the range from about 2.5 kDa to about 4 kDa.
42. The poly(propylene carbonate) polyol composition of claim 2 , having the structure:
wherein each z is independently from 1 to 10, each p is independently about 5 to about 75, and the Mn of the composition is in the range from about 2.5 kDa to about 6 kDa.
43. The poly(propylene carbonate) polyol composition of claim 2 , having the structure:
wherein each z is independently from 1 to 10, each p is independently about 5 to about 75, and the Mn of the composition is in the range from about 2.5 kDa to about 6 kDa.
44. The poly(propylene carbonate) polyol composition of claim 2 , having the structure:
wherein each z is independently from 1 to 10, each p is independently about 5 to about 75, and the Mn of the composition is in the range from about 2.5 kDa to about 6 kDa.