Polyester polyols and methods of making and using the same
View Patent ↗Polyester polyols are generally disclosed, including methods of making and using them. In some embodiments, the polyester polyols are incorporated into a block copolymer, such as a polyurethane block copolymer. In some embodiments, the polyurethane block copolymers can be used as compatibilizing agents, which can be used, for example, in polymer blends, polymer alloys, solutions, emulsions, as well as in extruded and injection molded articles. In some embodiments, at least a portion of the polyurethane block copolymer is derived from a renewable source.
1. A block copolymer, comprising:
a first block, which is a polycarbamate, wherein the polycarbamate is formed from a reaction mixture that comprises a short-chain diisocyanate and a short-chain diol, and wherein at least 70% of the linkages between monomers in the polycarbamate are urethane linkages; and
a second block, which comprises a polyester, wherein the polyester is formed from a reaction mixture comprising (a) one or more short-chain diols, and (b) 1,18-octadecanedioic acid, or esters thereof, and wherein the weight-to-weight ratio of the 1,18-octadecanedioic acid, or esters thereof, to dibasic acids having fewer than 18 carbon atoms, or esters thereof, in the reaction mixture used to form the polyester is at least 20:1;
wherein the first block and the second block are linked via a carbamate group.
2. A block copolymer, comprising:
a first block, which is a polycarbamate, wherein the polycarbamate is formed from a reaction mixture that comprises a short-chain diisocyanate and a short-chain diol, and wherein at least 70% of the linkages between monomers in the polycarbamate are urethane linkages; and
a second block, which comprises a polyester, wherein the polyester is formed from a reaction mixture comprising (a) one or more short-chain diols, and (b) 1,18-octadecanedioic acid, or esters thereof, and wherein at least 80% by weight of dibasic acids, or esters thereof, in the mixture used to form the polyester are 1,18-octadecanedioic acid, or an ester thereof;
wherein the first block and the second block are linked via a carbamate group.
3. The block copolymer of claim 1 , wherein the molecular weight of the polyester is 500 Da to 100,000 Da.
4. The block copolymer of claim 1 , wherein the one or more short-chain diols used to form the polyester comprise ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, pentaethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, tetrapropylene glycol, 1,3-propanediol, 1,3-butanediol, 1,4-butanediol, neopentyl glycol, 1,5-pentanediol, 1,6-hexanediol, 1,4-cyclohexane-dimethanol, hydroquinone bis(2-hydroxyethyl)ether, p-di-(2-hydroxyethoxy)benzene, or any mixture thereof.
5. The block copolymer of claim 4 , wherein the one or more short-chain diols used to form the polyester comprise 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,7-deptanediol, 1,8-octanediol, 1,9-nonanediol, 1,10-decanediol, 1,11-undecanediol, 1,12-dodecanediol, or any mixture thereof.
6. The block copolymer of claim 5 , wherein the one or more short-chain diols used to form the polyester comprise 1,4-butanediol, 1,6-hexanediol, 1,8-octanediol, 1,10-decanediol, or any mixtures thereof.
7. The block copolymer of claim 6 , wherein the one or more short-chain diols used to form the polyester comprise 1,4-butanediol.
8. The block copolymer of claim 1 , wherein the one or more short-chain diols used to form the polyester comprise 1,2-propylene glycol.
9. The block copolymer of claim 2 , wherein the molecular weight of the polyester is 500 Da to 100,000 Da.
10. The block copolymer of claim 2 , wherein the one or more short-chain diols used to form the polyester comprise ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, pentaethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, tetrapropylene glycol, 1,3-propanediol, 1,3-butanediol, 1,4-butanediol, neopentyl glycol, 1,5-pentanediol, 1,6-hexanediol, 1,4-cyclohexane-dimethanol, hydroquinone bis(2-hydroxyethyl)ether, p-di-(2-hydroxyethoxy)benzene, or any mixture thereof.
11. The block copolymer of claim 10 , wherein the one or more short-chain diols used to form the polyester comprise 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,7-deptanediol, 1,8-octanediol, 1,9-nonanediol, 1,10-decanediol, 1,11-undecanediol, 1,12-dodecanediol, or any mixture thereof.
12. The block copolymer of claim 11 , wherein the one or more short-chain diols used to form the polyester comprise 1,4-butanediol, 1,6-hexanediol, 1,8-octanediol, 1,10-decanediol, or any mixtures thereof.
13. The block copolymer of claim 12 , wherein the one or more short-chain diols used to form the polyester comprise 1,4-butanediol.
14. The block copolymer of claim 2 , wherein the one or more short-chain diols used to form the polyester comprise 1,2-propylene glycol.