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US 8,575,245 B2Granted
Tunable polymer compositions
AssigneeNovomer, Inc.
InventorsRobert E. LaPointe, Scott D. Allen, Jeffrey R. Conuel
Life of this patent
Estimating the term…
Abstract
The present invention provides polycarbonate compositions having a tunable decomposition temperature. Suitable cationic additives (e.g., phosphonium, phosphazene, quaternary ammonium, guanidinium, pyridinium, arsonium, etc.) are disclosed for lowering the decomposition temperature of polymer compositions. The invention further provides methods of preparing such polymer compositions with tunable decomposition temperatures.
Claims44
A polymer composition, comprising:
- a) a polymer selected from the group consisting of:
- wherein:
- each occurrence of Ra is independently hydrogen or an optionally substituted group selected from the group consisting of C1-30 aliphatic;
- C1-30 heteroaliphatic having 1-4 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur;
- 6- to 10-membered aryl;
- 5- to 10-membered heteroaryl having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur;
- and 3- to 7-membered heterocyclic having 1-3 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur;
- and
- each occurrence of Rb, Rc, and Rd is independently hydrogen or an optionally substituted group selected from the group consisting of C1-12 aliphatic;
- C1-12 heteroaliphatic having 1-4 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur;
- 6- to 10-membered aryl;
- 5- to 10-membered heteroaryl having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur;
- and 3- to 7-membered heterocyclic having 1-3 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur;
- wherein any of (Ra and Rc), (Rc and Rd), and (Ra and Rb) can be taken together with their intervening atoms to form one or more optionally substituted rings;
- and
- b) an additive comprising an organic cation characterized in that its presence modulates the decomposition temperature of the polymer composition;
- wherein the additive is present at a concentration in the range of about 100 to 3500 ppm by weight;
- wherein the polymer composition comprises transition metals in an amount less than 10 ppm.
15 more elements
A method for modulating the decomposition temperature of a polymer composition, the method comprising:
- a) providing a polymer selected from the group consisting of:
- wherein:
- each occurrence of Ra is independently hydrogen or an optionally substituted group selected from the group consisting of C1-30 aliphatic;
- C1-30 heteroaliphatic having 1-4 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur;
- 6- to 10-membered aryl;
- 5- to 10-membered heteroaryl having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur;
- and 4- to 7-membered heterocyclic having 1-3 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur;
- and
- each occurrence of Rb, Rc, and Rd is independently hydrogen or an optionally substituted group selected from the group consisting of C1-12 aliphatic;
- C1-12 heteroaliphatic having 1-4 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur;
- 6- to 10-membered aryl;
- 5- to 10-membered heteroaryl having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur;
- and 4- to 7-membered heterocyclic having 1-3 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur;
- wherein any of (Ra and Rce), (Rc and Rd), and (Ra and Rb) can be taken together with their intervening atoms to form one or more optionally substituted rings;
- and
- b) admixing the polymer composition with an effective amount of an additive comprising an organic cation capable of modulating the decomposition temperature of the polymer composition;
- wherein the additive is present in the polymer composition at a concentration in the range of about 100 to 3500 ppm by weight, and the polymer composition comprises transition metals in an amount less than 10 ppm.
14 more elements
Dependencies are inferred from the claim text.