Expandable Functional TFE Copolymer Fine Powder, the Expanded Functional Products Obtained Therefrom and Reaction of the Expanded Products
First Claim
1. A functional TFE copolymer fine powder resin comprisinga TFE copolymer comprising a polymer chain of TFE and at least one comonomer having a functional group pendant to the polymer chain,wherein the functional TFE copolymer fine powder resin is paste extrudable and expandable into a porous functional TFE copolymeric material having a microstructure characterized by nodes interconnected by fibrils.
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Abstract
A functional TFE copolymer fine powder is described, wherein the TFE copolymer is a polymer of TFE and at least one functional comonomer, and wherein the TFE copolymer has functional groups that are pendant to the polymer chain. The functional TFE copolymer fine powder resin is paste extrudable and expandable. Methods for making the functional TFE copolymer are also described. The expanded functional TFE copolymer material may be post-reacted after expansion.
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Citations
67 Claims
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1. A functional TFE copolymer fine powder resin comprising
a TFE copolymer comprising a polymer chain of TFE and at least one comonomer having a functional group pendant to the polymer chain, wherein the functional TFE copolymer fine powder resin is paste extrudable and expandable into a porous functional TFE copolymeric material having a microstructure characterized by nodes interconnected by fibrils.
- 10. An expanded polymeric material comprising a functional TFE copolymer material having a microstructure characterized by nodes interconnected by fibrils wherein the TFE copolymer comprises a polymer chain of TFE and at least one comonomer having a functional group that is pendant to the polymer chain.
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29. A process comprising
a) polymerizing TFE and at least one comonomer comprising a functional group to form a functional TFE copolymer having a multiplicity of functional groups that are pendant to the polymer chain; -
b) expanding the functional TFE copolymer to form an expanded TFE copolymeric material having functional groups and a microstructure characterized by nodes interconnected by fibrils; and c) reacting the functional groups after the step of expanding the functional TFE copolymer to change a chemical or physical property of the expanded functional TFE copolymer material. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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- 41. A composite comprising an expanded functional TFE copolymer material characterized by nodes interconnected by fibrils comprising a copolymer of TFE and at least one comonomer having a functional group that is pendant to the polymer chain and at least one bioactive species immobilized thereto.
- 47. A composite comprising an expanded functional TFE copolymer material characterized by nodes interconnected by fibrils comprising a copolymer of TFE and at least one comonomer having a carboxylic acid functional group that is pendant to the polymer chain, and a polysaccharide containing a hydroxyl functional group wherein the composite comprises an ester bond between the expanded functional TFE copolymer material and polysaccharide.
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48. A composite comprising an expanded functional TFE copolymer material characterized by nodes interconnected by fibrils, the composite comprising:
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a.) a copolymer of TFE and b.) at least one comonomer having an amine functional group that is pendant to the polymer chain, and c.) a polysaccharide immobilized thereto.
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- 51. A medical device comprising an expanded polymeric material comprising a functional TFE copolymer material having a microstructure characterized by nodes interconnected by fibrils wherein the TFE copolymer comprises a polymer chain of TFE and at least one comonomer having a functional group that is pendant to the polymer chain.
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54. A medical device comprising an expanded functional TFE copolymer material characterized by nodes interconnected by fibrils comprising a copolymer of TFE and at least one comonomer having an amine functional group that is pendant to the polymer chain, and a polysaccharide immobilized thereto.
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55. A composite membrane comprising:
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a. An expanded polymeric material comprising a functional TFE copolymer material having a microstructure characterized by nodes interconnected by fibrils wherein the TFE copolymer comprises a polymer chain of TFE and at least one comonomer having a functional group that is pendant to the polymer chain; and b. a material at least partially imbibed into said expanded polymeric material. - View Dependent Claims (56, 57, 58, 59, 60, 61)
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62. An expanded polymeric material comprising a functional TFE copolymer material having a microstructure characterized by nodes interconnected by fibrils wherein the TFE copolymer comprises:
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a) a polymer chain of TFE and at least one comonomer having a functional group that is pendant to the polymer chain; and b) a filler material. - View Dependent Claims (63)
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64. A process comprising:
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providing a functional TFE copolymer fine powder resin comprising; a) TFE copolymer comprising a polymer chain of TFE and at least one comonomer having a functional group pendant to the polymer chain, wherein the functional TFE copolymer fine powder resin is paste extrudable and expandable into a porous functional TFE copolymeric material having a microstructure characterized by nodes interconnected by fibrils; and b) treating said functional TFE copolymer fine powder with radiation. - View Dependent Claims (65)
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66. A process comprising:
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a. providing an expanded polymeric material comprising a functional TFE copolymer material having a microstructure characterized by nodes interconnected by fibrils wherein the TFE copolymer comprises a polymer chain of TFE and at least one comonomer having a functional group that is pendant to the polymer chain; and b. treating said functional expanded polymer material with radiation. - View Dependent Claims (67)
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Specification