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US 10,897,895 B2Granted
Thermoplastic materials having beneficial properties and processes for providing the same
AssigneeQuadsil, Inc.
InventorsJohn D. Blizzard, Joan McMahon, Michael Silver
Life of this patent
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Abstract
Methods of providing sustained sterilization of thermoplastics; providing thermoplastics that have the capacity to dispense sodium fluoride, and, a method of providing sustained sterilization of thermoplastics and providing thermoplastics that have the capacity to dispense sodium fluoride, both from the same thermoplastic article.
Claims25
A method of providing a thermoplastic material, said method comprising:
- A. providing a hydrolyzate of a silane having the general formula:
- (RO)3Si(CH2)nN+(R′)2(R″)Cl−
- wherein R is an alkoxy group having 1 to 4 carbon atoms, n has a value of 3 to 8, each R′ is selected from alkyl groups having 1 to 4 carbon atoms, and R″ is the radical —(CH2)mCH3Cl− wherein m has a value of 12 to 20;
- B. coating particulates of a thermoplastic with said hydrolyzate;
- C. heating and drying said coated particulate thermoplastics to yield dry coated thermoplastic particulates;
- D. providing said coated thermoplastic particulates as feedstock for providing a thermoplastic material by a process selected from the group consisting of:
- i. melt-spinning, and
- ii. injection molding;
- wherein the thermoplastic material reduces the growth of bacteria or micro-organisms.
6 more elements
A method of providing a thermoplastic material, said method comprising:
- A. providing a hydrolyzate of a silane having the general formula:
- (RO)3Si(CH2)nN+(R′)2(R″)Cl−
- wherein R is an alkoxy group having 1 to 4 carbon atoms, n has a value of 3 to 8, each R′ is selected from alkyl groups having 1 to 4 carbon atoms, and R″ is the radical —(CH2)mCH3Cl− wherein m has a value of 12 to 20;
- B. adding a desired amount of sodium fluoride solution to said hydrolyzate;
- C. coating particulates of a thermoplastic with said hydrolyzate containing said sodium fluoride;
- D. heating and drying said coated particulates to yield dry coated thermoplastic particulates;
- E. providing said coated thermoplastic particulates as feedstock for providing a thermoplastic material by a process selected from the group consisting of:
- i. melt-spinning, and
- ii. injection molding;
- wherein the thermoplastic material reduces the growth of bacteria or micro-organisms;
- and wherein the thermoplastic material has the capacity to dispense the sodium fluoride.
8 more elements
Dependencies are inferred from the claim text.