# US 2013/0158152 A1 · Interpenetrating polymer network and method for making the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0158152 A1 - Document ID: US20130158152A1 - Status: Published application - Kind: A1 - Application number: 13/653,607 - Filed: 2012-10-17 - Published: 2013-06-20 - Earliest claimed: 2011-12-17 - Assignees: Tsinghua University; Hon Hai Precision Industry Co., Ltd. - Inventors: LI WANG; XIANG-MING HE; JIAN-JUN LI; JIAN GAO; CHANG-YIN JIANG - Web page: https://patentgrep.com/patent/US20130158152A1 ## CPC - C08F 2/48: by ultraviolet or visible light - C08F 220/286: {and containing polyethylene oxide in the alcohol moiety, e.g. methoxy polyethylene glycol (meth)acrylate} - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS ## Abstract An interpenetrating polymer network includes CH2—CH2—On segments, and is formed by polymerizing a first monomer R1—OCH2—CH2—OnR2 with a second monomer R3—OCH2—CH2—OmR4 under an initiator. Each “R1”, “R2” and “R3” includes —C═C— group or —C≡C— group. The “R4” includes an alkyl group or a hydrogen atom. The “m” and “n” are integer. Molecular weights of the first monomer and the second monomer are more than or equal to 100, and less than or equal to 800. The first monomer is less than or equal to 50% of the second monomer by weight. A method for making the interpenetrating polymer network is also provided. ## Claims ### Claim 1 An interpenetrating polymer network comprising: segments, the interpenetrating polymer network being formed by polymerizing a first monomer with a second monomer under an initiator, wherein each “R1”, “R2” and “R3” comprises —C═C— group or —C≡C— group; the “R4” is an alkyl group or a hydrogen atom; the “m” and “n” are integers; a molecular weight of the first monomer or the second monomer is greater than or equal to 100 and less than or equal to 800; and the first monomer is less than or equal to 50% of the second monomer by weight. ### Claim 2 (depends on 1) The interpenetrating polymer network of claim 1, wherein each “R1”, “R2” and “R3” comprises an unsaturated chain hydrocarbon group or an unsaturated chain hydrocarbon group with carbonyl. ### Claim 3 (depends on 2) The interpenetrating polymer network of claim 2, wherein each “R1”, “R2” and “R3” comprises ethenyl (—CH═CH2), ethynyl (—C≡CH), allyl (—CH═CH—CH3, or —(CH3)C═CH2), propinyl (—C≡C—CH3), or ethenyl ketonic group ### Claim 4 (depends on 1) The interpenetrating polymer network of claim 1, wherein the molecular weight of the first monomer or the molecular weight of the second monomer is greater than or equal to 200 and less than or equal to 600. ### Claim 5 (depends on 1) The interpenetrating polymer network of claim 1, wherein the initiator is a photo-initiator or a thermo-initiator. ### Claim 6 (depends on 1) The interpenetrating polymer network of claim 1, wherein the first monomer is polyethyleneglycol (200) dimethacrylate, the second monomer is methoxy polyethylene glycol (350) monoacrylate, the initiator is dimethylol propionic acid, and a chemical formula of the interpenetrating polymer network is: wherein, in the chemical formula, “” represents and all of the subscripts a, b, c, x, y, z, o, p, and q are integers. ### Claim 7 (depends on 1) The interpenetrating polymer network of claim 1, wherein a molecular structure of the interpenetrating polymer network is a linear and open loop structure. ### Claim 8 (depends on 7) The interpenetrating polymer network of claim 7, wherein the molecular structure of the interpenetrating polymer network is a branched structure. ### Claim 9 A method for making an interpenetrating polymer network, comprising: providing a first monomer, a second monomer and an initiator, wherein the first monomer is the second monomer is each “R1”, “R2” and “R3” comprises —C═C— group or —C≡C— group, “R4” is an alkyl group or a hydrogen (H), “m” and “n” respectively represents an integer number, and a molecular weight of the first monomer or the second monomer is greater than or equal to 100 and less than or equal to 800; mixing the first monomer, the second monomer and the initiator to form a mixture, wherein the first monomer in the mixture is less than or equal to 50% of the second monomer by weight; and polymerizing the first monomer with the second monomer to form the interpenetrating polymer network. ### Claim 10 (depends on 9) The method of claim 9, wherein each “R1”, “R2” and “R3” comprises an unsaturated chain hydrocarbon group or an unsaturated chain hydrocarbon group with carbonyl. ### Claim 11 (depends on 10) The method of claim 10, wherein each “R1”, “R2” and “R3” comprises ethenyl (—CH═CH2), ethynyl (—C≡CH), allyl (—CH═CH—CH3, or —(CH3)—C═CH2), propinyl (—C≡C—CH3), or ethenyl ketonic group ### Claim 12 (depends on 9) The method of claim 9, wherein the molecular weight of the first monomer or the molecular weight of the second monomer is greater than or equal to 200 and less than or equal to 600. ### Claim 13 (depends on 9) The method of claim 9, wherein the initiator is a photo-initiator selected from the group consisting of 1-hydroxy-cyclohexyl phenyl ketone, 2-methyl-1-[4-(methylthio)-phenyl]-2-morpholino-propiopheno, and dimethylol propionic acid. ### Claim 14 (depends on 13) The method of claim 13, wherein the polymerizing the first monomer with the second monomer to form the interpenetrating polymer network comprises a step of: putting the mixture into a protective gas, and using UV light to irradiate the mixture for a period to polymerize the first monomer with the second monomer under the photo-initiator. ### Claim 15 (depends on 14) The method of claim 14, wherein the protective gas is nitrogen gas, helium gas, neon gas, argon gas, krypton gas or xenon gas. ### Claim 16 (depends on 14) The method of claim 14, wherein the period is in a range from about 30 minutes to about 2 hours. ### Claim 17 (depends on 14) The method of claim 14, wherein the mixing the first monomer, the second monomer and the initiator to form the mixture comprises steps of mixing polyethyleneglycol (200) dimethacrylate with methoxy polyethylene glycol (350) monoacrylate with a predetermined ratio to form a middle mixture, and then adding lithium perchlorate and dimethylol propionic acid into the middle mixture. ### Claim 18 (depends on 9) The method of claim 9, wherein the initiator is a thermo-initiator selected from the group consisting of chloride gas, bromine gas, organic peroxide, and azo initiator. ### Claim 19 (depends on 18) The method of claim 18, wherein the polymerizing the first monomer with the second monomer to form the interpenetrating polymer network comprises steps of: putting the mixture into a protective gas; and heating the mixture at a temperature for a period, to polymerize the first monomer with the second monomer under the thermo-initiator. ### Claim 20 (depends on 19) The method of claim 19, wherein the temperature ranges from about 40 centigrade degrees to about 80 centigrade degrees, the period ranges from about 0.5 hours to about 24 hours.