Patent
Polymer structure repair system
| العنوان: | Polymer structure repair system |
|---|---|
| Patent Number: | 11548,248 |
| تاريخ النشر: | January 10, 2023 |
| Appl. No: | 17/348749 |
| Application Filed: | June 15, 2021 |
| مستخلص: | A system for repairing polymer structures, for example, polypropylene storage tanks for liquid, includes the application of a unique primer in connection with a plurality of layers of other adhesives to attach a liquid-impermeable elastomeric liner. The system permits the liquid-impermeable elastomeric liner to expand and contract along with the polymer tank, thus resisting separation of the liner from the polymer. |
| Inventors: | Murphy, Gary M. (Enon Valley, PA, US) |
| Claim: | 1. A priming compound consisting essentially of: between about 10% and about 30% toluene; between about 10% and about 30% acetone; between about 10% and about 30% methyl ethyl ketone; between about 10% to about 15% tetrahydrofuran; between about 10% to about 15% cyclohexanone; and between about 15% to about 25% a compound consisting essentially of about 35% xylene, about 25% methyl ethyl ketone, about 15% isopropanol, about 10% ethyl benzene, about 5% epoxy resin, about 5% epichlorohydrin, and about 1% ethyl alcohol. |
| Claim: | 2. The priming compound according to claim 1 , wherein the priming compound consists essentially of: about 20% toluene; about 20% acetone; about 20% methyl ethyl ketone; about 10% tetrahydrofuran; about 10% cyclohexanone; and about 20% a compound consisting essentially of about 35% xylene, about 25% methyl ethyl ketone, about 15% isopropanol, about 10% ethyl benzene, about 5% epoxy resin, about 5% epichlorohydrin, and about 1% ethyl alcohol. |
| Claim: | 3. A priming compound consisting essentially of: between about 10% and about 30% toluene; between about 10% and about 30% acetone; between about 13.75% and about 36.25% methyl ethyl ketone; between about 10% to about 15% tetrahydrofuran; between about 10% to about 15% cyclohexanone; between about 5.25% and about 8.75% xylene; between about 2.25% and about 3.75% isopropanol; between about 1.5% and about 2.5% ethyl benzene; between about 0.75% and about 1.25% epoxy resin; between about 0.75% and about 1.25% epichlorohydrin; and between about 0.15% and about 0.25% ethyl alcohol. |
| Claim: | 4. The priming compound of claim 3 , wherein the priming compound consists essentially of: about 20% toluene; about 20% acetone; about 25% methyl ethyl ketone; about 10% tetrahydrofuran; about 10% cyclohexanone; about 7% xylene; about 3% isopropanol; about 2% ethyl benzene; about 1% epoxy resin; about 1% epichlorohydrin; and about 0.2% ethyl alcohol. |
| Claim: | 5. A method of repairing a polymer structure, comprising: applying a first primer to a surface of the polymer structure, the primer consisting essentially of: between about 10% and about 30% toluene; between about 10% and about 30% acetone; between about 10% and about 30% methyl ethyl ketone; between about 10% to about 15% tetrahydrofuran; between about 10% to about 15% cyclohexanone; and between about 15% to about 25% a compound consisting essentially of about 35% xylene, about 25% methyl ethyl ketone, about 15% isopropanol, about 10% ethyl benzene, about 5% epoxy resin, about 5% epichlorohydrin, and about 1% ethyl alcohol; applying a second primer to the first primer, the second primer consisting essentially of about 35% xylene, about 25% methyl ethyl ketone, about 15% isopropanol, about 10% ethyl benzene, about 5% epoxy resin, about 5% epichlorohydrin, and about 1% ethyl alcohol; applying a third primer to the second primer, the third primer consisting essentially of about 95% toluene and about 5% methyl methacrylate; applying a first cement to the third primer; applying a second cement to the first cement; and applying a liquid-impermeable elastomeric liner to the second cement. |
| Claim: | 6. The method according to claim 5 : further comprising abrasive blasting the surface prior to applying the first primer; and wherein the first primer is applied to the surface within about one hour of completion of abrasive blasting. |
| Claim: | 7. The method according to claim 5 , wherein the cement is a either a mixture of toluene and natural isoprene, or a mixture of toluene and butyl isoprene. |
| Claim: | 8. The method according to claim 5 , wherein the liquid-impermeable elastomeric liner is rubber. |
| Patent References Cited: | 20120252944 October 2012 Araki |
| Other References: | Chemlock 289 Material Safety Data Sheet, Lord Corporation, Sep. 21, 2012. cited by applicant Chemlock 290 Material Safety Data Sheet, Lord Corporation, Jun. 18, 2013. cited by applicant Chemlock 289/290 Technical Data, Lord Corporation, 2019. cited by applicant |
| Assistant Examiner: | Lee, Jaeyun |
| Primary Examiner: | Aftergut, Jeffry H |
| Attorney, Agent or Firm: | Lang, IV, William F. Lang Patent Law LLC |
| رقم الانضمام: | edspgr.11548248 |
| قاعدة البيانات: | USPTO Patent Grants |
| الوصف غير متاح. |