Waterproofing membrane from epoxy resin and amine-terminated polyamide
US6395845B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1998 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Dec 15, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G59/54
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to thermoset epoxy resin waterproofing membranes for structures such as roofs comprising:(a) one or more epoxy resin(s) having an average of at least 1.5 epoxy groups per molecule;(b) a liquid amine terminated polyamide prepared by reacting at least one C18-50 dicarboxylic acid and an aminoalkylpiperazine in a ratio of moles of aminoalkylpiperazine to equivalents of carboxyl group in the acid of greater than 0.75:1;(c) one or more optional polyamine(s);(d) one or more optional filler(s); and(e) one or more optional modifying resin(s)wherein the tensile modulus of the thermoset epoxy waterproofing membranes is less than 200,000 psi and the tensile elongation of the thermoset epoxy waterproofing membranes is greater than 20%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.