Water base adhesion promotor for polypropylene and method for coating to polypropylene materials using the promotor
US6447844B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 9, 2000 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Feb 9, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The water base adhesion promotos for polypropylene comprises:a grafted polypropylene chloride, which includes a polypropylene chloride moiety and a maleic anhydride moiety as bonded thereto, and which has a chlorine content of 15˜25 weight % and a maleic anhydride moiety content of 1˜5 weight %;an amine-neutralized water-soluble resin;a wettability-improving agent; andwater;and is characterized by having:a combination ratio of 25˜90 weight % as of the grafted polypropylene chloride to the total of the grafted polypopylene chloride and the amine-neutralized water-soluble resin;a combination ratio of 2.5˜6.0 weight % as of the wettability-improving agent to the entirety of the promotor; anda solid content of 2˜10 weight % of the entirety of the promotor. The method for coating to polypropylene materials comprises:a pretreatment step in which the polypropylene material is beforehand cleaned and then the above water base adhesion promotor is applied, and then dried; anda coating step in which a paint is coated to the material after the pretreatment step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.