Water base adhesion promotor for polypropylene and method for coating to polypropylene materials using the promotor
US6479163B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2001 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Jun 24, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The water base adhesion promotor 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 polypropylene 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 a polypropylene material is beforehand washed, and then immersed into the above water base adhesion promotor, 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.