Water base adhesion promotor for polypropylene and method for coating to polypropylene materials using the promotor
US6262160A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 10, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Feb 10, 2019 |
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: PA1 a grafted polypropylene chloride, which includes a polypropylene chloride moiety and a maleic an-hydride moiety as bonded thereto, and which has a chlorine content of 15.about.25 weight % and a maleic anhydride moiety content of 1.about.5 weight %; PA1 an amine-neutralized water-soluble resin; PA1 a wettability-improving agent; and PA1 water; and is characterized by having: PA2 a combination ratio of 25.about.90 weight % as of the grafted polypropylene chloride to the total of the grafted polypropylene chloride and the amine-neutralized water-soluble resin; PA2 a combination ratio of 2.5.about.6.0 weight % as of the wettability-improving agent to the entirety of the promotor; and PA2 a solid content of 2.about.10 weight % of the entirety of the promotor. The method for coating to polypropylene materials comprises: PA1 a pretreatment step in which a polypropylene material is beforehand washed, and then immersed into the above water base adhesion promotor, and then dried; and PA1 a 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.