Modified polypropylene-based polymer and composition comprising it
US8618215B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2007 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Jan 19, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/24
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A modified polypropylene-based polymer obtained by graft modification of a propylene/α-olefin copolymer with a xylene-soluble portion of at least 40 mass % and no greater than 85 mass %, a xylene-soluble portion (XS) intrinsic viscosity (XSIV) of at least 2.5 dl/g, and an MFR value of no greater than 3.0 g/10 min at 230° C. under a load of 2.16 kg, using an unsaturated carboxylic acid or its derivative, and a flame retardant polyolefin-based resin composition having prescribed contents of a polyolefin-based resin component comprising 60-95 mass % of a polyolefin-based resin and 40-5 mass % of a modified polypropylene-based polymer, and an inorganic flame retardant component comprising an inorganic filler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.