Block copolymer compositions, prepregs, and laminates made therefrom
US11401410B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2020 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Oct 4, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/0212
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A resin composition that allows production of laminated sheets excellent in heat resistance and processability is disclosed. The resin composition comprises: a) a block copolymer, where the block copolymer comprises at least one polymer block comprising polymerized acyclic conjugated diene units, such as butadiene units, and at least one polymer block containing units like a conjugated cyclic diene such as 1,3-cyclohexadiene or monomer units characterized by unit Tg above 100° C., b) a curing initiator, and c) optionally diene-based polymer selected from a polybutadiene polymer and the copolymer of butadiene with styrene or other styrenic monomers, c) optional additives comprising but not limited to a multi-functional co-curable additive, a diene based rubber, a halogenated or non halogenated flame retardant, an inorganic or organic filler or fiber, an antioxidant, a adhesion promotor, a film forming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.