Thermoplastic hot melt adhesive
US5169890A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1991 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Oct 11, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a thermoplastic hot melt adhesive comprising PA1 (a) a block copolymer, said block copolymer being prepared utilizing a bromide based coupling agent, said block copolymer comprising at least two monoalkenyl arene polymer end blocks A and at least one elastomeric conjugated diene polymer mid block B, and said block copolymer having about 8 to about 65 percent by weight of said monoalkenyl arene polymer block content, each polymer block A having an average molecular weight of between about 5,000 and about 125,000, and each polymer block B having an average molecular weight of between about 10,000 and about 300,000, PA1 (b) a polyisobutylene rubber, PA1 (c) a partially cross-linked polyisobutylene rubber PA1 (d) a compatible tackifying resin, PA1 (e) a phenolic antioxidant, PA1 (f) a non-reactive phenolic resin, PA1 (g) a fluorocarbon surface active agent, and PA1 (h) a petroleum derived wax.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.