Patent · US Active

Block copolymer blend adhesives with multiple tackifiers

US9458359B2 · kind B2 · utility

0Cited by

31References

15Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Kenneth J. Hanley · Eagan, US
Jay M. Jennen · Forest Lake, US
James D. LaPerre · River Falls, US
Gregory B. Gadbois · Woodville, US
Robert D. Waid · Oakdale, US
Panu K. Zoller · River Falls, US

Key dates

Filing date	Nov 15, 2007
Grant date	Oct 4, 2016
Priority date	—
Expiry date	Nov 15, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31931
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Pressure sensitive adhesives comprising a linear block copolymer having a rubbery block and at least one glassy block; a multi-arm block copolymer having at least three arms, each having both a rubbery block and a glassy block; a first high glass transition temperature tackifier compatible with the rubbery blocks; a second high glass transition temperature tackifier having compatible with the glassy blocks; and at least one of a low Tg tackifier, a plasticizer, and combinations thereof, are disclosed. Tapes that include such adhesive, methods of making such tapes, and bonded composites using such adhesives and tapes are also disclosed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.