Patent · US Active

Use of thermally stable terpene-phenol resins

US12043767B2 · kind B2 · utility

0Cited by

2References

7Claims

0Family size

Assignee

tesa SE · DE

Inventors

Manfred Spies · Bad Bramstedt, DE
Yuan-Hong Li · Wang'an Town, TW

Key dates

Filing date	Jan 6, 2020
Grant date	Jul 23, 2024
Priority date	—
Expiry date	Jul 17, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2261/3424
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

If at least one terpene-phenol resin is used as tackifying resin for pressure-sensitive adhesives based on polar framework polymers, wherein the at least one terpene-phenol resin in gel permeation chromatography analysis shows a multimodal molar mass distribution wherein the low molecular weight peak has its maximum within a range above 260 g/mol, it is possible, even at elevated temperatures, to achieve elevated storage stability of the terpene-phenol resins, apparent from a distinct reduction in increases in softening points over time.

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