Patent · US Active

Adhesive tape for protecting surfaces

US10125293B2 · kind B2 · utility

0Cited by

3References

8Claims

0Family size

Assignee

tesa SE · DE

Inventors

Maike STREBL · Hamburg, DE
Patrick Kerep · Hamburg, DE
Tobias Blömker · Cuxhaven, DE
Kerstin KLINGEBERG · Hamburg, DE

Key dates

Filing date	Jun 11, 2015
Grant date	Nov 13, 2018
Priority date	—
Expiry date	Jun 11, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09J2475/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to an extensively biologically degradable adhesive tape, which in particular has a good and quickly established anchoring between the adhesive and the carrier. The invention relates to an adhesive tape for protecting surfaces, comprising an adhesive H, containing at least 60 wt %, at least one polyurethane P, obtainable from chemical cross-linking of a polyurethane pre-polymer, obtainable from the chemical reaction of d) one or a plurality of aliphatic polyester polyols A having a hydroxy functionality of 1.8 through 2 and a number-averaged molecular weight of equal to/greater than 1,000 g/mole; e) one or a plurality of compounds B having a hydroxy functionality of 1.8 through 2 and a number-averaged molecular weight of less than 1,000 g/mol; f) one or a plurality of aliphatic diisocyanates C; wherein the ratio of the total number of isocyanate groups to the total number of hydroxy groups of the substances involved in the chemical reaction for building the prepolymer is greater than/equal to 0.4 and less than 1; and a biodegradable carrier.

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