Hot melt pressure sensitive adhesives

Details Hot melt pressure sensitive adhesives Hot melt pressure sensitive adhesives

1987-01-12

1988-08-09

Ziegler, Jacob

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525217, 560166, 604358, C08L 3308, C08L 3310, C08L 7504

Patent

active

047628880

ABSTRACT:
What is disclosed are novel hot melt adhesives having pressure sensitive properties that are comprised of a combination of two acrylic-based copolymers containing the novel monomer 1(2)-methyl-3-oxa-4-oxo-5-aza-nonyl methacrylate, one of the copolymers being a low glass transition temperature (Tg) copolymer and the other a high Tg copolymer and which hot melt adhesives, by means of reversible hydrogen bond formation and dissociation, possess the reversible properties of providing a strong cohesive strength at ambient temperature but also having a melt viscosity at elevated coating temperatures such that it can be used in hot melt coating equipment; a process for making said hot melt adhesives; and a process for making adhesive tapes and bandages using said adhesives.

REFERENCES:
patent: 4045517 (1977-08-01), Guerin et al.
patent: 4495243 (1985-01-01), Kishi

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