Patent · US Active

Low-viscosity polyurethane prepolymer with cyclic carbonate end groups and the use thereof in the production of a multi-component adhesive composition

US10472453B2 · kind B2 · utility

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16Claims

0Family size

Assignee

BOSTIK SA · FR

Inventors

Guillaume Michaud · L'Essart Mador, FR
Marjorie Pereira · Chauny, FR
Frederic Simon · Pont-l'Évêque, FR

Key dates

Filing date	Mar 17, 2015
Grant date	Nov 12, 2019
Priority date	—
Expiry date	Mar 17, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K2003/265
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

1) Specific polyurethane prepolymer (PP2) comprising at least two terminal (2-oxo-1,3-dioxolan-4-yl)methyl carbamate groups of low viscosity, its preparation process and its use in the manufacture of an adhesive composition.2) Multicomponent system comprising, as first component (A), a composition comprising at least one such polyurethane prepolymer and, as second component (B), a composition comprising at least one curing agent comprising at least two primary amine (—NH2) groups (B1).3) Process for assembling materials employing the polyurethane prepolymer (PP2) according to the invention.

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