Societe Nationale Industrielle Et Aerospatiale

Bostik Findley, Inc.

Jean-Jacques Villenave

Daniel Beziers

Evelyne Chataignier

Claude Filliatre

Eric Papon

Christian Servens

Philippe Tordjeman

Veronique Dazens

The invention relates to polyurethane having improved shear strength which are obtained by polycondensation of a mixture of at least one polyol containing one or more polyether grafts and at least one short-chain alcohol with at least one diisocyanate. The invention also relates to the polyurethanes which are in the form of strips whose thickness is between 0.1 and 10 mm. The invention also relates to articles comprising the said polyurethanes.

Polyurethane adhesive with high shearing resistance

The invention relates to the production of composite materials having a fibrous reinforcement and matrix obtained by the polymerization of acrylic monomers. These acrylic monomers are tetraacrylates of formula: ##STR1## in which R.sup.1 and R.sup.2, which can be the same or different, represent H or CH.sub.3, and Z is a divalent group having 1 or 2 aromatic or aliphatic cycles. For example, Z is a group derived from bisphenol A and R.sup.1 and R.sup.2 represent H. The composite materials can be prepared by injection moulding.

Composite material having a fibrous reinforcement and matrix obtained by

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Gradignan, France

Jean-Jacques Villenave