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Alliedsignal Inc.

Frank O Grant

Joseph R May

Lev Koller

Polyester and copolyester blends are compatibilized by mechanical addition therewith effective compatibilizing amounts of a non-volatile, solid, low molecular weight copolymer salt of ethylene, acrylic acid, and calcium ion. Such ternary blends are homogeneous as indicated by the increase in tensile impact strength and hardness of the binary polyester and copolyester blends.

Interior automotive parts formed from rigid copolyester blends mixed with a low molecular weight copolyester salt compatibilizer

A cover (10) of integral construction for an air bag comprising: a panel (20) and a hinge (26) formed in a first side (28) of the cover (10) for enabling the panel to rotate thereabout after the panel separates from a seam on the opposite side of the panel in response to forces imparted thereto by an expanding air bag. The seam includes stress enhancing features for increasing stresses in the material causing same to tear and separate. These stress enhancing features includes a laterally extending narrow first portion (42), a closely spaced laterally extending narrow second portion (44) and a thin bridge (46) joining the first and second portions (42,44). The first portion, second portion and bridge are relatively movable one to the other so as to generate in the material at least two zones of increased tensile stress and at least two zones of increased compressive stress sufficient to cause the material to tear.

Air bag door with tear seam

Poly(methyl methacrylate) is plasticized by mechanically blending therewith effective plasticizing amounts of a non-volatile, solid, linear copolymer of butyl acrylate and allyl acrylate. Such blends are miscible as indicated by the lowering of the glass transition temperature of the poly(methyl methacrylate).

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Sylvania, OH, United States of America

Frank O Grant