摘要:
Segmented copolymers having one or more olefin polymer segments and one or more imide-containing are useful for the modification of polyolefins, of polar polymers, and of blends thereof. The polymers can be produced by imidisation of corresponding olefin polymer/(meth)acrylate ester polymer segmented polymer, preferably in a devolatilizing extruder, in the presence of ammonia or primary amines so producing a polymer having one or more segments of polymer containing cyclic imide groups.
摘要:
Segmented copolymers having one or more olefin polymer segments and one or more imide-containing are useful for the modification of polyolefins, of polar polymers, and of blends thereof. The polymers can be produced by imidisation of corresponding olefin polymer/(meth)acrylate ester polymer segmented polymer, preferably in a devolatilizing extruder, in the presence of ammonia or primary amines so producing a polymer having one or more segments of polymer containing cyclic imide groups.
摘要:
Polymers containing glutarimide units are useful in compatibilizing blends of two or more polymers to improve physical properties, especially modulus and heat distortion values. The polyglutarimides are especially useful when the polymers to be blended are incompatible with each other, but separately compatible with the polyglutarimide. Compatibilization with the polyglutarimide may be enhanced in some cases by a grafting reaction between the polyglutarimide, if it also contains acid or anhydride functionality, and one or more of the polymers to be blended.
摘要:
The adhesion to polyolefin substrates of acrylic-based or other protective polymers, for example in the form of a plastic coating or a latex or solvent-based paint, is improved by use of a segmented copolymer of a polyolefin and a poly(methacrylate) in the form of a laminate or tie-coat adhering to the polyolefin.
摘要:
Reactive copolymers of alkyl methacrylates containing glutaric anhydride units are useful in compatibilizing blends of two or more polymers to improve physical properties of the blend. The reactive copolymers are especially useful when the polymers to be blended are incompatible with each other, but separately compatible with the reactive copolymer. Compatibilization by the reactive copolymer may be enhanced in some cases by catalysis of the grafting reaction between the reactive copolymer and one or more of the polymers to be blended.
摘要:
Adhesion to polyolefin substrates of (meth)acrylic films or laminates or of coatings, inks, or paints is improved by forming a first film or sheet of a multi-stage polymer containing a crosslinked rubbery first-stage, applying the first film or sheet under heat and pressure to a polyolefin sheet or film, wherein the polyolefin is not rubber-modified, separating the two films or sheets mechanically to leave a thin tie-layer of the multi-stage polymer at or near the surface of the polyolefin sheet or film, and then laminating to the so-treated polyolefin sheet or film a (meth)acrylic sheet or film or applying a latex, paint, or ink.
摘要:
Polymers containing glutarimide units are useful in compatibilizing blends of two or more polymers to improve physical properties, especially modulus and heat distortion values. The polyglutarimides are especially useful when the polymers to be blended are incompatible with each other, but separately compatible with the polyglutarimide. Compatibilization with the polyglutarimide may be enhanced in some cases by a grafting reaction between the polyglutarimide, if it also contains acid or anhydride functionality, and one or more of the polymers to be blended.
摘要:
Improved adhesion to a polyolefin substrate, especially polypropylene, of surface layers of acrylic-based or other protective polymers in the form of a plastic film, sheet, or coating or a latex or solvent-based paint, ink, or coating is achieved by use of an intermediate layer, laminate, or veneer of a blend of segmented copolymer of a polyolefin and a poly(methacrylate) which is blended with a core/shell copolymer having a crosslinked rubber core.