Compositions comprising linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon are provided improved melt stability upon incorporation of a stabilizing quantity of the reaction product of an oxy-bridged zinc-aluminum compound and an acidic polymer containing moieties of an .alpha.-olefin and an .alpha.,.beta.-ethylenically unsaturated carboxylic acid.

An apparatus for improving the homogeneity of molten heat sensitive polymers when the flow thereof is substantially laminar. The apparatus has a tubular housing into which is snugly fitted a first helical member, and into which is disposed a second helical member of such size as to fit inside the first helical member.

Polymer blends of improved properties are produced by uniformly mixing a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon, and a copolymer of a vinyl aromatic monomer and an alkenyl nitrile.

There is provided a compatibilizer comprised of essentially linear molecules terminated with an unsaturated radical on one end and a condensable radical on the other end and represented by general formula: wherein X is a tetravelent organic or silicon containing group; R.sup.1 is selected from the group consisting of C.sub.1-12 alkyl and C.sub.2-12 alkenyl; R.sup.2 is a C.sub.1-10 alkylamine; "a" is less than 4 and greater than or equal to 1; "b" is less than 4 and greater than or equal to 1; an...

Absorbing polymer consisting of a polymer A which is an optionally modified polyvinyl alcohol or an optionally modified polysaccharide or a mixture of these, and of a polymer B which is a maleic anhydride homo- or copolymer having a hydrolysis time of 5 to 120 minutes, the anhydride groups being open and 0.005 to 5 mol % of the acid functions being esterified with hydroxyl groups of polymer A, and the remaining acid functions being present as free acid groups, as salts or as acid amide groups, a...

A novel composition is disclosed which contains a silicone polymer, a non-silicone polymer other than polytetrafluoroethylene and a chemically treated filler. The non-silicone polymer may be an elastomer or a thermoplastic such as a polyolefin, a copolymer containing an olefin, a halogen-containing polymer or copolymer or a copolymer of fluorine-containing polymers other than polytetrafluoroethylene. The filler is an inorganic silicon-containing compound having a surface area of at least 40 squa...

The invention relates to novel multimodal polyethylene polymers comprising a low molecular weight fraction and a high molecular weight fraction, and having a MFR.sub.5 of greater than 0.10 g/10 min and less than or equal to 0.22 g/10 min, and a density of greater than equal to 952 kg/m.sup.3. The invention also relates to uses of the novel polymers in the production of polymeric articles, especially pipes.

A polymer actuator is provided. The polymer actuator includes a plurality of gel/electrode complexes arranged in an electrolytic solution, wherein the gel/electrode complex is composed of a polymeric hydrogel containing acidic or basic functional groups and electrodes placed in the polymeric hydrogel, such that it changes in volume upon application of a voltage across said electrodes. The polymer actuator expands and contracts in the linear direction without curved deformation. The polymer actua...

A biodegradable polymer is disclosed having the composition g) from 8 to 80% by weight of a starch modified to include an hydroxyalkyl C.sub.2-6 group or modified by reaction with an anhydride of a dicarboxylic acid, preferably hydroxypropylated high amylose starch, a) from 0 to 87.9% of starch, b) from 4 to 11% by weight of a water soluble polymer selected from polyvinylacetate, polyvinyl alcohol and copolymers of ethylene and vinylalcohol which have a melting point compatible with the molten s...

A method of preparing a (meth)acrylate functionalized polymer comprising the steps of mixing together a monofunctional vinylic monomer with from 0.3-100% w/w (based on monofunctional monomer) of a polyfunctional vinylic monomer and from 0.0001-50% w/w of a chain transfer agent, reacting said mixture to form a polymer and terminating the polymerization reaction before 99% conversion. The resulting polymers are useful as components of surface coatings and inks, as moulding resins or in curable com...