Elastomeric, ceramic fiber reinforced polyketone polymer blends

Abstract

A composition comprising a non-miscible blend of, as a major component, a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and lesser amounts of a maleated, partially hydrogenated block copolymer, said block copolymer having at least one at least predominantly polymerized vinyl aromatic compound block and at least one at least predominantly aliphatic polymerized conjugated alkadiene block, and ceramic fiber reinforcement.

What is claimed is: 
     
       1. A composition comprising a non-miscible blend of, as a major component, a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and lesser amounts of a maleated, partially hydrogenated block copolymer, said block copolymer having at least one at least predominantly polymerized vinyl aromatic compound block and at least one at least predominantly polymerized conjugated alkadiene block, and ceramic fiber reinforcement. 
     
     
       2. The composition of claim 1 wherein the linear alternating polymer is represented by the repeating formula ##STR6## wherein G is the moiety of ethylenically unsaturated hydrocarbon of at least 3 carbon atoms polymerized through the ethylenic unsaturation and the ratio of y:x is no more than about 0.5. 
     
     
       3. The composition of claim 2 wherein the maleated partially hydrogenated block copolymer is a maleated block copolymer derived from (1) a block copolymer precursor wherein i) each A block independently is a block of at least predominantly polymerized vinyl aromatic compound selected from styrene or alpha-methylstyrene, the average molecular weight of each A block being from about 5,000 to about 125,000,   ii) each B block independently is a block of at least predominantly polymerized alkadiene selected from butadiene or isoprene, the average molecular weight of each B block being from about 10,000 to about 300,000, and   iii) the A blocks being from about 2% by weight to about 55% by weight of the total block copolymer; and     (2) a partially hydrogenated block copolymer precursor containing residual aliphatic block unsaturation from about 0.5% to about 20% of the unsaturation of the aliphatic block of said block copolymer, said maleated partially hydrogenated block copolymer containing from about 0.02% by weight to about 20% by weight, based on total polymer, of moieties of maleic acid compound grafted to the polymer aliphatic block.   
     
     
       4. The composition of claim 3 wherein the ceramic fiber reinforcement is from about 0.1% by weight to about 45% by weight of the total blend. 
     
     
       5. The composition of claim 4 wherein y is 0. 
     
     
       6. The composition of claim 4 wherein G is a moiety of propylene. 
     
     
       7. The composition of claim 6 wherein the ratio of y:x is from about 0.01 to about 0.1. 
     
     
       8. The composition of claim 6 wherein the vinyl aromatic compound is styrene and the alkadiene is butadiene, and the maleated partially hydrogenated block copolymer is from about 0.5% by weight to about 10% by weight of the total blend. 
     
     
       9. The composition of claim 8 wherein the ceramic fiber reinforcement is from about 0.5% by weight to about 35% by weight based on total blend. 
     
     
       10. The composition of claim 9 wherein the maleated, partially hydrogenated block copolymer is from about 2% by weight to about 7% by weight of the total blend. 
     
     
       11. The composition of claim 10 wherein the ratio of y:x is from about 0.01 to about 0.1. 
     
     
       12. A molded article comprising the composition of claim 1.