Polymer blends
AssigneeBP Chemicals Limited
InventorJames Graham Bonner
Life of this patent
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Abstract
A polymer blend comprises a polyketone and a high density polyethylene (HDPE) optionally grafted with at least one polymerisable ethylenically unsaturated carboxylic acid or derivative thereof. Such blends have good barrier properties and are suitable for packaging applications.
Claims13
A polymer blend comprising a linear polyketone having an alternating structure of (a) units prepared from carbon monoxide and (b) units prepared from one or more olefinically unsaturated compounds, and a high density polyethylene (HDPE) optionally grafted with at least one polymerisable ethylenically unsaturated carboxylic acid or compound selected from the group consisting of acrylic acid, methacrylic acid, maleic acid, itaconic acid, citraconic acid, mesaconic acid, maleic anhydride, 4-methyl cyclohex-4-ene-1,2-dicarboxylic acid anhydride, bicyclo (2.2.2) oct-5-ere-2,3-dicarboxylic acid anhydride, 1,2,3,4,5,8,9,10-octahydronaphthalene-2,4 dicarboxylic acid anhydride, 2-oxa-1,3-diketospiro (4,4) non-7-ene, bicyclo (2.2.1) hept-5-ene 2,3-dicarboxylic acid anhydride, maleopimaric acid, tetrahydrophthalic anhydride, x-methyl-bicyclo (2.2.1)-hept-5-ene-2,3-dicarboxylic acid anhydride, x-methyl-norborn-5-ene-2,3 dicarboxylic acid anhydride, norborn-5-ene,2,3,-dicarboxylic acid anhydride and mixtures thereof.
A polymer-based container suitable for use with food or beverages wherein the polymer comprises a linear blend of a polyketone having an alternating structure of (a) units prepared from carbon monoxide and (b) units prepared from one or more olenfinically unsaturated compounds, and HDPE optionally grafted with at least one polymerisable ethylenically unsaturated carboxylic acid or compound selected from the group consisting of acrylic acid, methacrylic acid, maleic acid, itaconic acid, citraconic acid, mesaconic acid, maleic anhydride, 4-methyl cyclohex-4-ene-1,2-dicarboxylic acid anhydride, bicyclo (2.2.2) oct-5-ene-2,3-dicarboxylic acid anhydride, 1,2,3,4,5,8,9,10-octahydronaphthalene-2,4 dicarboxylic acid anhydride, 2-oxa-1, 3-diketospiro (4.4) non-7-ene, bicyclo (2.2.1) hept-5-ene-2,3-dicarboxylic acid anhydride, maleopimaric acid, tetrahydrophthalic anhydride, x-methyl-bicyclo (2.2.1) hept-5-ene-2 ,3-dicarboxylic acid anhydride, x-methyl-norborn-5-ene-2,3 dicarboxylic acid anhydride, norborn-5-ene,2,3,-dicarboxylic acid anhydride and mixtures thereof.
A polymer blend comprised of (i) a linear polyketone having predominantly an alternating structure of units prepared from carbon monoxide and units prepared from one or more olefinically unsaturated compounds and (ii) a high density polyethylene (HDPE) optionally grafted with at least one polymerisable ethylenically unsaturated carboxylic acid or compound selected from the group consisting of acrylic acid, methacrylic acid, maleic acid, itaconic acid, citraconic acid, mesaconic acid, maleic anhydride, 4-methyl cyclohex-4-ene-1,2-dicarboxylic acid anhydride, bicyclo (2.2.2) oct-5-ene-2,3-dicarboxylic acid anhydride, 1,2,3,4,5,8,9,10-octahydronaphthalene-2,4 dicarboxylic acid anhydride, 2-oxa-1, 3-diketospiro (4.4) non-7-ene, bicyclo (2.2-1) hept-5-ene-2,3-dicarboxylic acid anhydride, maleopimaric acid, tetrahydrophthalic anhydride, x-methyl-bicyclo (2.2.1) hept-5-ene-2,3-dicarboxylic acid anhydride, x-methyl-norborn-5-ene-2,3 dicarboxylic acid anhydride, norborn-5-ene,2,3,-dicarboxylic acid anhydride and mixtures thereof and optionally (iii) an antioxidant.
A polymer blend comprising a linear polymer having the formula:
- ##STR2## where the R groups are independently hydrogen or hydrocarbyl groups and m is an integer such that the polymer has a number average molecular weight of up to 1,000,000, and a high density polyethylene (HDPE) optionally, grafted with at least one polymerisable ethylenically unsaturated carboxylic acid or compound selected from the group consisting of acrylic acid, methacrylic acid, maleic acids itaconic acid, citraconic acid, mesaconic acid, maleic anhydride, 4-methyl cyclohex-4-ene-1,2-dicarboxylic acid anhydride, bicyclo (2.2.2) oct-5-ene-2,3-dicarboxylic acid anhydride, 1,2,3,4,5,8,9,10-octahydronaphthalene-2,4 dicarboxylic acid anhydride, 2-oxa-1, 3-diketospiro (4.4) non-7-ene, bicyclo (2.2.1) hept-5-ene-2,3-dicarboxylic acid anhydride, maleopimaric acid, tetrahydrophthalic anhydride, x-methyl-bicyclo (2.2.1) hept-5-ene-2,3-dicarboxylic acid anhydride, x-methyl-norborn-5-ene-2,3 dicarboxylic acid anhydride, norborn-5-ene,2,3,-dicarboxylic acid anhydride and mixtures thereof.
Dependencies are inferred from the claim text.