Process for making high-performance polyethylene multifilament yarn
AssigneeDsm IP Assets B.V.
InventorsIlse VAN CASTEREN, Gerardus Cornelis OVERBEEK, Ronald TENNEBROEK, Tijs NABUURS, Richard George COOGAN
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Abstract
An aqueous solution coating composition comprising an autoxidisable polyvinyl polymer having ≧20% of fatty acid residue by weight of polymer; Tg from −60 to +15° C.; acid value of 15 to 75 mg KOH/g, Mw from 2500 to 100000 g/mol; polydispersity ≦30, said composition having ≦25% co-solvent by weight of solids, ≧30% solids by weight of composition; said composition when in the form of a coating having a telegraphing value defined as the difference in gloss at a 20° angle of between a film cast on rough PVC and a film cast on smooth PVC of 10 gloss units.
Claims18
An aqueous coating composition that comprises an autoxidisable polymer that comprises plurality of vinyl groups where:
- I) said autoxidisable polyvinyl polymer has:
- i) fatty acid residue in an amount greater than or equal to 20% by weight of said autoxidisable polyvinyl polymer
- ii) a glass transition temperature (Tg)from −60° C. to +20° C.;
- iii) an acid value from 5 to 75, optionally from 15 to 75 mg KOH/g;
- iv) a weight average molecular weight (Mw) from 2500 to 100000 g/mol;
- and
- v) a polydispersity (PDi) less than or equal to 30;
- II) said composition has:
- a) a co-solvent content less that 25% by weight of solids;
- b) a solids content greater than or equal to 30% by the total weight of said composition;
- and
- III) said composition when in the form of the film has a telegraphing value of less than 10 gloss units,
- where the telegraphing value is the difference between an initial smooth gloss value minus an initial rough gloss value of the film, where the initial smooth gloss value is the gloss when the film is cast on smooth PVC (Rz=1 μm [±0.25 μm]);
- the initial rough gloss value is the gloss when the film is cast on rough PVC (Rz=25 microns [μm] [±5 μm]);
- and where
- each film has a dry film thickness of 52 μm [±6 μm];
- and
- each initial gloss value is measured at a 20° angle, one day (24 hours) after the film has been cast.
Dependencies are inferred from the claim text.