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AssigneeRohm and Haas Company
InventorsCarlos Alfonso Cruz, Eugene Patrick Dougherty
Estimating the term…
Disclosed are compositions and processes for preparing polymeric materials having polymerizable units derived from at least one C8 to C30 alkyl (meth)acrylate monomer, and at least one chain branching unit. The presence of the chain branching unit suprisingly results in the polymeric composition having non-gelled polymer chains. The polymeric compositions are useful as additives for improving the melt strength of thermoplastic resins.
A polymeric composition, comprising:
A polymer blend composition, comprising at least the following:
Dependencies are inferred from the claim text.
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Not modified by chemical after-treatment: homopolymers or copolymers of propene
With acrylic or methacrylic acids: c4-acrylate, e.g. butyl acrylate, isobutyl acrylate or tert-butyl acrylate
With acrylic or methacrylic acids: c12-acrylate, e.g. lauryl acrylate
Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined…
Term ended 16 Mar 2022 (estimated)
The present invention relates to non-gelling high polymer compositions. The present invention also relates to polymer blend compositions which contain non-gelling, high molecular weight polymer compositions and thermoplastic polymer resins. The present invention further relates to processes for increasing the melt strength of thermoplastic polymer resins using non-gelling, high molecular weight polymer compositions. The present invention even further relates to processes for preparing non-gelling, high molecular weight polymer compositions and polymer blend compositions containing the same.
Thermoplastic polymer resins are used to prepare numerous articles of commerce. Similarly, there are many polymer melt processing methods used for fashioning articles from thermoplastic polymer resins.
While certain polymer melt processing methods require molten polymer resins that are fluid in nature and flow readily, other polymer melt processing methods require molten polymer resins that resist flow. Such molten polymer resins that resist flow are deemed to have a high melt strength.
TABLE Materials Used in the Examples Generic Name Abbrev. Source Methyl methacrylate MMA Rohm and Haas Co. n-butyl acrylate BA ″ Lauryl methacrylate LMA RohMax Inc. (Houston, TX) n-Butyl methacrylate BMA Rohm and Haas Co. Glacial methacrylic acid MAA ″ allyl methacrylate ALMA Aldrich trimethylolpropane triacrylate TMPTA ″ Styrene STY Huntsman Chemical Fatty alcohol Ether Sulfate, FES-32 Henkel Corporation Sodium Salt Solution (Ambler, PA) Sodium dodecyl benzene sulfonate SDDBS Stepan Company (Northfield, IL) nonionic surfactant XN-45S Union Carbide (Bound Brook, NJ) n-dodecyl mercaptan nDDM Aldrich Sodium carbonate Na2CO3 ″ Calcium chloride CaCl2 ″ t-butyl hydroperoxide tBHP ″ t-amyl hydrogen peroxide tAHP AtoFina cumene hydroperoxide CHP ″ sodium persulfate NaPS ″ Isoascorbic acid IAA ″ Polypropylene copolymer PP-14SO5A Huntsman Neat Polypropylene PP-6310 Huntsman Methyl beta cyclodextrin solution CD Wacker Biochem Corp. (Adrian, MI) Phenolic stabilizer GP45 Great Lakes Chemical Phenolic stabilizer PP-18 ″ Ferric monosodium Fe-EDTA Lidochem, NJ ethylenediaminetetra- (Hazlet, NJ) acetate dihydrate
A variety of different examples provided herein show the manufacture of such additive materials most effectively by the novel emulsion polymerization techniques of the present invention. Single-stage emulsion polymerizations are quite effective. Additives so produced can be freeze-dried and then compounded with polypropylene or, alternatively, compounded directly with the polyolefin in a device like a devolatilizing extruder to remove the water.
Certain additives can be used in combination with each other as blends. In particular, reactive blends of two emulsions, one with an acidic functionality and the other with an epoxide functionality, can be used to obtain very efficient sag resistance when added together to a polyolefin.