| Patent Number |
Title Of Patent |
Date Issued |
| 6945687 |
Mixing apparatus having a cooled connector |
September 20, 2005 |
| The present invention relates to a mixing apparatus at least composed of a screw-based machine S1 and a screw-based machine S2, where S1 has heating equipment, at least in the plasticizing and homogenizing zone, and where the outlet from S2 has been connected to the screw-containing barr |
| 6852797 |
Method for producing polybutadiene latex with an optimized thermal current profile |
February 8, 2005 |
| A polybutadiene latex is prepared by a process in which butadiene is polymerized by free radical emulsion polymerization in the presence of initiator and, if required, dispersants and further conventional assistants, the polymerization being carried out in the presence of reactive co |
| 6835776 |
Stabilized thermoplastic molding materials |
December 28, 2004 |
| Thermoplastic molding materials containing the following ingredients with regard to components A-F: A) 5-70 wt. % of at least one graft copolymer A) consisting of a rubber elastic base with a glass transition temperature below 0.degree. and a grafted overlay made of a styrene compound an |
| 6835775 |
Thermoplastic molding compounds with improved impact resistance |
December 28, 2004 |
| The graft copolymer made from a1: from 10 to 90% by weight of a particulate graft base A1, made from a particulate emulsion polymer with a glass transition temperature below 0.degree. C. made from a11: from 70 to 100% by weight of butadiene or of at least one C.sub.1-8 -alkyl acryl |
| 6774167 |
Method for reducing cold stress whitening |
August 10, 2004 |
| Undesirable changes in shade brought about by low temperatures (Cold Stress Whitening) in impact-modified thermoplastic molding compositions F which comprise at least one elastomeric graft polymer A and at least one thermoplastic polymer B are reduced by adding from 10 to 200 ppm, based |
| 6723774 |
Method for producing caoutchouc particles |
April 20, 2004 |
| The invention relates to a method for producing caoutchouc particles (K) by means of emulsion polymerisation in the presence of an emulsifier and a polymerisation initiator. Said particles contain A) 80 to 100 wt. % of one or more conjugated diene monomers (A) in relation to (K) and B) 0 |
| 6649117 |
Thermoplastic molding materials |
November 18, 2003 |
| The present invention relates to thermoplastic molding compositions based on ASA (acrylonitrile-styrene-acrylate) with improved flowability and improved extrusion properties. The invention further relates to a process for preparing these thermoplastic molding compositions, their use and |
| 6608139 |
Thermoplastic molding materials |
August 19, 2003 |
| A thermoplastic molding composition, comprising (A) from 20 to 99% by weight of at least one graft copolymer, (B) from 1 to 80% by weight of a copolymer of at least one alpha-olefin and from at least one polar comonomer, with the proviso that the monomers used are not vinyl acetate or |
| 6579937 |
Thermoplastic moulding materials |
June 17, 2003 |
| Thermoplastic molding compositions comprising (A) 5 to 98%-wt., based on components (A) through (E), of at least one elastomeric graft copolymer, (B) 1 to 90%-wt., based on components (A) through (E), of a further copolymer, (C) 1 to 70%-wt., based on components (A) though (D), of a |
| 6566436 |
Molded forms for use in gardening and animal husbandry |
May 20, 2003 |
| The use of a thermoplastic molding composition which is not ABS, comprising, based on the total of the amounts of components A, B, C, and, where appropriate, D, this total being 100% by weight, a: as component A, from 1 to 48% by weight of at least one particulate emulsion polymer whi |
| 6531543 |
Thermoplastic molding compositions based on acrylonitrile-styrene-acrylate polymers |
March 11, 2003 |
| Thermoplastic molding compositions, comprising (A) from 20 to 99% by weight of at least one graft copolymer, (B) from 1 to 80% by weight of a copolymer obtained from at least one alpha-olefin and from at least one polar comonomer, with the proviso that the monomers used are not vinyl a |
| 6518361 |
Thermoplastic molding compositions |
February 11, 2003 |
| Thermoplastic molding compositions are made from A) from 20 to 98% by weight of a particulate graft polymer and a non-elastomeric graft shell B) from 0.5 to 78.5% by weight of a thermoplastic styrene polymer or copolymer C) from 1 to 79% by weight of a second styrene copolymer and |
| 6498232 |
Method for coagulating plastics dispersions using a device with shearing elements |
December 24, 2002 |
| Shear forces are used for essentially salt-free coagulation of plastics dispersions or rubber dispersions. For this, method of use is made of an apparatus with at least one shearing module which has a stator and a rotor arranged within the stator, where the surfaces facing toward one ano |
| 6420483 |
Preparation of impact-modified plastics |
July 16, 2002 |
| The invention relates to a process for preparing an impact-modified plastic, where particles of a crosslinked rubber are produced from a first monomer mixture which has at least 50% by weight of conjugated diene compounds, the rubber particles are added to a second monomer mixture whic |
| 6380306 |
Thermoplastic molding compounds |
April 30, 2002 |
| Thermoplastic molding materials ofA) from 72 to 88.5% by weight of a thermoplastic styrene or .alpha.-methylstyrene polymer or copolymer,B) from 10 to 20% by weight of a first graft polymer having an average particle diameter d.sub.50 from 400 to 600 nm, having an n-butyl acrylate based |
| 6323279 |
Low individual color thermoplastic molding material |
November 27, 2001 |
| A thermoplastic molding composition having little intrinsic color is produced from a graft copolymer and a thermoplastic polymer. The graft copolymer is produced from a soft elastomeric particulate graft base obtained by polymerization of a conjugated diene alone or with a small amou |
| 6232397 |
Molding compounds consisting of a polycarbonate mixture and a siloxane reticular rubber |
May 15, 2001 |
| Molding materials contain, as essential components, an aromatic polycarbonate, a graft polymer based on alkyl acrylates, styrenes and unsaturated nitriles, a copolymer based on styrenes and unsaturated nitrites, a siloxane network rubber, a copolymer of at least two different esters |
| 6187825 |
Method and device for the continuous coagulation of aqueous dispersions of graft rubbers |
February 13, 2001 |
| A process for the continuous coagulation of aqueous dispersions of graft rubbers suitable for toughening thermoplastics is described. In the process, dispersions are transported through an apparatus having at least one shear element with a slotted stator and a rotating of the rotor withi |
| 6177517 |
Thermoplastic molding masses based on graft copolymers and block polymers |
January 23, 2001 |
| Thermoplastic molding masses made of thermoplastic polymers obtained by mixed graft polymerization and having a glass transition temperature above 20 C., and of special rubber-elastic block copolymers, are characterized by a balanced spectrum of properties. |
| 6174958 |
Thermoplastic moulded materials based on polycarbonates and styrene/acrylonitrile polymers which |
January 16, 2001 |
| Thermoplastic molding materials containA) polycarbonatesB) elastomeric graft copolymers,C+D) two different, thermoplastic copolymers based on styrene or .alpha.-methylstyrene,E) copolymers based on alkyl(meth)acrylate andF) polymeric, OH-containing compounds. |
| 6165399 |
Process for producing thermoplastics |
December 26, 2000 |
| A process for preparing thermoplastics or polymer blends comprising (A) from 5 to 95% of a water-moist elastomer component containing up to 60% of residual water, (B) from 5 to 95% of a thermoplastic polymer, (C) from 0 to 95% of a further polymer, and (D) from 0 to 70% of additives, sai |
| 6162867 |
Thermoplastic moulding compounds |
December 19, 2000 |
| The invention relates to thermoplastic molding compositions comprisingA) from 30 to 98% by weight of a graft copolymer comprisinga.sub.K) from 30 to 90% by weight of an elastomeric graft core,a.sub.S) from 10 to 70% by weight of a graft shell comprisinga.sub.S /1) from 50 to 100% by weight of a styr |
| 6022915 |
Thermoplastic molding compounds and a method of reducing the formation of residual monomers in t |
February 8, 2000 |
| The invention relates to thermoplastic molding compositions consisting ofA) 98-99.995% by weight, based on A+B, of at least one acrylonitrile-containing polymer, andB) 0.005-2% by weight, based on A+B, of .alpha.-tocopherol.The invention also relates to a method for reducing the formation of |
| 5969042 |
Transparent molding materials resistant to stress cracking and having improved toughness/rigidit |
October 19, 1999 |
| Thermoplastic molding materials contain a mixture of(A) a methacrylate polymer,(B) a copolymer of vinylaromatic monomers and vinyl cyanide,(C) a graft copolymer comprising a core and a graft shell and(D) a further graft copolymer comprising a core and a graft shell,the average particle size (d.sub.5 |
| 5969016 |
Molded materials based on polycarbonates |
October 19, 1999 |
| Molding materials containA) from 5 to 97.9% by weight of at least one polycarbonate having a weight average molecular weight (M.sub.w) of from 10,000 to 64,000 g/mol,B) from 1 to 93.9% by weight of at least one graft copolymer,C) from 1 to 93.9% by weight of at least one copolymerc.sub.1) at lea |
| 5958316 |
Preparation of thermoplastics |
September 28, 1999 |
| Toughened thermoplastics are prepared by mechanically dewatering a water-moist elastomer component A containing up to 50% by weight of residual water and mixing the resulting dewatered elastomer component A' with a thermoplastic polymer B in a mixing unit, by a process in which the e |
| 5912305 |
Dulled thermoplastic molding material |
June 15, 1999 |
| Thermoplastic molding materials containA) from 50 to 99% by weight, based on the total weight of the molding material, of a toughened polymer,B) from 1 to 20% by weight, based on the total weight of the molding material, of a blend ofB.sub.1) a copolymer comprising polymerized units which ar |
| 5910276 |
Preparation of thermoplastics |
June 8, 1999 |
| Toughened thermoplastics are prepared by mechanically dewatering a water-moist elastomer component A containing up to 60% by weight of residual water and mixing the resulting dewatered elastomer component A' with a thermoplastic polymer B in an extruder, by a process in which the ela |
| 5907010 |
Graft copolymers of polyarylene ethers, polyamides and copolymers which contain cyclic, .alpha., |
May 25, 1999 |
| Graft copolymers are obtainable by reactingA) polyarylene ethers,B) polyamides andC) copolymers which contain cyclic, .alpha.,.beta.-unsaturated dicarboxylic anhydridesand are used for the preparation of thermoplastic molding materials or as compatibilizers for polymer blends based on polyar |
| 5889111 |
Elastomeric graft polymeres |
March 30, 1999 |
| Particulate elastomeric graft polymers which are suitable for improving the quality of macromolecular base materials B consist ofa) a grafting core comprising an elastomeric polymer P.sub.K, the particles having a mean particle diameter of from 1 to 150 .mu.m, andb) one or more shells, the o |
| 5877258 |
Thermoplastic molding materials |
March 2, 1999 |
| Thermoplastic molding materials compriseA) from 30 to 98% by weight of a graft polymer ofa.sub.K) from 30 to 90% by weight of an elastomeric graft core, obtainable by copolymerization ofa.sub.K /1) from 80 to 99.99% by weight of a C.sub.1 -C.sub.10 -alkyl ester of acrylic acid,a.sub.K /2) fr |
| 5877242 |
.alpha.tocopherol-stabilized styrene/butadiene block copolymers |
March 2, 1999 |
| A molding material comprises styrene/butadiene block copolymers obtainable by anionic polymerization and from 0.01 to 1% by weight, based on the polymer, of .alpha.-tocopherol. |
| 5852113 |
Preparation of thermoplastics |
December 22, 1998 |
| Toughened thermoplastics are prepared by mixing a water-moist elastomer component A containing up to 60% by weight of residual water with a thermoplastic polymer B and further polymers C and additives D in an extruder with mechanical dewatering of the elastomer component A, by a proc |
| 5851463 |
Preparation of thermoplastics |
December 22, 1998 |
| Toughened thermoplastics are prepared by mechanically dewatering a water-moist elastomer component A containing up to 50% by weight of residual water and mixing the resulting dewatered elastomer component A' with a thermoplastic polymer B in a mixing unit, by a process in which the e |
| 5837772 |
Dulled thermoplastic molding materials |
November 17, 1998 |
| Thermoplastic molding materials containA) from 50 to 99% by weight, based on the total weight of the molding material, of a toughened polymer,B) from 1 to 20% by weight, based on the total weight of the molding material, of a blend ofB.sub.1) a copolymer comprising polymerized units which ar |
| 5834550 |
Dull thermoplastic molding material |
November 10, 1998 |
| Thermoplastic molding materials which contain from 0.1 to 10% by weight of a compound of a polyvalent metal are suitable for the production of dull moldings having high impact strength. |
| 5817266 |
Dewatering of water-moist graft rubber |
October 6, 1998 |
| Essentially dry materials are obtained by mechanically dewatering water-moist rubber, prepared by emulsion polymerization and precipitation, to give a compact material having a rubber content of at least 50%, by a process in which the previously dewatered rubber is fed to the feed se |
| 5760134 |
Thermoplastic molding materials |
June 2, 1998 |
| Thermoplastic molding materials ofA) from 30 to 98% by weight of a graft polymer ofa.sub.c) from 30 to 90% by weight of an elastomeric graft core anda.sub.s) from 10 to 70% by weight of a graft shell,B) from 1 to 50% by weight of a thermoplastic polymer,C) from 1 to 70% by weight of an elastomeric b |
| 5747568 |
Thermoplastic molding material |
May 5, 1998 |
| A thermoplastic molding material consists ofA) 30-80% by weight, based on A+B, of an elastomeric grafting base A defined in more detailandB) 20-70% by weight, based on A+B, of a shell grafted onto the grafting base A and defined in more detailandC) 0.001-1 part by weight, based on 100 parts |
| 5717033 |
Dull, transparent thermoplastic resins |
February 10, 1998 |
| A particulate polymer A having a mean particle size of less than 1000 nm consists ofa1: up to 99.8% by weight of at least one vinylaromatic monomer a1,a2: up to 99.8% by weight of at least one alkyl methacrylate a2 where the alkyl radical is of 1 to 8 carbon atoms,a3: up to 50% by weight of |
| 5710197 |
Crosslinked polymer particles containing a fluorescent dye |
January 20, 1998 |
| Fluorescent pigments contain essentially a polymer matrix based on polymethyl methacrylate and a nonpolar fluorescent dye from the coumarin or perylene series, the polymer matrix being a crosslinked polymethacrylate or polyacrylate prepared by suspension polymerization. |
| 5631323 |
Composition of styrene-acrylonitrile copolymer matrix with particles of graft copolymer and cros |
May 20, 1997 |
| Thermoplastic molding materials preparedA) from 35 to 99.5% by weight of a matrix copolymer (A) ofa.sub.1) from 50 to 95% by weight of styrene and/or .alpha.-methylstyrene,a.sub.2) from 5 to 50% by weight of acrylonitrile anda.sub.3) from 0 to 20% by weight of further comonomersB) from 0 to 50% by w |
| 5576385 |
Transparent, impact-resistant molding materials having high stress cracking resistance and a dul |
November 19, 1996 |
| Thermoplastic molding materials containing a mixture of(A) from 15 to 70% by weight of a methacrylate polymer,(B) from 10 to 50% by weight of a copolymer obtained by polymerization of a mixture of(B1) a vinylaromatic monomer and(B2) a vinyl cyanide,(C) from 20 to 50% by weight of a graft copolym |
