http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-2886928-T3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_943466b36732f72f391a4c91039d4406 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L101-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L51-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F265-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F212-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L25-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F265-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L51-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L25-12 |
| filingDate | 2018-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_32164f8a7a7a2fc2a55f020abbe5d548 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_143f36693447c451c993b0f2c0df328c |
| publicationDate | 2021-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-2886928-T3 |
| titleOfInvention | Process for the production of an impact-modified thermoplastic molding composition with improved processing and impact resistance |
| abstract | A process for the preparation of a thermoplastic molding composition comprising: A: from 5 to 95% by weight, based on the total molding composition, of at least one thermoplastic copolymer A, comprising at least one vinylaromatic monomer A1 and optionally at least one additional ethylenically unsaturated monomer A2; B: 5 to 70% by weight, based on the total molding composition, of at least one graft copolymer B comprising: B1: 50 to 90% by weight, based on graft copolymer B, of at least a graft base B1 obtained by emulsion polymerization of: B11: 70 to 99.9% by weight, based on the graft base B1, of at least one C1-C8 alkyl (meth)acrylate as monomer B11; B12: 0.1 to 10% by weight, based on the graft base B1, of at least the polyfunctional crosslinking monomer B12; B13: 0 to 29.9% by weight, based on the graft base B1, of at least one additional monoethylenically unsaturated copolymerizable monomer B13 different from B11 and B12; wherein the sum of B11, B12 and optional B13 is 100% by weight; and B2: 10 to 50% by weight, based on graft copolymer B, of at least one graft shell B2, which is obtained by emulsion polymerization in the presence of at least one graft base B1 of: B21: of 50 to 100% by weight, based on graft shell B2, of at least one vinylaromatic monomer B21, and B22: 0 to 50% by weight, based on graft shell B2, of at least one ethylenically unsaturated monomer B22; wherein the total sum of the graft base B1 and the graft cover B2 is 100% by weight; C: 0 to 90% by weight, based on the total molding composition, of at least one additional polymeric component C; and K: from 0 to 40% by weight, based on the total molding composition, of at least one additional additive K; wherein the process encompasses the steps of: a) preparation of the at least one grafting base B1 by emulsion polymerization of monomers B11, B12 and optional B13, where at least one surfactant S1 is added; b) preparation of the at least one graft copolymer B by emulsion polymerization of the at least one optional monomer B21 and B22 in the presence of the at least one graft base B1, wherein at least one surfactant S2 is added before, during and/or or after emulsion polymerization, wherein the graft copolymer B is obtained in the form of a latex with an average particle diameter Dw in the range of 60 to 800 nm; and wherein the volume concentration of the total amount of surfactant S2 is in the range of 0.5 to 0.75 mol/m3, based on the volume of the graft copolymer latex particles B; c) precipitation of the graft copolymer B by mixing the graft copolymer latex obtained in step b) with a precipitation solution comprising at least one salt and/or acid; d) mechanical dehydration, optional washing and/or optional drying of the precipitated graft copolymer B obtained in step c); e) mixing the precipitated graft copolymer B obtained in step d) with component A and optionally components C and/or K, obtaining the thermoplastic molding composition. |
| priorityDate | 2017-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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