GB2118194A - Polymeric blends based on vinyl-aromatic polymers - Google Patents
Polymeric blends based on vinyl-aromatic polymers Download PDFInfo
- Publication number
- GB2118194A GB2118194A GB08308155A GB8308155A GB2118194A GB 2118194 A GB2118194 A GB 2118194A GB 08308155 A GB08308155 A GB 08308155A GB 8308155 A GB8308155 A GB 8308155A GB 2118194 A GB2118194 A GB 2118194A
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- United Kingdom
- Prior art keywords
- aromatic
- weight
- carbon atoms
- vinyl
- polymeric blend
- Prior art date
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- 229920000642 polymer Polymers 0.000 title claims abstract description 30
- 239000000203 mixture Substances 0.000 title claims abstract description 28
- 125000003118 aryl group Chemical group 0.000 claims abstract description 13
- 150000002825 nitriles Chemical class 0.000 claims abstract description 9
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 8
- 239000004417 polycarbonate Substances 0.000 claims abstract description 8
- 229920000728 polyester Polymers 0.000 claims abstract description 7
- 239000011347 resin Substances 0.000 claims abstract description 4
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 14
- 229920001971 elastomer Polymers 0.000 claims description 8
- 239000005060 rubber Substances 0.000 claims description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical group C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 3
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 150000002431 hydrogen Chemical class 0.000 claims description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- 229930185605 Bisphenol Natural products 0.000 claims 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 4
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical class CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- SVHAMPNLOLKSFU-UHFFFAOYSA-N 1,2,2-trichloroethenylbenzene Chemical compound ClC(Cl)=C(Cl)C1=CC=CC=C1 SVHAMPNLOLKSFU-UHFFFAOYSA-N 0.000 description 1
- AUHKVLIZXLBQSR-UHFFFAOYSA-N 1,2-dichloro-3-(1,2,2-trichloroethenyl)benzene Chemical compound ClC(Cl)=C(Cl)C1=CC=CC(Cl)=C1Cl AUHKVLIZXLBQSR-UHFFFAOYSA-N 0.000 description 1
- XPXMCUKPGZUFGR-UHFFFAOYSA-N 1-chloro-2-(1,2,2-trichloroethenyl)benzene Chemical compound ClC(Cl)=C(Cl)C1=CC=CC=C1Cl XPXMCUKPGZUFGR-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- 239000004156 Azodicarbonamide Substances 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 239000004150 EU approved colour Substances 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 229920004142 LEXAN™ Polymers 0.000 description 1
- 239000004418 Lexan Substances 0.000 description 1
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- -1 acrylonitrile Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 1
- 235000019399 azodicarbonamide Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000018984 mastication Effects 0.000 description 1
- 238000010077 mastication Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 1
- 229940006093 opthalmologic coloring agent diagnostic Drugs 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
- C08L25/12—Copolymers of styrene with unsaturated nitriles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Polymeric blends comprise 20-80% by weight of a modified vinyl-aromatic polymer containing from 5 to 15% by weight of an ethylenically unsaturated nitrile, and 80-20% by weight of at least one resin containing aromatic groups selected from certain defined aromatic polycarbonates and certain defined crystalline aromatic polyesters.
Description
SPECIFICATION
Polymeric blends based on vinyl-aromatic polymers
The present invention relates to polymeric blends based on vinyl-aromatic polymers, and more particularly to blends which contains an alkenyl-aromatic resin and are suitable to be transformed into shaped articles by injection moulding extrusion or other known processing techniques for thermoplastic polymers.
From British Patent Application No. 2 067 579 A are known vinyl-aromatic polymers which possess an improved stress cracking resistance and are particularly suitable to be moulded or vacuum shaped.
These vinyl-aromatic polymers modified with rubber are characterized in that they contain from 6 to 12% by weight of an ethylenically unsaturated nitrile, such as acrylonitrile, bound to the two phase system of the polymer, and exhibit the following particular combination of characteristics:
(a) the dispersed elastomeric gel phase insoluble in toluene is not less than 23% by weight;
(b) the swelling index of the elastomeric phase in toluene is greater than 10;
(c) the melt index of the.polymer is at least 1.5 g./1 0 min.;
(d) the bending modulus of the polymer is greater than 1 5,000 kg/cm2;
(e) the torsional modulus of the polymer is greater than 5,500 kg/cm2;
(f) the notched IZOD impact strength at230Cofthe polymer is greater than 7 kg.cm/cm.
The methods of measuring the above-mentioned characteristics are described in the Patent
Application No. 2 067 5i9A.
Such modified vinyl-aromatic polymers are particularly suitable to be used in the production both of refrigerator cells and of other articles obtained by thermoforming the extruded sheets. Such polymers can be easily manufactured by processes which are presently in use. Furthermore, they are compatible both with polystyrol or impact resistant polystyrol, as well as with ABS thermopolymers and styrol/acrylonitrile copolymers (SAN).
Nevertheless, these vinyl-aromatic polymers modified with an ethylenically unsaturated nitrile, and also in general all vinyl-aromatic polymers, have the drawback of having a low heat distorsion temperature so that their thermal resistance is not sufficiently satisfactory to meet the necessary requirements in some fields of application, for example in the automotive industry.
The present invention aims to improve the thermal resistance of vinyl-aromatic polymers modified with an ethylenically unsaturated nitrile, without altering and preferably improving their chemicalphysical properties.
According to the present invention, there is provided a polymeric blend containing: -from 20 to 80% by weight, with respect to the blend, of a modified vinyl-aromatic polymer container from 5 to 1 5% by weight of an ethylenically unsaturated nitrile; -from 80 to 20% by weight, with respect to the blend, of at least one resin containing aromatic groups selected from:
(a) an aromatic polycarbonate having repeating structural units of the formula::
in which R1, R2, R3 and R4 each represents hydrogen or an alkyl radical containing from 1 to 3 carbon atoms, and A represents -0-, -CO-, SO2, an a Ikylene radical containing from 1 to 10 carbon atoms, an alkylidene radical containing from 1 to 10 carbon atoms, a cyclo-alkylene radical containing from 5 to 15 carbon atoms, a cyclo-alkylidene radical containing from 5 to 15 carbon atoms or the radical:
and
(b) a crystalline aromatic polyester obtained by polymerization of a glycol of general formula:
HO-(CH2)n-OH
(II) in which n is an integer from 2 to 10, with a bicarboxylic acid of formula::
HOOC-R5-B-R6-COOH
(III) in which R5 and R6 each represents (CH2) where m is zero or an integer from 1 to 4 and B is a bivalent aromatic radical represented by:
in which D may be: -(CH2)-; -(CH2)0-(CH2)-; (CH2)pO(CH2) -; (CH2)q
where p may be zero or an integer from 1 to 5 and q is an integer from 1 to 5.
The term vinyl-aromatic polymer as used herein is to be understood to include any solid thermoplastic polymer and respective copolymer, essentially consisting of (i.e. containing chemically bound) at least 50% by weight of one or more vinyi-aromatic compounds of general formula:
in which X represents hydrogen or an alkyl radical having from 1 to 4 carbon atoms; Y represents
hydrogen, a halogen or an alkyl radical having from 1 to 4 carbon atoms; and n is zero or an integer from
1 to 5.
Examples of vinyl-aromatic compounds having the formula (IV) are: styrene; methyl styrene; mono-, di-, tri-, tetra-, and penta-chloro-styrene and the respective alpha-methyl-styrenes; styrenes alkylated in the nucleus and the respective alpha-methyl-styrenes such as ortho- and para-methylstyrenes and ortho- and para-ethyl-styrenes; and ortho- and para-alpha-methyl-styrenes. These monomers may be used alone or in admixture with each other.
The term vinyl-aromatic polymers also includes polystyrenes modified with rubbers, which are generally employed to render the polymers impact-resistant.
The rubbers which are generally used for this purpose are polybutadiene, polyisoprene, copolymers of butadiene and/or of isoprene with styrene or with other monomers, having a glass transition temperature (Tg) lower than -200C, or the saturated rubbers such as ethylene-propylene rubbers, ethylene-propylene-diene terpolymers, and siliconic rubbers with unsaturated groups.
The vinyi-aromatic polymers contain from 5 to 15%, and preferably less than "r 10% by weight, of an ethylenically unsaturated nitrile such as acrylonitrile or methacrylonitrile.
The aromatic polycarbonates containing the repeating structural units (I) are well known in the art and are commercially available from different sources, for example General Eiectric Company, Pittsfield,
Mass., USA under the Trade Mark "LEXAN"; or from ANIC of S. Donato Milanese, Milan, Italy under the
Trade Mark "SINVET".
Generally any aromatic polycarbonate may be used; however those obtained from bisphenol A are particularly preferred. Thegolycarbonates employed in the composition of the present invention suitably have a molecular weight Mw ranging from 10,000 to over 200,000, more preferably from 20,000 to 60,000.
The crystalline polyesters are well known in the art and are commercially available from different sources.
Representative examples of crystalline polyesters obtained by polymerization of a glycol (II) with a bicarboxylic acid (III) are: polyethylene-terephthalate, polybutene-terephthalate, and polyethylene-2,2' di-phenoxy-ethane-4,4'-dicarboxyl ate.
These crystalline polyesters preferably have a molecular weight ranging from 10,000 to 60,000.
The polymeric blends of the present invention can be prepared in different ways, for example by single screw or double-screw extrusion and subsequent granulation, or by mastication in a Banbury mixer and subsequent cube shaping by means of a calender.
To the blends may be added optional additives such as antistatic agents, flame proofing agents, lubricating agents, colouring agents, physical and chemical expanding agents such as Freon, pentane,or azodicarbonamide.The blend can bye also reinforced by glass fibres or synthetic fibres. "FREON" is a
Registered Trade Mark.
The invention will be further described with reference to the following illustrative Examples. In the
Examples all the parts are expressed by weight, unless indicated otherwise.
The properties of the blends of the present invention have been tested on test pieces moulded by injection, by using the following methods:
1. The heat distortion temperature (HDT) was determined according to the standard ASTM D 648, at 66 psi and at 264 psi.
2. The Vicat softening point procedure A was determined according to the standard ASTM D 1 525.
3. ThelZOD impact strength was determined at 230C according to the standard ASTM D 256, by using test pieces of size 1/2" x -1/8" (1.27 cm x 0.32 cm).
4. The tests for the resistance against Freon (ESC) were carried out on test pieces subjected to creep in a tensile test, maintaining their central part, for a 40 mm stretch, in contact with liquid Freon 11. For this purpose, a glass container containing Freon 11 was fixed, by means of a rubber gasket, to.
the lower end of the vertically arranged test piece, in correspondence with its wider stretch. The test piece was subjected to a load'of 100 Kg/cm2 and the time~necessary for the rupture of the same was measured.
EXAMPLES 1-4
By means of a single screw extruder BANTER A TR 45, having a length/diameter ratio = 30, there were extruded with degasification and at the temperature.given in Table I, blends consisting of: -a modified vinyl-aromatic polymer having the following composition: 72% by weight of styrene,
123% by weight of alpha-methyl-styrene, 8% by weight, of acrylonitrile and 8% by weight of rubber; -an aromatic polycarbonate, "SINVET 221", sold by ANIC of S. Donato Milanese, Milan, Italy, in the amount given in Table I; and 0.05% by weight of a sterically hindered phenolic antioxidant, IRGANOX 1076.
By cutting'the filaments coming from the extruder, granules were obtained which were dried at
900C for two hours. The granules were moulded by injection, at a temperature that was 200C higher than the lowest filling temperature of the mould impression, on a NEGRI 8 BOSSY V-i 7-110 FA press, and thus test pieces were obtained.
The properties of the thus obtained test pieces are given in the following Table I.
TABLE I
Example No. 1 2 3 4 Vinyl-aromatic polymer 100 -70 50 30 Polycarbonate "SINVET" parts by weight) 0 30 50 70 Extrusion temperature of the blend (OC) 210 250 250 260 Lowest filling temperature of the mould impression 190 220 240 260 for injection of the test pieces (OC) HDTat 66psi(OC) 97 107 115 125 at 265 psi (OC) 89 96 105 119 VICAT A at 1 kg. in oil (OC) 107 118 129 140 at 5 kg. in oil(OC) 98 108 119 130 IZOD impact strength (J/m) 70 250 400 590 E.S.C. in Freon 11 (hours) 2 20 50 70 EXAMPLES 5--8 Following the procedures of Example 1 , test pieces were prepared by using blends consisting of: -a modified vinyl-aromatic polymer consisting of 84% by weight of styrene, 8% by weight of acrylonitrile, and 8% by weight of rubber; and -an amount given in Table ll of a polybutyleneterephthalate, "PIBITER N 100", of the present
Applicants.
The properties of the obtained test pieces are given in Table II.
TABLE ll
Example No. 5 6 7 8 Vinyl-aromatic polymer 100 75 50 25 Polybutyleneterephthalate "PIBITER N 100" 0 25 50 75 (parts by weight) Extrusion temperature of the blend (OC) 200 230 230 240 Lowest filling temperature of the mould impression 175 195 220 225 for injection of the test pieces (OC) HDTat 66psi(OC) 94 95 94 105 at 264 psi (OC) 84 83 79 72 VICAT A at 1 kg. in oil (OC) 90 92 99 126 at 5 kg. in oil (OC) IZOD impact strength (J/m) 80 49 50 55 E.S.C. in Freon 11 (hours) 1 20 150 170
Claims (8)
1. A polymeric blend containing: -from 20 to 80% by weight, with respect to the blend, of a modified vinyl-aromatic polymer container from 5 to 15% by weight of an ethylenically unsaturated nitrile; -from 80 to 20% by weight, with respect to the blend, of at least one resin containing aromatic groups selected from:
(a) an aromatic polycarbonate having repeating structural units of the formula::
in which R1, R2, R3 and R4 each represents hydrogen or an alkyl radical containing from 1 to 3 carbon atoms, and A represents -0-, -CO-, S02, an alkylene radical containing from 1 to 10 carbon atoms, an alkylidene radical containing from 1 to 10 carbon atoms, a cyclo-alkylene radical containing from 5 to 1 5 carbon atoms, a cyclo-alkylidene radical containing from 5 to 1 5 carbon atoms or the radical:
and
(b) a crystalline aromatic polyester obtained by polymerization of a glycol of general formula: HO(CH2)nOH (II) in which n is an integer from 2 to 10, with a bicarboxylic acid of formula:: H0OC-R-B-R6OOH
(Ill) in which R5 and R6 each represents (CH2)rn where m is zero or an integer from 1 to 4 and B is a bivalent aromatic radical represented by:
in which D may be:
-(CH2)p-;-(CH2)p-COCH2)p-; -(CH2)p-(CH2)-;-O-(CH2)q-O-;
where p may be zero or an integer from 1 to 5 and q is an integer from 1 to 5.
2. A polymeric blend as claimed in Claim 1, in which the modified vinyl-aromatic polymer contains at least 50% by weight of one or more vinyl-aromatic compounds of general formula:
in which X represents hydrogen or an alkyl radical having from 1 to 4 carbon atoms; Y represents hydrogen, a halogen, or an alkyl radical having from 1 to 4 carbon atoms; and n is zero or an integer from 1 to 5.
3. A polymeric blend as claimed in Claim 1 or 2, in which the vinyl-aromatic polymer contains rubber, to render the polymer impact-resistant.
4. A polymeric blend as claimed in any of Claims 1 to 3, in which the ethylenically unsaturated nitrile is acrylonitrile.
5. A polymeric blend as claimed in any of Claims 1 to 4, in which the content of ethylenically unsaturated nitrile in the modified vinyl-aromatic polymer is less than 10% by weight.
6. A polymeric blend as claimed in any of Claims 1 to 5, in which the polycarbonate is obtained from bisphenol.
7. A polymeric blend as claimed in any of Claims 1 to 6, in which the aromatic polyester is polybutylene-terephthalate,
8. A polymeric blend according to Claim 1, as described in any of the foregoing Examples.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT20362/82A IT1199981B (en) | 1982-03-24 | 1982-03-24 | MIXTURES BASED ON VINYL-AROMATIC POLYMERS |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8308155D0 GB8308155D0 (en) | 1983-05-05 |
| GB2118194A true GB2118194A (en) | 1983-10-26 |
| GB2118194B GB2118194B (en) | 1986-04-03 |
Family
ID=11166052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08308155A Expired GB2118194B (en) | 1982-03-24 | 1983-03-24 | Polymeric blends based on vinyl-aromatic polymers |
Country Status (7)
| Country | Link |
|---|---|
| DE (1) | DE3310757A1 (en) |
| ES (1) | ES8504886A1 (en) |
| FR (1) | FR2523988B1 (en) |
| GB (1) | GB2118194B (en) |
| IT (1) | IT1199981B (en) |
| NL (1) | NL8301006A (en) |
| SE (1) | SE455199B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0146021A1 (en) * | 1983-12-07 | 1985-06-26 | Bayer Ag | Process for the preparation and/or working-up of polymer mixtures |
| EP0146023A1 (en) * | 1983-12-07 | 1985-06-26 | Bayer Ag | Use of halogene-free polycarbonates based on bis (3,5-dimethyl-4-hydroxyphenyl)-methane in combination with polymers as fire retardants |
| FR2577230A1 (en) * | 1985-02-08 | 1986-08-14 | Charbonnages Ste Chimique | NOVEL COMPOSITIONS OF POLYMER RESINS BASED ON ACRYLONITRILE-BUTADIENE-STYRENE WITH IMPROVED PROPERTIES |
| EP0277835A2 (en) * | 1987-02-04 | 1988-08-10 | ENICHEM S.p.A. | Blends based on vinyl-aromatic polymers with improved characteristics of chemical resistance |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007006776A1 (en) | 2007-02-12 | 2008-08-21 | Dracowo Forschungs- Und Entwicklungs Gmbh | Polymer network with adjustable gel time and good mechanical and thermal properties, is obtained by mixing unsaturated polyester and natural epoxy resins |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB991422A (en) * | 1961-03-24 | 1965-05-05 | Borg Warner | Improvements in or relating to synthetic resin compositions |
| GB1418244A (en) * | 1973-05-04 | 1975-12-17 | Bayer Ag | Thermoplastic moulding compositions |
| GB1440783A (en) * | 1972-08-30 | 1976-06-23 | Teijin Ltd | Thermoplastic resin composition |
| GB1449870A (en) * | 1973-06-09 | 1976-09-15 | Bayer Ag | Transparent moulding compositions |
| GB1452141A (en) * | 1973-06-09 | 1976-10-13 | Bayer Ag | Polycarbonate moulding compositions |
| US4148956A (en) * | 1976-12-31 | 1979-04-10 | Alkor Gmbh | Thermoplastic moulding composition and its use and sheets made from the moulding composition |
| GB1578380A (en) * | 1976-11-23 | 1980-11-05 | Bayer Ag | Thermoplastic polycarbonate moulding compositions |
| GB1578384A (en) * | 1976-11-23 | 1980-11-05 | Bayer Ag | Thermoplastic polycarbonate moulding compositions |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5145306B2 (en) * | 1973-10-13 | 1976-12-03 | ||
| DE2717165A1 (en) * | 1977-04-19 | 1978-11-02 | Bayer Ag | THERMOPLASTIC MOLDING COMPOUNDS MADE FROM POLYCARBONATE AND ABS POLYMERIZED |
| DE2927576A1 (en) * | 1979-07-07 | 1981-01-15 | Bayer Ag | HIGH IMPACT POLYBUTYLENE TEREPHTHALATE |
| DE3344102A1 (en) * | 1983-12-07 | 1985-06-13 | Bayer Ag, 5090 Leverkusen | METHOD FOR PRODUCING AND / OR PROCESSING POLYMER MIXTURES |
-
1982
- 1982-03-24 IT IT20362/82A patent/IT1199981B/en active
-
1983
- 1983-03-21 NL NL8301006A patent/NL8301006A/en active Search and Examination
- 1983-03-21 SE SE8301516A patent/SE455199B/en not_active IP Right Cessation
- 1983-03-23 ES ES520894A patent/ES8504886A1/en not_active Expired
- 1983-03-23 FR FR8304734A patent/FR2523988B1/en not_active Expired
- 1983-03-24 GB GB08308155A patent/GB2118194B/en not_active Expired
- 1983-03-24 DE DE3310757A patent/DE3310757A1/en not_active Ceased
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB991422A (en) * | 1961-03-24 | 1965-05-05 | Borg Warner | Improvements in or relating to synthetic resin compositions |
| GB1440783A (en) * | 1972-08-30 | 1976-06-23 | Teijin Ltd | Thermoplastic resin composition |
| GB1418244A (en) * | 1973-05-04 | 1975-12-17 | Bayer Ag | Thermoplastic moulding compositions |
| GB1449870A (en) * | 1973-06-09 | 1976-09-15 | Bayer Ag | Transparent moulding compositions |
| GB1452141A (en) * | 1973-06-09 | 1976-10-13 | Bayer Ag | Polycarbonate moulding compositions |
| GB1578380A (en) * | 1976-11-23 | 1980-11-05 | Bayer Ag | Thermoplastic polycarbonate moulding compositions |
| GB1578384A (en) * | 1976-11-23 | 1980-11-05 | Bayer Ag | Thermoplastic polycarbonate moulding compositions |
| US4148956A (en) * | 1976-12-31 | 1979-04-10 | Alkor Gmbh | Thermoplastic moulding composition and its use and sheets made from the moulding composition |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0146021A1 (en) * | 1983-12-07 | 1985-06-26 | Bayer Ag | Process for the preparation and/or working-up of polymer mixtures |
| EP0146023A1 (en) * | 1983-12-07 | 1985-06-26 | Bayer Ag | Use of halogene-free polycarbonates based on bis (3,5-dimethyl-4-hydroxyphenyl)-methane in combination with polymers as fire retardants |
| US4564654A (en) * | 1983-12-07 | 1986-01-14 | Bayer Aktiengesellschaft | Process for the preparation and/or further processing of polymer blends |
| FR2577230A1 (en) * | 1985-02-08 | 1986-08-14 | Charbonnages Ste Chimique | NOVEL COMPOSITIONS OF POLYMER RESINS BASED ON ACRYLONITRILE-BUTADIENE-STYRENE WITH IMPROVED PROPERTIES |
| DE3603185A1 (en) * | 1985-02-08 | 1986-08-14 | GE Plastics ABS Europe B.V., Amsterdam | THERMOPLASTIC COMPOUNDS, METHOD FOR THE PRODUCTION THEREOF AND ITEMS OBTAINED FROM THEM |
| EP0277835A2 (en) * | 1987-02-04 | 1988-08-10 | ENICHEM S.p.A. | Blends based on vinyl-aromatic polymers with improved characteristics of chemical resistance |
| EP0277835A3 (en) * | 1987-02-04 | 1989-08-09 | Montedipe S.P.A. | Blends based on vinyl-aromatic polymers with improved characteristics of chemical resistance |
Also Published As
| Publication number | Publication date |
|---|---|
| SE455199B (en) | 1988-06-27 |
| FR2523988B1 (en) | 1986-01-03 |
| SE8301516D0 (en) | 1983-03-21 |
| SE8301516L (en) | 1983-09-25 |
| IT1199981B (en) | 1989-01-05 |
| IT8220362A0 (en) | 1982-03-24 |
| ES520894A0 (en) | 1985-05-01 |
| GB8308155D0 (en) | 1983-05-05 |
| GB2118194B (en) | 1986-04-03 |
| FR2523988A1 (en) | 1983-09-30 |
| NL8301006A (en) | 1983-10-17 |
| DE3310757A1 (en) | 1983-09-29 |
| ES8504886A1 (en) | 1985-05-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19950324 |