Poly(alkenyl substituted aromatic) and elastomer containing polymer compositions and process for their preparation
First Claim
1. Poly(alkenyl substituted aromatic) containing polymer compositions, obtained by a process comprising:
- (a) reacting a polyphenylene ether or a structurally related polymer thereof of the formula ##STR6## wherein R1 and R4 each may represent hydrogen, halogen, a phenyl group, alkenyl group, alkadienyl group, an aryloxy group, or wherein R1 and R4 each may represent an alkyl group or an alkoxy group, each of the latter containing 12 or less carbon atoms and each optionally substituted by halogen, cyano, hydroxy, phenyl or amino, whereas alkyl or alkoxy groups attached to the terminal phenol nucleus of the chain may be substituted by an amino, dialkylamino or a di(alkanoyl) amide group, wherein the alkyl groups each contain 4 or less carbon atoms, wherein R2 and R3 each may represent hydrogen, halogen, a phenyl group, alkenyl group, alkadienyl group, aryloxy group or wherein R2 and R3 each may represent a primary or secondary alkyl group or alkoxy group as defined for R1 and R4, optionally substituted by halogen, cyano, hydroxy, phenyl, and wherein R1, R2, R3 and R4 may represent different or the same groups in one repeating unit, and n represents an integer having a value of at least 50 and more preferably 100 to 500, with an acid halide, an acid anhydride or ketene, in at least one alkenyl substituted aromatic monomer, the amount of polyphenylene ether or structurally related polymer in the reaction mixture being in the range of from 5 to 30% by weight calculated on the complete final composition;
(b) dissolving at least one ethylenepropylenediene monomer (EPDM) rubber having a specific density in the range of from 0.85 to 0.95, a Mooney viscosity (ML(1+4) 125°
C.) in the range of from 30 to 80, an ethylene content in the range of from 50 to 70% by weight, in the reaction mixture of step (a) in an amount of from 5 to 20% by weight together with a diblock copolymer A--B which is optionally partially hydrogenated, optionally mixed with minor amounts of triblock copolymers A--B--A, wherein A represents a poly(alkenyl aromatic) block and B represents an optionally, partially hydrogenated poly (conjugated diene) block, having a number average molecular weight in the range of from 10,000 to 1,000,000 and showing a glass transition temperature of -20°
C. or below, said diblock copolymer being added to the reaction mixture of step (a) in an amount of from 1 to 5% by weight calculated on the weight of the complete final composition;
(c) prepolymerizing the obtained mixture until a prepolymerized mass is formed having a degree of polymerization of from 5 to 20%;
(d) suspending the resulting prepolymerized mass in an aqueous medium; and
(e) polymerizing by thermal initiation or by means of at least one free radical initiator, optionally in the presence of an expanding agent, the prepolymerized mass of step (d).
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Abstract
Poly(alkenyl substituted aromatic) and elastomer containing polymer compositions, obtainable by a process comprising:
(a) conversion of polyphenylene ether or a structurally related polymer thereof with an acid halide, an acid anhydride or ketene, in at least one alkenyl substituted aromatic monomer;
(b) dissolution of at least one EPDM rubber and an optionally partially hydrogenated diblock copolymer A--B, optionally mixed with minor amounts of triblock copolymers ABA, wherein A represents a poly(alkenyl aromatic) block and B represents an optionally, partially hydrogenated poly conjugated diene block;
(c) prepolymerization of the obtained mixture until a polymerization degree of from 5 to 20%;
(d) suspending the prepolymerized mass into an aqueous medium;
(e) polymerization by thermal initiation or by initiation by means of at least one free radical initiator, optionally in the presence of an expanding agent;
and a process for the preparation of such polymer compositions.
103 Citations
16 Claims
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1. Poly(alkenyl substituted aromatic) containing polymer compositions, obtained by a process comprising:
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(a) reacting a polyphenylene ether or a structurally related polymer thereof of the formula ##STR6## wherein R1 and R4 each may represent hydrogen, halogen, a phenyl group, alkenyl group, alkadienyl group, an aryloxy group, or wherein R1 and R4 each may represent an alkyl group or an alkoxy group, each of the latter containing 12 or less carbon atoms and each optionally substituted by halogen, cyano, hydroxy, phenyl or amino, whereas alkyl or alkoxy groups attached to the terminal phenol nucleus of the chain may be substituted by an amino, dialkylamino or a di(alkanoyl) amide group, wherein the alkyl groups each contain 4 or less carbon atoms, wherein R2 and R3 each may represent hydrogen, halogen, a phenyl group, alkenyl group, alkadienyl group, aryloxy group or wherein R2 and R3 each may represent a primary or secondary alkyl group or alkoxy group as defined for R1 and R4, optionally substituted by halogen, cyano, hydroxy, phenyl, and wherein R1, R2, R3 and R4 may represent different or the same groups in one repeating unit, and n represents an integer having a value of at least 50 and more preferably 100 to 500, with an acid halide, an acid anhydride or ketene, in at least one alkenyl substituted aromatic monomer, the amount of polyphenylene ether or structurally related polymer in the reaction mixture being in the range of from 5 to 30% by weight calculated on the complete final composition; (b) dissolving at least one ethylenepropylenediene monomer (EPDM) rubber having a specific density in the range of from 0.85 to 0.95, a Mooney viscosity (ML(1+4) 125°
C.) in the range of from 30 to 80, an ethylene content in the range of from 50 to 70% by weight, in the reaction mixture of step (a) in an amount of from 5 to 20% by weight together with a diblock copolymer A--B which is optionally partially hydrogenated, optionally mixed with minor amounts of triblock copolymers A--B--A, wherein A represents a poly(alkenyl aromatic) block and B represents an optionally, partially hydrogenated poly (conjugated diene) block, having a number average molecular weight in the range of from 10,000 to 1,000,000 and showing a glass transition temperature of -20°
C. or below, said diblock copolymer being added to the reaction mixture of step (a) in an amount of from 1 to 5% by weight calculated on the weight of the complete final composition;(c) prepolymerizing the obtained mixture until a prepolymerized mass is formed having a degree of polymerization of from 5 to 20%; (d) suspending the resulting prepolymerized mass in an aqueous medium; and (e) polymerizing by thermal initiation or by means of at least one free radical initiator, optionally in the presence of an expanding agent, the prepolymerized mass of step (d). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. Process for the preparation of poly(alkenyl substituted aromatic) containing polymer compositions comprising:
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(a) reacting a polyphenylene ether or a structurally related polymer thereof of the formula ##STR11## wherein R1 and R4 each may represent hydrogen, halogen, a phenyl group, alkenyl group, alkadienyl group, an aryloxy group, or wherein R1 and R4 each may represent an alkyl group or an alkoxy group, each of the latter containing 12 or less carbon atoms and each optionally substituted by halogen, cyano, hydroxy, phenyl or amino, with alkyl or alkoxy groups attached to the terminal phenol nucleus of the chain optionally being substituted by an amino, dialkylamino or a di(alkanoyl) amide group, wherein the alkyl groups each contain 4 or less carbon atoms, wherein R2 and R3 each represent hydrogen, halogen, a phenyl group, alkenyl group, alkadienyl group, aryloxy group or wherein R2 and R3 each represent a primary or secondary alkyl group or alkoxy group as defined for R1 and R4, optionally substituted by halogen, cyano, hydroxy, phenyl, and wherein R1, R2, R3 and R4 represent different or the same groups in one repeating unit, and n represents an integer having a value of at least 50, with an acid halide, an acid anhydride or ketene, in at least one alkenyl substituted aromatic monomer, the amount of polyphenylene ether or structurally related polymer in the reaction mixture being in the range of from 5 to 35% by weight calculated on the complete final composition; (b) dissolving at least one EPDM rubber having a specific density in the range of from 0.85 to 0.95, a Mooney viscosity (ML(1+4) 125°
C.) in the range of from 30 to 80, an ethylene content in the range of rom 50 to 70% by weight, in the reaction mixture of step (a) in an amount of from 5 to 20% by weight together with a diblock copolymer A--B which is optionally partially hydrogenated, optionally mixed with minor amounts of triblock copolymer A--B--A, wherein A represents a poly(alkenyl aromatic) block and B represents an optionally, partially hydrogenated poly conjugated diene block, having a number average molecular weight in the range of from 10,000 to 1,000,000 and exhibiting a glass transition temperature of -20°
C. or below, said diblock copolymer being present in an amount of from 1 to 5% by weight calculated on the weight of the complete final composition;(c) prepolymerizing the obtained mixture until a prepolymerization mass is formed having a degree of polymerization of from 5 to 20%; (d) suspending the prepolymerized mass in an aqueous medium; and (e) polymerizing by thermal initiation or by means of at least one free radical initiator, optionally in the presence of an expanding agent, the prepolymerized mass of step (d).
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Specification