US4351923A
Expired / Lapsed
US
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Process for terpolymer polyblends having high gloss and ductility
Assignee: Bayer Antwerpen NV
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Filing: 1980-12-04
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Granted: 1982-09-28
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Expires: 2000-12-04
Abstract
Abstract The invention relates to a process for preparing terpolymer polyblends having high gloss and ductility in formed articles, wherein, rubber particles in an aqueous latex are reacted with an alkenyl aromatic, alkenyl nitrile and alkyl acrylate monomer formulation such that said rubber particles become grafted with at least a portion of said monomers while said monomers form a matrix terpolymer phase of said monomers followed by separating said matrix phase terpolymer and said grafted rubber particles from said latex as a terpolymer polyblend. The invention also relates to a composition of said process.
Inventors
- 👤 Edward F. Tokas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:13
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08L25/14; C08L51/00; C08L51/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
166 words
A process for preparing terpolymer polyblends having high gloss and toughness comprising the steps: A. charging an aqueous latex having polybutadiene rubber particles dispersed therein to a reaction zone, B. mixing a monomer formulation of alkenyl aromatic, alkenyl nitrile and alkyl acrylate monomers with said latex, said alkyl acrylate monomer being present in an amount of about 1 to 20% by weight of said monomer formulation, C. polymerizing by emulsifying on water said monomers in the presence of said latex such that, said rubber particles become grafted with at least a portion of said monomers while said monomers form a matrix terpolymer phase of said monomers, D. separating said matrix terpolymer phase having said grafted rubber particles dispersed therein from said latex forming said terpolymer polyblend, wherein said polymerization in step (C) is carried out at 20° to 100° C., at 0.7 to 7 atms. of pressure with water soluble catalyst, said polybutadiene rubber particles having an average particle size of about 0.1 to 0.7 microns.
Claim 2
Dependent Claim
166 words
A process for preparing terpolymer polyblends having high gloss and toughness comprising the steps: A. charging an aqueous latex having polybutadiene rubber particles dispersed therein to a reaction zone, B. mixing a monomer formulation of alkenyl aromatic, alkenyl nitrile and alkyl acrylate monomers with said latex, said alkyl acrylate monomer being present in an amount of about 1 to 20% by weight of said monomer formulation, C. polymerizing by emulsifying on water said monomers in the presence of said latex such that, said rubber particles become grafted with at least a portion of said monomers while said monomers form a matrix terpolymer phase of said monomers, D. separating said matrix terpolymer phase having said grafted rubber particles dispersed therein from said latex forming said terpolymer polyblend, wherein said polymerization in step (C) is carried out at 20° to 100° C., at 0.7 to 7 atms. of pressure with water soluble catalyst, said polybutadiene rubber particles having an average particle size of about 0.1 to 0.7 microns.
Claim 3
Dependent Claim
57 words
A process of claim 1 wherein said alkenyl aromatic monomer comprises at least one monomer of the formula: ##STR2## where Ar is selected from the group consisting of phenyl, halophenyl, alkyl phenyl and alkylhalophenyl and mixtures thereof and X is selected from the group consisting of hydrogen and an alkyl radical of less than three carbon atoms.
Claim 4
Dependent Claim
17 words
A process of claim 1 wherein said alkenyl nitrile monomer is acrylonitrile, metha-acrylonitrile, ethylacrylonitrile or mixtures thereof.
Claim 5
Dependent Claim
39 words
A process of claim 1 wherein said separation of step (D) is carried out by the coagulation of said aqueous latex followed by filtering, washing and drying said polyblend of said grafted diene rubber and said matrix polymer phases.
Claim 6
Dependent Claim
29 words
A process of claim 1 wherein said diene rubber moiety is present in said polyblend in an amount of about 2 to 50% by weight based on said polyblend.
Claim 7
Dependent Claim
28 words
A process of claim 1 wherein said latex has present said diene rubber particles in an amount of about 20 to 60% by weight based on said latex.
Claim 8
Dependent Claim
25 words
A process of claim 1 wherein the weight ratio of alkenyl aromatic to alkenyl nitrile monomers in said monomer formulation is about 85:15 to 60:40.
Claim 9
Dependent Claim
23 words
A process of claim 1 wherein said alkyl acrylate monomer is selected from the group consisting of C 1 -C 12 alkyl acrylates.
Claim 10
Dependent Claim
12 words
A process of claim 1 wherein said alkyl acrylate is butyl acrylate.
Claim 11
Dependent Claim
29 words
A process of claim 1 wherein said water soluble catalysts are selected from the group consisting of alkali metal percarbonates, persulfates, perborates, peracetates and hydrogen peroxide or mixtures thereof.
Claim 12
Dependent Claim
16 words
A process of claim 1 wherein said water soluble catalysts are activated as a redox system.
Claim 13
Dependent Claim
39 words
A process of claim 1 wherein said separation of step (D) is carried out by the coagulation of said aqueous latex followed by filtering, washing and drying said polyblend of said grafted diene rubber and said matrix polymer phases.
Claim 14
Dependent Claim
157 words
A process for polymerizing terpolymer polyblends having the steps: A. charging an aqueous latex having polybutadiene rubber particles dispersed therein to a mixing zone, B. mixing a monomer formulation consisting essentially of styrene, acrylonitrile and alkyl acrylate monomers in said latex, said acrylate monomer having present in an amount of 1 to 20% by weight of said monomer formulation, C. polymerizing by emulsifying on water said monomers in the presence of said latex such that said diene rubber particles become grafted with at least a portion of said monomers while said monomers form a matrix polymer phase of said polymers, D. separating said grafted rubber particles and said matrix polymer phase from said latex as a terpolymer polyblend, said grafted rubber particles having an average particle size of about 0.2 to 0.7 microns, said polymerization in step (C) is carried out at 20° to 100° C., at 0.7 to 7 atms. of pressure with water soluble catalyst.
Claim 15
Dependent Claim
157 words
A process for polymerizing terpolymer polyblends having the steps: A. charging an aqueous latex having polybutadiene rubber particles dispersed therein to a mixing zone, B. mixing a monomer formulation consisting essentially of styrene, acrylonitrile and alkyl acrylate monomers in said latex, said acrylate monomer having present in an amount of 1 to 20% by weight of said monomer formulation, C. polymerizing by emulsifying on water said monomers in the presence of said latex such that said diene rubber particles become grafted with at least a portion of said monomers while said monomers form a matrix polymer phase of said polymers, D. separating said grafted rubber particles and said matrix polymer phase from said latex as a terpolymer polyblend, said grafted rubber particles having an average particle size of about 0.2 to 0.7 microns, said polymerization in step (C) is carried out at 20° to 100° C., at 0.7 to 7 atms. of pressure with water soluble catalyst.
References Cited (Backward Citations)
US3449471A
Cited
US3557251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |