US4005037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polycarbonate-polyvinyl chloride moulding compounds
Assignee: Bayer AG
•
Filing: 1975-01-14
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Granted: 1977-01-25
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Expires: 1995-01-14
Abstract
Abstract Process for the production of vinyl chloride polymers modified with aromatic polycarbonate, characterized in that mixtures of olefinically unsaturated monomers containing at least 70 % by weight of vinyl chloride are polymerized by radical polymerization in the presence of aromatic polycarbonates, 0 - 100 % by weight of rubber or rubber-modified thermoplastic resin, based on the polycarbonate-modified vinyl chloride polymer, being added before or after polymerization.
Inventors
- 👤 Fritz Mietzsch
- 👤 Dietrich Hardt
- 👤 Volker Serini
- 👤 Herbert Bartl
- 👤 Hugo Vernaleken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:09
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/02; C08L; C08L51/00; C08L51/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
78 words
A process for the production of an aromatic polycarbonate-modified vinyl chloride polymer which comprises the radical polymerisation of a mixture of olefinically unsaturated monomers containing at least 70% by weight of vinyl chloride in the presence of at least one aromatic polycarbonate having an average molecular weight of from 10,000 to 200,000 and the addition of from 0-100% by weight, based on the aromatic polycarbonate-modified vinyl chloride polymer, of a rubber or a rubber-modified thermoplastic resin after polymerisation.
Claim 2
Dependent Claim
78 words
A process for the production of an aromatic polycarbonate-modified vinyl chloride polymer which comprises the radical polymerisation of a mixture of olefinically unsaturated monomers containing at least 70% by weight of vinyl chloride in the presence of at least one aromatic polycarbonate having an average molecular weight of from 10,000 to 200,000 and the addition of from 0-100% by weight, based on the aromatic polycarbonate-modified vinyl chloride polymer, of a rubber or a rubber-modified thermoplastic resin after polymerisation.
Claim 3
Dependent Claim
22 words
A process as claimed claim 1 in which the polycarbonate is soluble in or is capable of swelling in the monomer mixture.
Claim 4
Dependent Claim
43 words
A process as claimed in claim 1 in which from 5 to 80 parts by weight of polycarbonate are dissolved in from 95 to 20 parts by weight of the monomer mixture and are subsequently polymerised in the presence of a radical-forming agent.
Claim 5
Dependent Claim
19 words
A process as claimed in claim 1 in which from 50 to 98% of the monomer mixture is polymerised.
Claim 6
Dependent Claim
17 words
A process as claimed in claim 1 in which the polymerisation is carried out by suspension polymerisation.
Claim 7
Dependent Claim
176 words
A process as claimed in claim 1 in which from 5 to 100 mols-% of the structural units of the aromatic polycarbonate correspond to at least one formula selected from the group consisting of ##STR7##wherein R 1 , R 2 , R 3 and R 4 , which may be the same or different, each represent C 1 -C 3 alkyl, -Cl, -Br, phenyl or -H, but not more than 3 of the groups R 1 , R 2 , R 3 and R 4 may represent -H; X represents a single bond or -O-, -CO-, -SO 2 -, C 1 -C 10 alkylene, C 1 -C 10 alkylidene, C 5 -C 15 cycloalkylene, C 5 -C 15 cycloalkylidene, C 7 -C 20 cycloalkyl alkylene, C 6 -C 20 cycloalkyl alkylidene or a group of the formula: ##STR8##and ##STR9##wherein Z represents a C 5 -C 10 alkylene, C 5 -C 20 alkylidene, C 5 -C 15 cycloalkylene, C 5 -C 15 cycloalkylidene, C 7 -C 20 cycloalkyl alkylene or C 6 -C 20 cycloalkyl alkylidene group.
Claim 8
Dependent Claim
36 words
A process as claimed in claim 6 in which from 5 to 30 mols-% of the structural units of the polycarbonate correspond to at least one formula selected from the group consisting of (1) and (2).
Claim 9
Dependent Claim
36 words
A process as claimed in claim 6 in which from 50 to 100 mols-% of the structural units of the polycarbonate correspond to at least one formula selected from the group consisting of (1) and (2).
Claim 10
Dependent Claim
27 words
A process as claimed in claim 6 in which the polycarbonate only contains structural units corresponding to the formula: ##STR10##wherein X is as defined in claim 6.
Claim 11
Dependent Claim
28 words
A process as claimed in claim 9 in which the structural units corresponding to formula (3) are based on bis-(3,5-dimethyl-4-hydroxyphenyl)-methane, 2,2-bis-(3,5-dimethyl-4-hydroxyphenyl)-propane, 2,4-bis-(3,5-dimethyl-4-hydroxyphenyl)-2-methyl butane, 1,1-bis-(3,5-dimethyl-4-hydroxyphenyl)-cyclohexane or α,α' -bis-(3,5-dimethyl-4-hydroxyphenyl)-p-diisopropyl benzene.
Claim 12
Dependent Claim
36 words
A process as claimed in claim 6 in which the structural units corresponding to formula (1) are based on bis-(3,5-dimethyl-4-hydroxyphenyl)-methane. 2,2-bis-(3,5-dimethyl-4-hydroxyphenyl)-propane, 2,4-bis-3,5-dimethyl-4-hydroxyphenyl)-2-methyl butane, 1,1-bis-(3,5-dimethyl-4-hydroxyphenyl)-cyclohexane, α,α'-bis-(3,5-dimethyl-4-hydroxyphenyl)-p-diisopropyl benzene, 2,2-bis-(3,5-dichloro-4-hydroxyphenyl)-propane, 2,2-bis-(3,5-dibromo-4-hydroxyphenyl)-propane, 1,1-bis-(4-hydroxyphenyl)-cyclohexane, α,α'-bis-(4-hydroxyphenyl)-m-diisopropylbenzene, α,α'-bis-(4-hydroxyphenyl)-p-diisopropyl benzene, 2,4-bis-(4-hydroxyphenyl)-2-methyl-butane, 2,2-bis-(3-methyl-4-hydroxyphenyl)-propane or 2,2-bis-(3-chloro-4-hydroxyphenyl)-propane.
Claim 13
Dependent Claim
40 words
A process as claimed in claim 6 in which, in addition to structural units corresponding to at least one formula selected from the group consisting of (1) and (2) the polycarbonate only contains structural units corresponding to the formula: ##STR11##
Claim 14
Dependent Claim
20 words
A process as claimed in claim 6 in which the polycarbonate consists entirely of structural units corresponding to the formula:
Claim 15
Dependent Claim
12 words
Aromatic polycarbonate-modified vinyl chloride polymers produced by the process of claim 1.
References Cited (Backward Citations)
US3637909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |