Patent US3991009A successfully refreshed from Google Patents.
US3991009A
Expired / Lapsed
US
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Moulding compositions of graft polycarbonate and graft polymer rubbers
Assignee: Bayer AG
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Filing: 1974-04-10
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Granted: 1976-11-09
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Expires: 1994-04-10
Abstract
Abstract Thermoplastic moulding compositions of 1. 70 - 20 % by weight of graft polycarbonates whose graft stock is a vinyl polymer with a molecular weight of from 10,000 to 100,000, containing from 3 to 10 side chains attached by carbon, each of which contains a hydroxyphenyl group, on which aromatic polycarbonate chains are condensed, and 2. 30 - 80 % by weight of graft polymer rubbers obtained by polymerizing a mixture of 2.1. 50 - 90 % by weight styrene, α-methylstyrene, methylmethacrylate or mixtures thereof, and 2.2. 10 - 50 % by weight acrylonitrile, methacrylonitrile, methylmethacrylate or mixtures thereof on a diene or acrylate rubber.
Inventors
- 👤 Dieter Margotte
- 👤 Hugo Vernaleken
- 👤 Hermann Schnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:03
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/04; C08L69/00; Y; Y10; Y10S; Y10S525/00; Y10S525/942
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
113 words
A composition comprising: 1. from 70 to 20% by weight of at least one graft polycarbonate whose graft stock is a vinyl polymer with a molecular weight of from 10,000 to 100,000 containing from 3 to 10 side chains attached via carbon atoms, each of which contains at least one hydroxyphenyl group, on which aromatic polycarbonate chains are condensed, and 2. from 30 to 80% by weight of at least one graft polymer obtained by graft polymerizing a mixture comprising: a. from 50 to 90% by weight styrene, α-methylstyrene, methylmethacrylate or mixtures thereof, and b. from 10 to 50% by weight acrylonitrile, methacrylonitrile, methylmethacrylate or mixtures thereof on a diene or acrylate rubber.
Claim 2
Dependent Claim
113 words
A composition comprising: 1. from 70 to 20% by weight of at least one graft polycarbonate whose graft stock is a vinyl polymer with a molecular weight of from 10,000 to 100,000 containing from 3 to 10 side chains attached via carbon atoms, each of which contains at least one hydroxyphenyl group, on which aromatic polycarbonate chains are condensed, and 2. from 30 to 80% by weight of at least one graft polymer obtained by graft polymerizing a mixture comprising: a. from 50 to 90% by weight styrene, α-methylstyrene, methylmethacrylate or mixtures thereof, and b. from 10 to 50% by weight acrylonitrile, methacrylonitrile, methylmethacrylate or mixtures thereof on a diene or acrylate rubber.
Claim 3
Dependent Claim
54 words
A composition as claimed in claim 1 in which the said graft polycarbonates comprise a graft stock prepared by the radical initiated copolymerization of at least one ethylenically unsaturated compound and at least one aromatic hydroxy compound which has a ##STR1## substituent wherein R is hydrogen or alkyl having 1 to 4 carbon atoms.
Claim 4
Dependent Claim
38 words
A composition as claimed in claim 2 in which the ethylenically unsaturated compound is selected from the group consisting of styrene, α-methylstyrene, vinyl naphthalene, acrylonitrile, methacrylonitrile, methylacrylate, methylmethacrylate, ethylacrylate, ethylmethacrylate, butylacrylate, hexylacrylate, butylmethacrylate, vinyl acetate and vinyl propionate.
Claim 5
Dependent Claim
21 words
A composition as claimed in claim 3 in which a mixture of two of the said ethylenically unsaturated compounds is used.
Claim 6
Dependent Claim
23 words
A composition as claimed in claim 4 in which said mixture contains styrene and acrylonitrile in weight ratios of from 90:10 to 50:50.
Claim 7
Dependent Claim
55 words
A composition as claimed in claim 2 in which the said polymerizable aromatic hydroxy compound corresponds to the formula: ##SPC3## wherein R is as aforesaid; R 1 is H, Cl, Br, C 1 -C 4 alkyl, cycloalkyl or C 1 -C 4 alkoxy; n represents 0, 1 or 2 and X is --OH or ##SPC4##
Claim 8
Dependent Claim
18 words
A composition as claimed in claim 6 in which the said aromatic hydroxy compound is p-isopropenylphenol or 2-(hydroxyphenyl)-2-(p-isopropenylphenyl)-propane.
Claim 9
Dependent Claim
37 words
A composition as claimed in claim 2 in which from 1 to 10 mols of the polymerizable aromatic hydroxyl compound is used for every 100 mols of the total quantity of monomers involved in the copolymerization process.
Claim 10
Dependent Claim
23 words
A composition as claimed in claim 2 in which the said graft stock copolymer has a molecular weight of from 10,000 to 100,000.
Claim 11
Dependent Claim
18 words
A composition as claimed in claim 9 in which the said molecular weight is from 10,000 to 40,000.
Claim 12
Dependent Claim
23 words
A composition as claimed in claim 2 in which the said graft stock copolymer contains from 3 to 10 hydroxyl groups per macromolecule.
Claim 13
Dependent Claim
27 words
A composition as claimed in claim 2 in which the said graft stock is reacted with at least one di-(hydroxyphenyl)alkane and phosgene under conditions of polycarbonate formation.
Claim 14
Dependent Claim
22 words
A composition as claimed in claim 12 in which the said di-(hydroxyphenyl)-alkane is selected from bisphenol A, tetrachlorobisphenol A and tetrabromobisphenol A.
Claim 15
Dependent Claim
48 words
A composition as claimed in claim 12 in which the reaction mixture for the said reaction comprises at least 1 mol of the said hydroxy compound and at least 1 mol of phosgene or other carbamic acid derivative per mol of OH groups in the said graft stock.
Claim 16
Dependent Claim
34 words
A composition as claimed in claim 1 in which the said graft polymer component is prepared by the radical emulsion polymerization of graft monomers (a) and (b) in the presence of a rubber latex.
Claim 17
Dependent Claim
20 words
A composition as claimed in claim 15 in which the said rubber comprises polybutadiene, butadiene/styrene copolymers, butadiene/acrylate copolymers and polyacrylates.
Claim 18
Dependent Claim
42 words
A composition as claimed in claim 16 in which the said rubber also comprises up to approximately 10% by weight of at least one other monomer selected from the group consisting of methylacrylamide, methacrylamidomethylol ether, acrylic acid, divinylbenzene and ethylene glycol dimethacrylate.
Claim 19
Dependent Claim
32 words
A composition as claimed in claim 15 in which a total of from 10 to 200 parts by weight of monomer is grafted onto 100 parts by weight of the said rubber.
Claim 20
Dependent Claim
23 words
A composition as claimed in claim 15 in which the graft polymer component comprises from 5 to 40% by weight of said rubber.
Claim 21
Dependent Claim
92 words
A composition as claimed in claim 15 in which the said graft polymer comprises: from 10 to 100% by weight of a graft polymer of 10 to 90 parts by weight of a monomer mixture of: from 50 to 90% by weight styrene and from 50 to 10% by weight acrylonitrile on from 90 to 10 parts by weight of polybutadiene, butadiene/acrylonitrile copolymer or polybutylacrylate and from 0 to 90% by weight of a resin-like copolymer of from 50 to 90% by weight styrene and from 50 to 10% by weight acrylonitrile.
Claim 22
Dependent Claim
25 words
A composition as claimed in claim 20 in which the said butadiene/acrylonitrile copolymer also comprises small quantities of methacrylic acid, divinylbenzene or a mixture thereof.
Claim 23
Dependent Claim
19 words
A composition as claimed in claim 20 in which the said polybutylacrylate also comprises small quantities of methacrylamidomethylol ether.
Claim 24
Dependent Claim
23 words
A composition as claimed in claim 1 which also comprises fillers, glass fibres, pigments, stabilizers, flame-retarding agents, fluidizing agents, lubricants or mixtures thereof.
Claim 25
Dependent Claim
11 words
Moulded products derived from a composition as claimed in claim 1.
Claim 26
Dependent Claim
14 words
Moulded products as claimed in claim 24 when formed by an injection moulding process.
Claim 27
Dependent Claim
80 words
A composition comprising from 70 to 20% by weight of a graft polycarbonate, whose graft stock is a copolymer of 95 parts by weight of methylmethacrylate and 5 parts by weight of isopropenyl phenol onto which aromatic polycarbonate chains made from phosgene and bisphenol A are condensed and from 30 to 80% by weight of a graft polymer obtained by graft polymerizing a mixture of 50 to 90% by weight styrene and 10 to 50% by weight acrylonitrile onto polybutadiene.
Claim 28
Dependent Claim
80 words
A composition comprising from 70 to 20% by weight of a graft polycarbonate, whose graft stock is a copolymer of 95 parts by weight of methylmethacrylate and 5 parts by weight of isopropenyl phenol onto which aromatic polycarbonate chains made from phosgene and bisphenol A are condensed and from 30 to 80% by weight of a graft polymer obtained by graft polymerizing a mixture of 50 to 90% by weight styrene and 10 to 50% by weight acrylonitrile onto polybutadiene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-09 | 1980-05-10 | 1980-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-09 | 1984-05-10 | 1984-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-09 | 1988-05-10 | 1988-11-09 | $7700.00 | Window Closed / Lapsed |