US4849479A
Expired / Lapsed
US
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Compatible polymer blends
Assignee: Roehm GmbH Darmstadt
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Filing: 1987-09-15
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Granted: 1989-07-18
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Expires: 2007-09-15
Abstract
Abstract Compatible polymer mixtures of a polymer component which contains cyclohexyl (meth)acrylate as a monomer and a polymer component which contains α-methyl styrene as a monomer.
Inventors
- 👤 Werner Siol
- 👤 Ulrich Terbrack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:04
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/16; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/046; C08L33/00; C08L33/04; C08L33/06; C08J2325/00; C08J2433/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
98 words
A miscible polymer blend, comprising: (i) 1-99.9 wt. % of a first polymer comprising a poly-alpha-methylstyrene, said poly-alpha-methylstyrene consisting of at least 20 wt. % alpha-methylstyrene, 40-80 wt. % of a monomer having the formula II ##STR4## wherein R 2 is methyl, ethyl, propyl or n-butyl, and less than 0.1 wt. % of polar monomers; and (ii) 99-0.1 wt. % of a second polymer comprising at least 2 wt. % of a monomer having formula I ##STR5## wherein R 1 is hydrogen or methyl, and at least 40 wt. % of at least one monomer having formula II.
Claim 2
Dependent Claim
98 words
A miscible polymer blend, comprising: (i) 1-99.9 wt. % of a first polymer comprising a poly-alpha-methylstyrene, said poly-alpha-methylstyrene consisting of at least 20 wt. % alpha-methylstyrene, 40-80 wt. % of a monomer having the formula II ##STR4## wherein R 2 is methyl, ethyl, propyl or n-butyl, and less than 0.1 wt. % of polar monomers; and (ii) 99-0.1 wt. % of a second polymer comprising at least 2 wt. % of a monomer having formula I ##STR5## wherein R 1 is hydrogen or methyl, and at least 40 wt. % of at least one monomer having formula II.
Claim 3
Dependent Claim
25 words
The miscible polymer blend of claim 1, wherein said second polymer comprises at least 5% by weight of at least one monomer with formula (I).
Claim 4
Dependent Claim
25 words
The miscible polymer blend of claim 1, wherein said second polymer comprises at least 10% by weight of at least one monomer with formula (I).
Claim 5
Dependent Claim
19 words
The miscible polymer blend of claim 1, wherein said polymer blend has a Vicat softening temperature of >115° C.
Claim 6
Dependent Claim
19 words
The miscible polymer blend of claim 1, wherein said polymer blend has a Vicat softening temperature of >125° C.
Claim 7
Dependent Claim
16 words
The miscible polymer blend of claim 1, wherein said polymer blend has a TD-value >260° C.
Claim 8
Dependent Claim
25 words
The miscible polymer blend of claim 1, wherein said polymer blend demonstrates a haze of <10% according to ASTM D 1003 in the non-pigmented state.
Claim 9
Dependent Claim
24 words
The miscible polymer blend of claim 1, wherein at least one of the said polymers of the blend has a molecular weight of >5,000.
Claim 10
Dependent Claim
136 words
A polymer composition, comprising: (i) 40-99 wt. % of a miscible polymer blend, said polymer blend comprising: (a) 1-99.9 wt. % of a first polymer comprising a poly-alpha-methylstyrene, said poly-alpha-methylstyrene consisting of at least 20 wt. % alpha-methylstyrene, 40-80 wt. % of a monomer having formula II ##STR6## wherein R 2 is methyl, ethyl, propyl or n-butyl, and less than 0.1 wt. % of polar monomers; (b) 99-0.1 wt. % of a second polymer comprising at least 2 wt. % of a monomer having the formula I ##STR7## wherein R 1 is hydrogen or methyl, and at least 40 wt. % of at least one monomer having formula II; and (ii) 60-1 wt. % of a third polymer, wherein said third polymer is not compatible with said first polymer, said second polymer, or said polymer blend.
Claim 11
Dependent Claim
136 words
A polymer composition, comprising: (i) 40-99 wt. % of a miscible polymer blend, said polymer blend comprising: (a) 1-99.9 wt. % of a first polymer comprising a poly-alpha-methylstyrene, said poly-alpha-methylstyrene consisting of at least 20 wt. % alpha-methylstyrene, 40-80 wt. % of a monomer having formula II ##STR6## wherein R 2 is methyl, ethyl, propyl or n-butyl, and less than 0.1 wt. % of polar monomers; (b) 99-0.1 wt. % of a second polymer comprising at least 2 wt. % of a monomer having the formula I ##STR7## wherein R 1 is hydrogen or methyl, and at least 40 wt. % of at least one monomer having formula II; and (ii) 60-1 wt. % of a third polymer, wherein said third polymer is not compatible with said first polymer, said second polymer, or said polymer blend.
Claim 12
Dependent Claim
32 words
The polymer composition of claim 9, wherein said third polymer has a glass temperature of <20° C. and is at least partially covalently bonded with said first polymer or said second polymer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-17 | 1993-01-16 | 1993-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-17 | 1997-01-16 | 1997-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-17 | 2001-01-16 | 2001-07-18 | $7700.00 | Window Closed / Lapsed |