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Patent US5047474A successfully refreshed from Google Patents.
US5047474A
Expired / Lapsed
US
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Polymeric modifier compositions
Assignee: Rohm and Haas Co
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Filing: 1989-08-03
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Granted: 1991-09-10
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Expires: 2009-08-03
Abstract
Abstract Modifier compositions of acrylic core/shell polymers and alkyl methacrylate-butadiene-styrene core/shell polymers are added to polyvinyl halides to provide materials with improved color depth and impact strength, as well as reduced pearlescence.
Inventors
- 👤 Ismail S. Rabinovich
- 👤 Eugene C. Szamborski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:31
CPC Classifications
C; C08; C08L; C08L101/00; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L51/00; C08L51/003; C08L51/04; Y; Y10; Y10S; Y10S525/00; Y10S525/902
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
102 words
A polymer composition of an acrylate core/shell polymer and a butadiene core/shell polymer, comprising from about 50 to about 95 weight percent of a first acrylate core/shell polymer having an alkyl acrylate core and a shell of alkyl methacrylate, and from about 5 to about 50 weight percent of a second core/shell polymer having a core of a polymer containing butadiene, a first outer stage of a polymer selected from the group of styrenic polymers, styrenic/methacrylate polymers, and alkyl methacrylate polymers, and a second outer stage of a polymer selected from the group of styrenic polymers, styrenic/methacrylate polymers, and alkyl methacrylate polymers.
Claim 2
Dependent Claim
102 words
A polymer composition of an acrylate core/shell polymer and a butadiene core/shell polymer, comprising from about 50 to about 95 weight percent of a first acrylate core/shell polymer having an alkyl acrylate core and a shell of alkyl methacrylate, and from about 5 to about 50 weight percent of a second core/shell polymer having a core of a polymer containing butadiene, a first outer stage of a polymer selected from the group of styrenic polymers, styrenic/methacrylate polymers, and alkyl methacrylate polymers, and a second outer stage of a polymer selected from the group of styrenic polymers, styrenic/methacrylate polymers, and alkyl methacrylate polymers.
Claim 3
Dependent Claim
18 words
The composition of claim 1 wherein said alkyl acrylate core is selected from C 2 -C 8 acrylates.
Claim 4
Dependent Claim
18 words
The composition of claim 1 wherein said polymer containing butadiene is selected from butadiene, and butadiene with styrene.
Claim 5
Dependent Claim
17 words
The composition of claim 1 wherein said styrenic polymer is selected from styrene homopolymers, and styrene copolymers.
Claim 6
Dependent Claim
19 words
The composition of claim 1 wherein said acrylate core/shell polymer is about 85 to 90 percent of said composition.
Claim 7
Dependent Claim
16 words
The composition of claim 5 wherein said acrylate core/shell polymer is about 87.5% of said composition.
Claim 8
Dependent Claim
18 words
The composition of claim 1 wherein said methyl methacrylate is about twelve percent of said second core/shell polymer.
Claim 9
Dependent Claim
16 words
The composition of claim 1 wherein said polymer containing butadiene is at least 75 percent butadiene.
Claim 10
Dependent Claim
12 words
The composition of claim 1 wherein said alkyl acrylate is butyl acrylate.
Claim 11
Dependent Claim
142 words
An improved polyvinyl halide composition of a polyvinyl halide and a polymer composition of an acrylate core/shell polymer and a butadiene core/shell polymer, comprising from about 50 to about 95 weight percent of a first acrylate core/shell polymer having an alkyl acrylate core and a shell of methyl methacrylate, and from about 5 to about 50 weight percent of a second core/shell polymer having a core of a polymer containing butadiene, a first outer stage of a polymer selected from the group of styrenic polymers, styrenic/methacrylate polymers, and alkyl methacrylate polymers, and a second outer stage of a polymer selected from the group of styrenic polymers, styrenic/methacrylate polymers, and alkyl methacrylate polymers, wherein said improved polyvinyl halide composition has a pearlescence rating equal or below 2, and a 1/8 inch Notched Izod value at 23° C. of about 3 ft.-lb./inch or greater.
Claim 12
Dependent Claim
142 words
An improved polyvinyl halide composition of a polyvinyl halide and a polymer composition of an acrylate core/shell polymer and a butadiene core/shell polymer, comprising from about 50 to about 95 weight percent of a first acrylate core/shell polymer having an alkyl acrylate core and a shell of methyl methacrylate, and from about 5 to about 50 weight percent of a second core/shell polymer having a core of a polymer containing butadiene, a first outer stage of a polymer selected from the group of styrenic polymers, styrenic/methacrylate polymers, and alkyl methacrylate polymers, and a second outer stage of a polymer selected from the group of styrenic polymers, styrenic/methacrylate polymers, and alkyl methacrylate polymers, wherein said improved polyvinyl halide composition has a pearlescence rating equal or below 2, and a 1/8 inch Notched Izod value at 23° C. of about 3 ft.-lb./inch or greater.
Claim 13
Dependent Claim
18 words
The composition of claim 10 wherein said alkyl acrylate core is selected from C 2 -C 8 acrylates.
Claim 14
Dependent Claim
18 words
The composition of claim 10 wherein said butadiene containing polymer is selected from butadiene, and butadiene with styrene.
Claim 15
Dependent Claim
16 words
The composition of claim 10 wherein said styrenic polymer is selected from styrene homopolymers and copolymers.
Claim 16
Dependent Claim
20 words
The composition of claim 10 wherein said acrylate core/shell polymer is about 85 to 90 percent of said polymer composition.
Claim 17
Dependent Claim
18 words
The composition of claim 10 wherein said methyl methacrylate is about 12 percent of said second core/shell polymer.
Claim 18
Dependent Claim
18 words
The composition of claim 10 wherein said acrylate core/shell polymer is about 87.5 percent of said polymer composition.
Claim 19
Dependent Claim
21 words
The composition of either claim 10 or 11 wherein said styrenic polymer is about 12 percent if said second core/shell polymer.
Claim 20
Dependent Claim
27 words
The polyvinyl halide composition of claim 10 wherein said polymer composition is at least about eight percent of said polyvinyl halide, and said polyvinylhalide is polyvinyl chloride.
Claim 21
Dependent Claim
34 words
The composition of claim 10 wherein the polyvinyl halide is selected from the group consisting of polyvinyl chloride, chlorinated polyvinyl chloride, and copolymers comprising greater than 50 weight percent of a vinyl halide polymer.
References Cited (Backward Citations)
US4120833A
Cited
US3985703A
Cited
US4393172A
Cited
US4362845A
Cited
US4443585A
Cited
EP0269324A2
Cited
EP0279724A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-09 | 1995-03-11 | 1995-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-09 | 1999-03-11 | 1999-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-09 | 2003-03-11 | 2003-09-10 | $7700.00 | Window Closed / Lapsed |