US4052525A
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Multi-layer structure acrylic polymer composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1976-04-23
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Granted: 1977-10-04
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Expires: 1996-04-23
Abstract
Abstract A multi-layer structure polymer composition composed of an innermost layer (A), an elastomeric layer (B), an outermost layer (C), and at least one intermediate layer, said layer (A) having a glass transition temperature (Tg) of 10° C. or higher and consisting of the reaction product of 51 to 100 parts by weight of an alkyl methacrylate whose alkyl group has 4 or less carbon atoms, 0 to 49 parts by weight of a copolymerizable monomer, 0 to 10 parts by weight of a polyfunctional monomer, and 0.1 to 5 parts by weight of a graftlinking agent; said layer (B) having a glass transition temperature (Tg) of 0° C. or lower and consisting of the reaction product of 80 to 100 parts by weight of an alkyl acrylate whose alkyl group has 8 or less carbon atoms, 0 to 20 parts by weight of a copolymerizable monomer, 0 to 10 parts by weight of a polyfunctional monomer, and 0.1 to 5 parts by weight of a graftlinking agent; said layer (C) having a glass transition temperature (Tg) of 50° C. or higher and consisting of the reaction product of 51 to 100 parts by weight of an alkyl methacrylate whose alkyl group has 4 or less carbon atoms, and 0 to 49 parts by weight of a copolymerizable monomer; and said intermediate layer consisting of the reaction product of 10 to 90 parts by weight of an alkyl methacrylate whose alkyl group has 4 or less carbon atoms, 90 to 10 parts by weight of an alkyl acrylate whose alkyl group has 8 or less carbon atoms, 0 to 10 parts by weight of a polyfunctional monomer, and 0.1 to 5 parts by weight of a graftlinking agent. The said polymer composition is excellent in transparency, gloss, and resistance to stress whitening and has good resistance to weather and impact.
Inventors
- 👤 Fumio Ide
- 👤 Kazuo Kishida
- 👤 Akira Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:30
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/28; B32B27/30; B32B27/308; C; C08; C08F; C08F285/00; B32B2307/00; B32B2307/40; B32B2307/406; B32B2307/412; B32B2307/50; B32B2307/558; B32B2307/70; B32B2307/712; B32B2333/00; B32B2333/04; B32B2333/12; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31725; Y10T428/3175; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917; Y10T428/3192; Y10T428/31924; Y10T428/31928; Y10T428/31935
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
288 words
A multi-layer structure polymer composition, comprising: an innermost layer (A), an elastomeric polymer layer (B), and outermost layer (C), and at least one intermediate layer, said layer (A) has a glass transition temperature (T g ) of at least 10° C and consisting of 51 to 100 parts by weight of an alkyl methacrylate whose alkyl group has 4 or less carbon atoms, 0 to 49 parts by weight of a monomer having a copolymerizable double bond, 0 to 10 parts by weight of a polyfunctional monomer, and 0.1 to 5 parts by weight of a graftlinking agent; said layer (B) having a (T g ) of up to and including 0° C and consisting of 80 to 100 parts by weight of an alkyl acrylate whose alkyl group has 8 or less carbon atoms, 0 to 20 parts by weight of a monomer having a copolymerizable double bond, 0 to 10 parts by weight of a polyfunctional monomer, and 0.1 to 5 parts by weight of a graftlinking, agent; said layer (C) having a (T g ) of at least 50° C and consisting of the polymerizate of 51 to 100 parts by weight of an alkyl methacrylate whose alkyl group has 4 or less carbon atoms, and 0 to 49 parts by weight of a monomer having a copolymerizable double bond; and said intermediate layer consisting of 10 to 90 parts by weight of an alkyl methacrylate whose alkyl group has 4 or less carbon atoms, 90 to 10 parts by weight of an alkyl acrylate whose alkyl group has 8 or less carbon atoms, 0 to 10 parts by weight of a polyfunctional monomer, and 0.1 to 5 parts by weight of a graft-linking agent.
Claim 2
Dependent Claim
288 words
A multi-layer structure polymer composition, comprising: an innermost layer (A), an elastomeric polymer layer (B), and outermost layer (C), and at least one intermediate layer, said layer (A) has a glass transition temperature (T g ) of at least 10° C and consisting of 51 to 100 parts by weight of an alkyl methacrylate whose alkyl group has 4 or less carbon atoms, 0 to 49 parts by weight of a monomer having a copolymerizable double bond, 0 to 10 parts by weight of a polyfunctional monomer, and 0.1 to 5 parts by weight of a graftlinking agent; said layer (B) having a (T g ) of up to and including 0° C and consisting of 80 to 100 parts by weight of an alkyl acrylate whose alkyl group has 8 or less carbon atoms, 0 to 20 parts by weight of a monomer having a copolymerizable double bond, 0 to 10 parts by weight of a polyfunctional monomer, and 0.1 to 5 parts by weight of a graftlinking, agent; said layer (C) having a (T g ) of at least 50° C and consisting of the polymerizate of 51 to 100 parts by weight of an alkyl methacrylate whose alkyl group has 4 or less carbon atoms, and 0 to 49 parts by weight of a monomer having a copolymerizable double bond; and said intermediate layer consisting of 10 to 90 parts by weight of an alkyl methacrylate whose alkyl group has 4 or less carbon atoms, 90 to 10 parts by weight of an alkyl acrylate whose alkyl group has 8 or less carbon atoms, 0 to 10 parts by weight of a polyfunctional monomer, and 0.1 to 5 parts by weight of a graft-linking agent.
Claim 3
Dependent Claim
46 words
The polymer composition according to claim 1, wherein the polymer composition comprises 5 to 35% by weight of (A), 5 to 45 % by weight of (B), 10 to 80% by weight of (C), and 5 to 25% by weight of at least one intermediate layer.
Claim 4
Dependent Claim
67 words
The polymer composition according to claim 1, wherein at least one of said intermediate layers is present between the (A) and (B) layers and between (B) and (C) layers with the proviso that no intermediate layer need be present between the (A) and (B) layers; and the alkyl methacrylate content of the intermediate layers increases linearly from the (B) layer toward both the (A) and (C) layers.
Claim 5
Dependent Claim
53 words
The polymer composition according to claim 1, wherein the polymer composition comprises 5 to 35% by weight of (A), 10 to 45% by weight of (B), 10 to 80% by weight of (C), and 5 to 35% by weight, in total, of at least one intermediate layers between the (B) and (C) layers.
Claim 6
Dependent Claim
72 words
The polymer composition according to claim 1, wherein the polymer composition comprises 5 to 35% by weight of (A), 5 to 35% by weight of (B), 10 to 60% by weight of (C), 5 to 25% by weight, in total, of at least one intermediate layers between the (A) and (B) layers, and 5 to 25% by weight, in total, of at least 2 intermediate layers between the (B) and (C) layers.
Claim 7
Dependent Claim
47 words
The polymer composition according to claim 1, wherein the polymer composition is produced by polymerizing the components for the (A) layer in the presence of 0.1 to 5% by weight of an anionic emulsifier dissolved in water or in the monomers and subsequently seed-polymerizing the other monomers.
Claim 8
Dependent Claim
37 words
The polymer composition according to claim 1, wherein the alkyl methacrylate is methyl methacrylate, the alkyl acrylate is n-butyl acrylate, the graftlinking agent is allyl methacrylate, and the polyfunctional monomer is 1,3-butylene dimethacrylate or ethylene glycol dimethacrylate.
Claim 9
Dependent Claim
30 words
The polymer composition according to claim 1, wherein the alkyl methacrylate is methyl methacrylate, the alkyl acrylate is n-butyl acrylate, and the graftlinking agent is allyl methacrylate or triallyl cyanurate.
Claim 10
Dependent Claim
27 words
The polymer composition according to claim 1, wherein the alkyl methacrylate is selected from the group consisting of methyl methacrylate, ethyl methacrylate, propyl methacrylate, and butyl methacrylate.
Claim 11
Dependent Claim
29 words
The polymer composition according to claim 1, wherein the alkyl acrylate is selected from the group consisting of methyl acrylate, ethyl acrylate, butyl acrylate, propyl acrylate, and 2-ethylhexyl acrylate.
Claim 12
Dependent Claim
37 words
The polymer composition according to claim 1, wherein the graftlinking agent is selected from the group consisting of allyl methacrylate, methallyl methacrylate, crotyl methacrylate, allyl acrylate, diallyl maleate, diallyl fumarate, diallyl phthalate, triallyl cyanurate, and triallyl isocyanurate.
Claim 13
Dependent Claim
95 words
A resin composition comprising a mixture of 1 to 99% by weight of the multi-layer structure polymer composition as claimed in claim 1 and 99 to 1% by weight of at least one thermoplastic polymer selected from the group consisting of homopolymers and copolymers of at least one monomer represented by the general formula, ##STR2## wherein X is H, CH 3 , Cl, F, Br, COOCH 3 , CN, OCOCH 3 , C 6 H 5 , or an alkoxy and Y is H, CH 3 , Cl, F, or Br; polycarbonates; polyesters; and polyamides.
Claim 14
Dependent Claim
30 words
The resin composition according to claim 12, wherein the thermoplastic polymer comprises at least 60% by weight of an alkyl methacrylate whose alkyl group has 4 or less carbon atoms.
Claim 15
Dependent Claim
19 words
The resin composition according to claim 12, wherein the thermoplastic polymer comprises at least 60% by weight of polycarbonate.
Claim 16
Dependent Claim
20 words
The resin composition according to claim 12, wherein the thermoplastic polymer comprises at least 80% by weight of vinyl chloride.
References Cited (Backward Citations)
US3458603A
Cited
US3562235A
Cited
US3804925A
Cited
US3681167A
Cited
US3651005A
Cited
US3959550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |