US3843753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite interpolymer and low haze impact resistant thermoplastic compositions thereof
Assignee: Rohm and Haas Co
•
Filing: 1973-09-04
•
Granted: 1974-10-22
•
Expires: 1993-09-04
Abstract
Abstract Rigid thermoplastics, such as acrylic polymers and vinyl halide polymers are modified to impart high impact resistance. Modified rigid acrylic thermoplastics retain clarity upon exposure with a modification of a particular acrylic elastomer having a minimum attachment level to the rigid phase of 20 percent. The elastomer comprises at least 50 weight percent alkyl or aralkyl acrylate, 0.05 to 5.0 weight percent of a graft-linking monomer, 0.05 to 5.0 weight percent of a cross-linking monomer and 0 to 10.0 weight percent of a hydrophilic monomer. The elastomer can be present in an amount ranging from 0.5 to 50 weight percent of the total modified material, and can be prepared integrally with the rigid phase or as separate additive comprising elastomer and attached rigid phase.
Inventors
- 👤 F Owens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:08
CPC Classifications
C; C08; C08F; C08F285/00; C08F265/00; C08F265/04; C08F265/06; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; C08L51/00; C08L51/003; Y; Y10; Y10S; Y10S525/00; Y10S525/932
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
242 words
A THERMOFORMABLE COMPOSITION COMPRISING A BLEND OF A RIGID THERMOPLAATIC POLYMER AND A COMPOSITE INTERPOLYMER COMPRISING (A) A FIRST, ELASTOMERIC PHASE HAVING A GLASS TRANSITION TEMPERATURE OF LESS THAN 10*C, POLYMERIZED FROM A MONOMER MIX COMPRISING AT LEAST ABOUT 50 WEIGHT PERCENT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARALKYL ACRYLATE AND MIXTURE THEREOF, ABOUT 0.05 TO 5.0 WEIGHT PERCENT OF CROSS-LINKING MONOMER, ABOUT 0.05 TO 5.0 WEIGHT PERCENT OF GRAFT-LINKING MONOMER, ABOUT 0 TO 10.0 WEIGHT PERCENT HYDROPHILIC MONOMER, AND THE BALANCE OTHER COPOLYMERIZABLE ETHYLENICALY UNSATURATED MONOMER; AND FURTHER CHARACTERIZED IN THAT THE INITIAL MONOMER MIXTURE OF SAID PHASE HAS PRESENT AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARALKYL ACRYLATE AND MIXTURES THEREOF, A CROSS-LINKING MONOMER AND A GRAFT-LINKING MONOMER, SAID CROSS-LINKING MONOMER BEING A POLYETHYLENICALLY UNSATURATED MONOMER HAVING A PLURALITY OF ADDITION POLYMERIZABLE REACTIVE GROUPS ALL OF WHICH POLYMERIZE AT SUBSTANTIALLY THE SAME RATE OF REACTION AND WHEREIN SAID GRAFT-LINKING MONOMER BEING A POLYETHYLENICALLY UNSATURATED MONOMER HAVING A PLURALITY OF ADDITION POLYMERIZABLE REACTIVE GROUPS, AT LEAST ONE OF WHICH POLYMERIZES AT A SUBSTANTIALLY DIFFERENT RATE OF POLYMERIZATION FROM AT LEAST ONE OTHER OF SAID REACTIVE GROUPS; (B) A FINAL, RIGID THERMOPLASTIC PHASE POLYMERIZED IN THE PRESENCE OF SAID ELASTOMERIC PHASE FROM A MONOMER MIX COMPRISING AT LEAST ABOUT 50 WEIGHT PERCENT ALKYL METHACRYLATE WHEREIN SAID ELASTOMERIC PHASE AND SAID THERMOPLASTIC PHASE HAVE A MINIMUM CHEMICAL ATTACHMENT LEVEL OF ABOUT 20 PERCENT.
Claim 2
Dependent Claim
242 words
A THERMOFORMABLE COMPOSITION COMPRISING A BLEND OF A RIGID THERMOPLAATIC POLYMER AND A COMPOSITE INTERPOLYMER COMPRISING (A) A FIRST, ELASTOMERIC PHASE HAVING A GLASS TRANSITION TEMPERATURE OF LESS THAN 10*C, POLYMERIZED FROM A MONOMER MIX COMPRISING AT LEAST ABOUT 50 WEIGHT PERCENT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARALKYL ACRYLATE AND MIXTURE THEREOF, ABOUT 0.05 TO 5.0 WEIGHT PERCENT OF CROSS-LINKING MONOMER, ABOUT 0.05 TO 5.0 WEIGHT PERCENT OF GRAFT-LINKING MONOMER, ABOUT 0 TO 10.0 WEIGHT PERCENT HYDROPHILIC MONOMER, AND THE BALANCE OTHER COPOLYMERIZABLE ETHYLENICALY UNSATURATED MONOMER; AND FURTHER CHARACTERIZED IN THAT THE INITIAL MONOMER MIXTURE OF SAID PHASE HAS PRESENT AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARALKYL ACRYLATE AND MIXTURES THEREOF, A CROSS-LINKING MONOMER AND A GRAFT-LINKING MONOMER, SAID CROSS-LINKING MONOMER BEING A POLYETHYLENICALLY UNSATURATED MONOMER HAVING A PLURALITY OF ADDITION POLYMERIZABLE REACTIVE GROUPS ALL OF WHICH POLYMERIZE AT SUBSTANTIALLY THE SAME RATE OF REACTION AND WHEREIN SAID GRAFT-LINKING MONOMER BEING A POLYETHYLENICALLY UNSATURATED MONOMER HAVING A PLURALITY OF ADDITION POLYMERIZABLE REACTIVE GROUPS, AT LEAST ONE OF WHICH POLYMERIZES AT A SUBSTANTIALLY DIFFERENT RATE OF POLYMERIZATION FROM AT LEAST ONE OTHER OF SAID REACTIVE GROUPS; (B) A FINAL, RIGID THERMOPLASTIC PHASE POLYMERIZED IN THE PRESENCE OF SAID ELASTOMERIC PHASE FROM A MONOMER MIX COMPRISING AT LEAST ABOUT 50 WEIGHT PERCENT ALKYL METHACRYLATE WHEREIN SAID ELASTOMERIC PHASE AND SAID THERMOPLASTIC PHASE HAVE A MINIMUM CHEMICAL ATTACHMENT LEVEL OF ABOUT 20 PERCENT.
Claim 3
Dependent Claim
47 words
A composition according to claim 1 wherein said rigid thermoplastic is selected from the group consisting of poly(methylmethacrylate), copolymers polymerized from the monomers comprising at least about 50 weight percent methylmethacrylate, poly(vinyl halide), and copolymers polymerized from monomers comprising at least about 80 weight percent vinyl halide.
Claim 4
Dependent Claim
28 words
A composition according to claim 1 comprising 10 to 99 weight percent of the rigid thermoplastic polymer with about 90 to 1 weight percent of the composite interpolymer.
Claim 5
Dependent Claim
32 words
A composition according to claim 1 wherein in the composite interpolymer, said elastomeric phase is a single phase polymerized from a monomer emulsion comprising about 50 to 99.9 weight percent alkyl acrylate.
Claim 6
Dependent Claim
13 words
A composition according to claim 4 wherein said alkyl acrylate is butyl acrylate.
Claim 7
Dependent Claim
22 words
A composition according to claim 5 wherein said final rigid phase is polymerized from at least about 50 weight percent methyl methacrylate.
Claim 8
Dependent Claim
153 words
A composition according to claim 1 wherein said composite interpolymer comprises (a) about 50 to 80 weight percent of a first, elastomeric phase polymerized from a first monomer emulsion comprising about 50 to 94.3 weight percent n-butyl acrylate, about 5 to 20 weight percent styrene, about 0.1 to 1.0 weight percent butylene diacrylate, about 0.1 to 1.0 weight percent allyl methacrylate, and 0.5 to 5.0 weight percent of a hydrophilic monomer selected from the group consisting of addition polymerizable amides and hydroxy alkyl esters of methacrylic acid and mixtures thereof, and (b) about 20 to 50 weight percent of a final, rigid thermoplastic phase, polymerized in the presence of said elastomeric phase from a monomer emulsion comprising about 90 to 98 weight percent methyl methacrylate and about 10 to 2 weight percent ethyl acrylate, wherein said elastomeric phase and said rigid thermoplastic phase have a minimum chemical attachment level of about 20 percent.
Claim 9
Dependent Claim
42 words
A composition according to claim 1 wherein in said interpolymer, said ethylenically unsaturated comonomer is selected from the group consisting of styrene, substituted styrene, vinyl esters, vinyl ethers, vinyl amides, vinyl ketones, vinyl halides, vinylidene halides, olefins, acrylonitrile, methacrylonitrile, and mixtures thereof.
Claim 10
Dependent Claim
54 words
A composition according to claim 1 wherein in said interpolymer, said first, elastomeric phase is polymerized from said monomer mix to the substantial depletion of the monomers and thereafter said last, rigid thermoplastic phase is polymerized from said monomer mix, in the presence of said elastomeric phase, to the substantial depletion of said monomers.
Claim 11
Dependent Claim
40 words
A composition according to claim 1 wherein in said interpolymer, said hydrophilic monomer is selected from the group consisting of addition polymerizable amides of ethylenically unsaturated carboxylic acids, the hydroxy alkyl esters of ethylenically unsaturated carboxylic acids, and mixtures thereof.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |