US3928494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyblend of two types of ABS graft polymers and a copolymer matrix
Assignee: Monsanto Co
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Filing: 1974-04-22
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Granted: 1975-12-23
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Expires: 1994-04-22
Abstract
Abstract A polyblend of the ABS-type having a matrix phase of a styrene/acrylonitrile type resin and two dispersed phases therein. One dispersed phase is a highly grafted alkadiene rubber, the other dispersed phase is a lowly grafted homopolybutadiene rubber which is agglomerated to particle sizes in the range from about 0.6 to 3.0 micron. The graft superstrate on both dispersed phases is formed by styrene and acrylonitrile type monomers. These polyblends display a combination of low temperature impact strength and room temperature tensile strength.
Inventors
- 👤 Vincent A Aliberti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:45
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08F; C08F279/00; C08F279/02; C08F279/04; C08L33/00; C08L33/18; C08L33/20; C08L55/00; C08L55/02; C08L2205/00; C08L2205/02
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
162 words
AN IMPROVED POLYBLEND ADAPTED TO DISPLAY A COMBINATION OF LOW TEMPERATURE IMPACT STRENGTH AND ROOM TEMPERATURE TENSILE STRENGTH COMPRISING (ON A 100 WEIGHT PERCENT TOTAL POLYBLENDED BASIS) FROM ABOUT 40 TO 89 WEIGHT PERCENT OF A MATRIX PHASE COMPRISING COPOLYMER OF STYRENE AND ACRYLONITRILE HAVING A WEIGHT AVERAGE MOLEUCLAR WEIGHT OF FROM ABOUT 75,000 TO 300,000 AND A WEIGHT RATIO OF STYRENE TO ACRYLONITRILE OF FROM ABOUT 95:5 TO 30:70, WITH THE BALANCE UP TO 100 WEIGHT PERCENT THEREOF BEING A MIXTURE OF A FIRST GRAFT COPOLYMER WITH A SECOND GRAFT COPOLYMER, SAID GRAFT COPOLYMERS BEING DISPERSED THROUGHOUT SAID STYRENE/ACRYLONITRILE COPOLYMER WHER SAID POLYBLEND IS IN A HEAT-FUSED FORM, THE WEIGHT RATIO OF SAID FIRST GRAFT COPOLYMER TO SAID SECOND GRAFT COPOLYMER IN SAID POLYBLEND RANGING FROM ABOUT 85:15 TO 5:95, SAID POLYBLEND HAVING A TOTAL ELASTOMER CONTENT (UNGRAFTED BASIS) RANGING FROM ABOUT 10 TO 30 WEIGHT PERCENT (BASED ON TOTAL) POLYBLEND), A. SAID FIRST GRAFT COPOLYMER PARTICLES BEING CHARACTERIZED BY HAVING
Claim 2
Dependent Claim
162 words
AN IMPROVED POLYBLEND ADAPTED TO DISPLAY A COMBINATION OF LOW TEMPERATURE IMPACT STRENGTH AND ROOM TEMPERATURE TENSILE STRENGTH COMPRISING (ON A 100 WEIGHT PERCENT TOTAL POLYBLENDED BASIS) FROM ABOUT 40 TO 89 WEIGHT PERCENT OF A MATRIX PHASE COMPRISING COPOLYMER OF STYRENE AND ACRYLONITRILE HAVING A WEIGHT AVERAGE MOLEUCLAR WEIGHT OF FROM ABOUT 75,000 TO 300,000 AND A WEIGHT RATIO OF STYRENE TO ACRYLONITRILE OF FROM ABOUT 95:5 TO 30:70, WITH THE BALANCE UP TO 100 WEIGHT PERCENT THEREOF BEING A MIXTURE OF A FIRST GRAFT COPOLYMER WITH A SECOND GRAFT COPOLYMER, SAID GRAFT COPOLYMERS BEING DISPERSED THROUGHOUT SAID STYRENE/ACRYLONITRILE COPOLYMER WHER SAID POLYBLEND IS IN A HEAT-FUSED FORM, THE WEIGHT RATIO OF SAID FIRST GRAFT COPOLYMER TO SAID SECOND GRAFT COPOLYMER IN SAID POLYBLEND RANGING FROM ABOUT 85:15 TO 5:95, SAID POLYBLEND HAVING A TOTAL ELASTOMER CONTENT (UNGRAFTED BASIS) RANGING FROM ABOUT 10 TO 30 WEIGHT PERCENT (BASED ON TOTAL) POLYBLEND), A. SAID FIRST GRAFT COPOLYMER PARTICLES BEING CHARACTERIZED BY HAVING
Claim 3
Dependent Claim
12 words
A NUMBER AVERAGE PARTICLE SIZE OF FROM ABOUT 0.03 TO 0.6 MICRON,
Claim 4
Dependent Claim
12 words
A NUMBER AVERAGE PARTICLE SIZE OF FROM ABOUT 0.03 TO 0.6 MICRON,
Claim 5
Dependent Claim
27 words
A NUMBER AVERAGE PARTICLE SIZE OF FROM ABOUT 0.6 TO 3.0 MICRONS, AND AT LEAST HALF OF SUCH PARTICLES HAVE A PARTICLE SIZE ABOVE ABOUT 0.8 MICRON,
Claim 6
Dependent Claim
27 words
A NUMBER AVERAGE PARTICLE SIZE OF FROM ABOUT 0.6 TO 3.0 MICRONS, AND AT LEAST HALF OF SUCH PARTICLES HAVE A PARTICLE SIZE ABOVE ABOUT 0.8 MICRON,
Claim 7
Dependent Claim
10 words
A SUBSTRATE ELASTOMER COMPRISING HOMOPOLYALKADIENE AS THE SOLE SUBSTRATE, AND
Claim 8
Dependent Claim
10 words
A SUBSTRATE ELASTOMER COMPRISING HOMOPOLYALKADIENE AS THE SOLE SUBSTRATE, AND
Claim 9
Dependent Claim
47 words
a substrate elastomer comprising a copolymer of from about 70 to 98 weight percent of a conjugated alkadiene with, correspondingly, from about 30 to 2 weight percent based on total substrate elastomer weight of at least one compound selected from the group consisting of styrene and acrylonitrile,
Claim 10
Dependent Claim
47 words
a substrate elastomer comprising a copolymer of from about 70 to 98 weight percent of a conjugated alkadiene with, correspondingly, from about 30 to 2 weight percent based on total substrate elastomer weight of at least one compound selected from the group consisting of styrene and acrylonitrile,
Claim 11
Dependent Claim
47 words
A SUBSTRATE ELASTOMER COMPRISING A COPOLYMER OF FROM ABOUT 70 TO 98 WEIGHT PERCENT OF A CONJUGATED ALKADIENE WITH, CORRESPONDINGLY, FROM ABOUT 30 TO 2 WEIGHT PERCENT BASED ON TOTAL SUBSTRATED ELASTOMER WEIGHT OF AT LEAST ONE COMP0UND SELECTED FROM THE GROUP CONSISTING OF STYRENE AND ACRYLONITRILE,
Claim 12
Dependent Claim
47 words
A SUBSTRATE ELASTOMER COMPRISING A COPOLYMER OF FROM ABOUT 70 TO 98 WEIGHT PERCENT OF A CONJUGATED ALKADIENE WITH, CORRESPONDINGLY, FROM ABOUT 30 TO 2 WEIGHT PERCENT BASED ON TOTAL SUBSTRATED ELASTOMER WEIGHT OF AT LEAST ONE COMP0UND SELECTED FROM THE GROUP CONSISTING OF STYRENE AND ACRYLONITRILE,
Claim 13
Dependent Claim
10 words
a substrate elastomer comprising homopolyalkadiene as the sole substrate, and
Claim 14
Dependent Claim
10 words
a substrate elastomer comprising homopolyalkadiene as the sole substrate, and
Claim 15
Dependent Claim
18 words
A polyblend of claim 1 where in the substrate elastomer of said first graft copolymer is butadiene/acrylonitrile copolymer.
Claim 16
Dependent Claim
10 words
The polyblend of claim 1 wherein said homopolyakladiene is homopolybutadiene.
Claim 17
Dependent Claim
33 words
said second graft copolymer particles being comprised of agglomerated grafted subparticles at least 90 weight percent of which have particle sizes in the range of from about 0.05 to 0.15 micron before agglomeration.
Claim 18
Dependent Claim
33 words
said second graft copolymer particles being comprised of agglomerated grafted subparticles at least 90 weight percent of which have particle sizes in the range of from about 0.05 to 0.15 micron before agglomeration.
Claim 19
Dependent Claim
23 words
A SUPERSTRATE GRAFTED TO SAID SUBSTRATE ELASTOMER AND COMPRISING POLYMERIZED STYRENE AND ACRYLONITRILE IN THE WEIGHT RATIO OF FROM ABOUT 95:5 TO 30:70,
Claim 20
Dependent Claim
23 words
A SUPERSTRATE GRAFTED TO SAID SUBSTRATE ELASTOMER AND COMPRISING POLYMERIZED STYRENE AND ACRYLONITRILE IN THE WEIGHT RATIO OF FROM ABOUT 95:5 TO 30:70,
Claim 21
Dependent Claim
23 words
a superstrate grafted to said substrate elastomer and comprising polymerized styrene and acrylonitrile in the weight ratio of from about 95:5 to 30:70,
Claim 22
Dependent Claim
23 words
a superstrate grafted to said substrate elastomer and comprising polymerized styrene and acrylonitrile in the weight ratio of from about 95:5 to 30:70,
Claim 23
Dependent Claim
33 words
SAID SECOND GRAFT COPOLYMER PARTICLES BEING COMPRISED OF AGGLOMERATED GRAFTED SUBPARTICLES AT LEAST 90 WEIGHT PERCENT OF WHICH HAVE PARTICLE SIZES IN THE RANGE OF FROM ABOUT 0.05 TO 0.15 MICRON BEFORE AGGLOMERATION.
Claim 24
Dependent Claim
33 words
SAID SECOND GRAFT COPOLYMER PARTICLES BEING COMPRISED OF AGGLOMERATED GRAFTED SUBPARTICLES AT LEAST 90 WEIGHT PERCENT OF WHICH HAVE PARTICLE SIZES IN THE RANGE OF FROM ABOUT 0.05 TO 0.15 MICRON BEFORE AGGLOMERATION.
Claim 25
Dependent Claim
89 words
there being from about 30 to 100 parts by weight of grafted superstrate for each 100 parts by weight of said substrate elastomer, wherein B. said second grafted copolymer particles being characterized by having a superstrate grafted to said substrate eLastomer and comprising polymerized styrene and acrylonitrile in the weight ratio of from about 95:5 to 30:70 and from about 3 to 30 parts by weight of grafted superstrate for each 100 parts by weight of said substrate elastomer, wherein the improvement comprises said second grafted copolymer particles having:
Claim 26
Dependent Claim
89 words
there being from about 30 to 100 parts by weight of grafted superstrate for each 100 parts by weight of said substrate elastomer, wherein B. said second grafted copolymer particles being characterized by having a superstrate grafted to said substrate eLastomer and comprising polymerized styrene and acrylonitrile in the weight ratio of from about 95:5 to 30:70 and from about 3 to 30 parts by weight of grafted superstrate for each 100 parts by weight of said substrate elastomer, wherein the improvement comprises said second grafted copolymer particles having:
Claim 27
Dependent Claim
89 words
THERE BEING FROM ABOUT 30 TO 100 PARTS BY WEIGHT OF GRAFTED SUPERSTRATE FOR EACH 100 PARTS BY WEIGHT OF SAID SUBSTRATE ELASTOMER, WHEREIN B. SAID SECOND GRAFTED COPOLYMER PARTICLES BEING CHARACTERIZED BY HAVING A SUPERSTRATE GRAFTED TO SAID SUBSTRATE ELASTOMER AND COMPRISING POLYMERIZED STYRENE AND ACRYLONITRILE IN THE WEIGHT RATIO OF FROM ABOUT 95:5 TO 30:70 AND FROM ABOUT 3 TO 30 PARTS BY WEIGHT OF GRAFTED SUPERSTRATE FOR EACH 100 PARTS BY WEIGHT OF SAID SUBSTRATE ELASTOMER, WHEREIN THE IMPROVEMENT COMPRISES SAID SECOND GRAFTED COPOLYMER PARTICLES HAVING:
Claim 28
Dependent Claim
89 words
THERE BEING FROM ABOUT 30 TO 100 PARTS BY WEIGHT OF GRAFTED SUPERSTRATE FOR EACH 100 PARTS BY WEIGHT OF SAID SUBSTRATE ELASTOMER, WHEREIN B. SAID SECOND GRAFTED COPOLYMER PARTICLES BEING CHARACTERIZED BY HAVING A SUPERSTRATE GRAFTED TO SAID SUBSTRATE ELASTOMER AND COMPRISING POLYMERIZED STYRENE AND ACRYLONITRILE IN THE WEIGHT RATIO OF FROM ABOUT 95:5 TO 30:70 AND FROM ABOUT 3 TO 30 PARTS BY WEIGHT OF GRAFTED SUPERSTRATE FOR EACH 100 PARTS BY WEIGHT OF SAID SUBSTRATE ELASTOMER, WHEREIN THE IMPROVEMENT COMPRISES SAID SECOND GRAFTED COPOLYMER PARTICLES HAVING:
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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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |