US3864429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blend of polyvinyl chloride resins with mercaptan-modified MBS resins
Assignee: Kureha Corp
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Filing: 1973-02-12
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Granted: 1975-02-04
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Expires: 1993-02-12
Abstract
Abstract A high impact-resistant vinyl chloride polymer resin composition having an excellent weather resistance which is composed of from 3 to 30 weight parts of a modified MBS resin obtained from addition-reaction of an alkyl mercaptan containing from 2 to 20 carbon atoms with a butadiene-styrenemethyl methacrylate resin, and from 97 to 70 weight parts of a vinyl chloride resin.
Inventors
- 👤 Takashi Tanaka
- 👤 Shinichi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:16
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L51/00; C08L51/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
128 words
AN IMPACT-RESISTANT VINYL CHLORIDE POLYMER RESIN COMPOSITION HAVING IMPROVED WEATHER RESISTANCE WHICH COMPRISES A BBLEND OF A (A) FROM 3 TO 30 PARTS BY WEIGHT OF A MODIFIED MBS RESIN OBTAINED FROM AN ADDITION-REACTION OF AN ALKYL MERCAPTAN HAVING 2 TO 20 CARBON ATOMS WITH A BUTADIENE-STYRENEMETHYL METHACRYLATE GRAFTPOLYMER RESIN, THE AMOUNT OF ALKYL MERCAPTAN BEING 1/100 TO 1 MOLE PER MOLE OF CONJUGATED DIOLEFIN IN THE MBS RESIN AND (b) FROM 97 TO 70 PARTS BY WEIGHT OF A VINYL CHLORIDE HOMOPOLYMER OR COPOLYMER RESIN WHEREIN SAID COPOLYMER OR VINYL CHLORIDE IS A COPOLYMER OF A MAJOR QUANTITY OF VINYL CHLORIDE AND A MINOR QUANTITY OF ANOTHER MONOMER SELECTED FROM THE GROUP CONSISTING OF VINYLIDENE CHLORIDE, ACRYLIC ESTERS, METHACRYLIC ESTERS, FATTY ACID VINYL ESTERS, ACRYLONITRILE AND MONO-OLEFINS.
Claim 2
Dependent Claim
128 words
AN IMPACT-RESISTANT VINYL CHLORIDE POLYMER RESIN COMPOSITION HAVING IMPROVED WEATHER RESISTANCE WHICH COMPRISES A BBLEND OF A (A) FROM 3 TO 30 PARTS BY WEIGHT OF A MODIFIED MBS RESIN OBTAINED FROM AN ADDITION-REACTION OF AN ALKYL MERCAPTAN HAVING 2 TO 20 CARBON ATOMS WITH A BUTADIENE-STYRENEMETHYL METHACRYLATE GRAFTPOLYMER RESIN, THE AMOUNT OF ALKYL MERCAPTAN BEING 1/100 TO 1 MOLE PER MOLE OF CONJUGATED DIOLEFIN IN THE MBS RESIN AND (b) FROM 97 TO 70 PARTS BY WEIGHT OF A VINYL CHLORIDE HOMOPOLYMER OR COPOLYMER RESIN WHEREIN SAID COPOLYMER OR VINYL CHLORIDE IS A COPOLYMER OF A MAJOR QUANTITY OF VINYL CHLORIDE AND A MINOR QUANTITY OF ANOTHER MONOMER SELECTED FROM THE GROUP CONSISTING OF VINYLIDENE CHLORIDE, ACRYLIC ESTERS, METHACRYLIC ESTERS, FATTY ACID VINYL ESTERS, ACRYLONITRILE AND MONO-OLEFINS.
Claim 3
Dependent Claim
30 words
The composition as defined in claim 1, in which said alkyl mercaptan is selected from the group consisting of ethyl mercaptan, n-octyl mercaptan, n-decyl mercaptan, t-dodecyl mercaptan, and myristyl mercaptan.
Claim 4
Dependent Claim
29 words
The composition as defined in claim 1, in which the amount of alkyl mercaptan is 1/100 to 1/2 mole per mole of the conjugated diolefin in the MBS resin.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |