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US4303560A Expired / Lapsed US ⏱️ 0.0 years remaining

Rubbery polymer composition

Assignee: Denka Co Ltd
•
Filing: 1979-11-16
•
Granted: 1981-12-01
•
Expires: 1999-11-16
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Abstract

Abstract A rubbery polymer composition comprises a crosslinked copolymer comprising the following components. Type I 15 to 40 wt. parts of a vinyl carboxylate having the formula (I); 60 to 85 wt. parts of an alkoxyalkyl acrylate having the formula (II); 0 to 15 wt. parts of ethylene; (100 wt. parts of a total of said three components); 0 to 5 wt. parts of the components having the formula (III), (IV) or (V): Type II 15 to 55 wt. parts of a vinyl carboxylate having the formula (I); 5 to 20 wt. parts of ethylene; an alkyl acrylate having the formula (II'); an alkoxyalkyl acrylate having the formula (II) (100 wt. parts of a total of said four components and more than 0.8 of a ratio of the alkoxyalkyl acrylate (II) to the alkyl acrylate (II') by weight); 0 to 5 wt. parts of the components having the formula (III), (IV) or (V): (I): RCOO--CH═CH 2 wherein R represents a C 1-4 alkyl group. (II): CH 2 ═CHCOO--R 1 --O--R 2 wherein R 1 represents a C 1-4 alkylene group; and R 2 represents a C 1-4 alkyl or alkoxyalkyl group. (II'): CH 2 ═CHCOO--R 6 wherein R 6 represents a C 3-8 alkyl group. ##STR1## wherein R 3 represents hydrogen atom or methyl group. ##STR2## wherein R 4 represents vinyl, allyl or methallyl group. (V): CH 2 ═CH--O--R 5 wherein R 5 represents CH 2 Cl--CH 2 -- or CH 2 Cl--CO-- group.

Inventors

  • 👤 Kohki Takahashi
  • 👤 Takeo Kondoh
  • 👤 Masao Koga
  • 👤 Kenichiro Nishiwaki

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 13:45
CPC Classifications
C; C08; C08L; C08L31/00; C08L31/02; C08L33/00; C08L33/04; C08L33/14

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 184 words
A rubbery polymer composition consisting essentially of a crosslinkable copolymer of Type II: Type II 15 to 55 wt. parts of a vinyl carboxylate having the formula (I); 5 to 20 wt. parts of ethylene; an alkyl acrylate having the formula (II'); an alkoxyalkyl acrylate having the formula (II) (100 wt. parts of a total of said four components and more than 0.8 of a ratio of the alkoxyalkyl acrylate (II) to the alkyl acrylate (II') by weight); 0 to 5 wt. parts of the components having the formula (III), (IV) or (V): (I): RCOO-CH═CH 2 wherein R represents a C 1-4 alkyl group (II): CH 2 ═CHCOO--R 1 O--R 2 wherein R 1 represents a C 1-4 alkylene group; and R 2 represents a C 1-4 alkyl or alkoxyalkyl group (II'): CH 2 ═CHCOO--R 6 wherein R 6 represents a C 3-8 alkyl group ##STR5## wherein R 3 represents hydrogen atom or methyl group ##STR6## wherein R 4 represents vinyl, allyl or methallyl group (V): CH 2 ═CH--O--R 5 wherein R 5 represents CH 2 Cl--CH 2 -- or CH 2 Cl--CO-- group.
Claim 2
Dependent Claim 184 words
A rubbery polymer composition consisting essentially of a crosslinkable copolymer of Type II: Type II 15 to 55 wt. parts of a vinyl carboxylate having the formula (I); 5 to 20 wt. parts of ethylene; an alkyl acrylate having the formula (II'); an alkoxyalkyl acrylate having the formula (II) (100 wt. parts of a total of said four components and more than 0.8 of a ratio of the alkoxyalkyl acrylate (II) to the alkyl acrylate (II') by weight); 0 to 5 wt. parts of the components having the formula (III), (IV) or (V): (I): RCOO-CH═CH 2 wherein R represents a C 1-4 alkyl group (II): CH 2 ═CHCOO--R 1 O--R 2 wherein R 1 represents a C 1-4 alkylene group; and R 2 represents a C 1-4 alkyl or alkoxyalkyl group (II'): CH 2 ═CHCOO--R 6 wherein R 6 represents a C 3-8 alkyl group ##STR5## wherein R 3 represents hydrogen atom or methyl group ##STR6## wherein R 4 represents vinyl, allyl or methallyl group (V): CH 2 ═CH--O--R 5 wherein R 5 represents CH 2 Cl--CH 2 -- or CH 2 Cl--CO-- group.
Claim 3
Dependent Claim 26 words
A rubbery polymer composition according to claim 1 wherein a crosslinking agent is incorporated at a ratio of 0.3 to 10 wt.% based on said copolymer.
Claim 4
Dependent Claim 24 words
A rubbery polymer composition according to claim 2 wherein said crosslinking agent is a peroxide type crosslinking agent or an epoxide ring cleavage agent.
Claim 5
Dependent Claim 26 words
A rubbery polymer composition according to claim 1 wherein a reinforcing agent is incorporated at a ratio of 10 to 200 wt.% based on said copolymer.
Claim 6
Dependent Claim 21 words
A rubbery polymer composition according to claim 4 wherein said reinforcing agent is carbon, silicic acid, clay, calcium, carbonate or talc.
Claim 7
Dependent Claim 13 words
A rubbery polymer composition according to claim 1 wherein an antioxidant is incorporated.
Claim 8
Dependent Claim 26 words
A rubbery polymer composition according to claim 1 further containing suitable additives wherein the additives are incorporated into the composition by the wet master batch method.
Claim 9
Dependent Claim 40 words
A rubbery polymer composition according to claim 3 wherein another rubbery polymer selected from the group consisting of EPDM rubber, NBR rubber, chloroprene rubber, natural rubber, SB rubber, butadiene rubber, butyl rubber and isoprene rubber is blended to said copolymer.

References Cited (Backward Citations)

US2440092A Cited
US2565259A Cited
GB1175545A Cited
US3493548A Cited
US3488311A Cited
US3450681A Cited
US3779992A Cited
US3957711A Cited
US4073779A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-11-30 1985-06-01 1985-12-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-11-30 1989-06-01 1989-12-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-11-30 1993-06-01 1993-12-01 $7700.00 Window Closed / Lapsed

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