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US4222915A Expired / Lapsed US ⏱️ 0.0 years remaining

Vulcanizable halorubber mixtures

Assignee: Evonik Operations GmbH
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Filing: 1979-05-02
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Granted: 1980-09-16
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Expires: 1999-05-02
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Abstract

Abstract There are prepared vulcanizable rubber containing mixtures comprising at least one halogen rubber, at least one silicate filler in an amount of 1 to 250 parts by weight, magnesium oxide, zinc oxide or lead oxide in an amount of 0.1 to 15 parts by weight, sulfur in an amount of 0 to 15 parts by weight, stearic acid or other higher fatty acid, benzoic acid or salicylic acid in an amount of 0 to 10 parts by weight, at least one vulcanization accelerator in an amount of 0 to 10 parts by weight, at least one plasticizer in an amount of 0 to 100 parts by weight, at least one stabilizer from the group consisting of antiagers, fatigue inhibitors, antioxidants, light protecting agents and ozone protecting agents in an amount of 0 to 10 parts by weight, carbon black in an amount of 0 to 150 parts by weight and at least one organosilane having the formula X--C.sub.m H.sub.2m --SiR.sub.n.sup.1 (OR).sub.3-n, while X is chlorine, bromine or iodine, m is a number from 1 to 5, R 1 is a C 1 to C 5 -alkyl group, a C 5 --C 8 -cycloalkyl group or the phenyl group, R is a C 1 to C 8 alkyl group, a C 5 to C 8 -cycloalkyl group, the methoxyethyl group, the phenyl group or the benzyl group and n is 0, 1 or 2, in an amount of 0.1 to 20 parts by weight, all amounts being based on 100 parts by weight of the halogen rubber.

Inventors

  • 👤 Siegfried Wolff
  • 👤 Ewe H. Tan

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 12:22
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08K5/5406

Claims Analysis

Total Claims: 30
Claim 1
Independent Claim 216 words
A vulcanizable rubber composition comprising at least one halogen containing rubber, at least one silicate filler in an amount of 1 to 250 parts by weight, 0.1 to 15 parts by weight magnesium oxide, lead oxide or zinc oxide, 0 to 15 parts by weight sulfur, 0 to 10 parts by weight of a higher fatty acid, benzoic acid or salicylic acid, 0 to 10 parts by weight of a vulcanization accelerator, 0 to 100 parts by weight of a plasticizer, 0 to 10 parts by weight of a stabilizer selected from the group consisting of antiagers, fatigue inhibitors, antioxidants, light protecting agents and ozone protecting agent, 0 to 150 parts by weight of carbon black and 0.1 to 20 parts by weight of an organosilane having the formula X--C.sub.m H.sub.2m --SiR.sub.n.sup.1 (OR).sub.3-n where X is chlorine, bromine or iodine, m is a number from 1 to 5, R 1 is a C 1 to C 5 -alkyl group, a C 5 -C 8 -cycloalkyl group or the phenyl group, R is a C 1 to C 8 -alkyl group, a C 5 to C 8 -cycloalkyl group, the phenyl group or the benzyl group and n is 0, 1 or 2, all amounts being based on 100 parts by weight of the halogen containing rubber.
Claim 2
Dependent Claim 216 words
A vulcanizable rubber composition comprising at least one halogen containing rubber, at least one silicate filler in an amount of 1 to 250 parts by weight, 0.1 to 15 parts by weight magnesium oxide, lead oxide or zinc oxide, 0 to 15 parts by weight sulfur, 0 to 10 parts by weight of a higher fatty acid, benzoic acid or salicylic acid, 0 to 10 parts by weight of a vulcanization accelerator, 0 to 100 parts by weight of a plasticizer, 0 to 10 parts by weight of a stabilizer selected from the group consisting of antiagers, fatigue inhibitors, antioxidants, light protecting agents and ozone protecting agent, 0 to 150 parts by weight of carbon black and 0.1 to 20 parts by weight of an organosilane having the formula X--C.sub.m H.sub.2m --SiR.sub.n.sup.1 (OR).sub.3-n where X is chlorine, bromine or iodine, m is a number from 1 to 5, R 1 is a C 1 to C 5 -alkyl group, a C 5 -C 8 -cycloalkyl group or the phenyl group, R is a C 1 to C 8 -alkyl group, a C 5 to C 8 -cycloalkyl group, the phenyl group or the benzyl group and n is 0, 1 or 2, all amounts being based on 100 parts by weight of the halogen containing rubber.
Claim 3
Dependent Claim 26 words
A vulcanizable composition according to claim 1 wherein R 1 is C 1 to C 5 -alkyl and R is C 1 to C 5 -alkyl.
Claim 4
Dependent Claim 11 words
A vulcanizable composition according to claim 2 wherein n is 0.
Claim 5
Dependent Claim 13 words
A vulcanizable composition according to claim 3 wherein m is 2 or 3.
Claim 6
Dependent Claim 15 words
A vulcanizable composition according to claim 4 wherein R is ethoxy and X is chlorine.
Claim 7
Dependent Claim 19 words
A vulcanizable composition according to claim 5 wherein the halogen containing rubber is polychlorobutadiene, chlorobutyl rubber or bromobutyl rubber.
Claim 8
Dependent Claim 18 words
A vulcanizable composition according to claim 6 wherein the silicate is precipitated silica, precipitated aluminum silicate or kaolin.
Claim 9
Dependent Claim 11 words
A vulcanizable composition according to claim 7 free from carbon black.
Claim 10
Dependent Claim 10 words
A vulcanizable composition according to claim 7 containing carbon black.
Claim 11
Dependent Claim 13 words
A vulcanizable composition according to claim 7 wherein the silicate is precipitated silica.
Claim 12
Dependent Claim 28 words
A vulcanizable composition according to claim 1 wherein the rubber is brominated or chlorinated butyl rubber, chlorinated natural rubber, rubber hydrochloride, a polymer of 2-chlorobutadiene-1,3 or chlorosulfonated polyethylene.
Claim 13
Dependent Claim 10 words
A vulcanizable composition according to claim 11 containing zinc oxide.
Claim 14
Dependent Claim 10 words
A vulcanizable composition according to claim 11 containing magnesium oxide.
Claim 15
Dependent Claim 14 words
A vulcanizable composition according to claim 11 containing both zinc oxide and aluminum oxide.
Claim 16
Dependent Claim 11 words
A vulcanizable composition according to claim 11 free from carbon black.
Claim 17
Dependent Claim 10 words
A vulcanizable composition according to claim 11 containing carbon black.
Claim 18
Dependent Claim 10 words
A vulcanizable composition according to claim 11 containing stearic acid.
Claim 19
Dependent Claim 11 words
A vulcanizable composition according to claim 11 containing a vulcanization accelerator.
Claim 20
Dependent Claim 11 words
The vulcanized product obtained by vulcanizing the composition of claim 1.
Claim 21
Dependent Claim 11 words
The vulcanized product obtained by vulcanizing the composition of claim 3.
Claim 22
Dependent Claim 11 words
The vulcanized product obtained by vulcanizing the composition of claim 4.
Claim 23
Dependent Claim 11 words
The vulcanized product obtained by vulcanizing the composition of claim 6.
Claim 24
Dependent Claim 11 words
The vulcanized product obtained by vulcanizing the composition of claim 7.
Claim 25
Dependent Claim 11 words
The vulcanized product obtained by vulcanizing the composition of claim 10.
Claim 26
Dependent Claim 11 words
The vulcanized product obtained by vulcanizing the composition of claim 11.
Claim 27
Dependent Claim 11 words
The vulcanized product obtained by vulcanizing the composition of claim 12.
Claim 28
Dependent Claim 11 words
The vulcanized product obtained by vulcanizing the composition of claim 15.
Claim 29
Dependent Claim 11 words
The vulcanized product obtained by vulcanizing the composition of claim 16.
Claim 30
Dependent Claim 26 words
A process of vulcanizing the composition of claim 1 comprising heating the composition of claim 1 at 100° to 200° C. for 1 to 200 minutes.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-09-16 1984-03-17 1984-09-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-09-16 1988-03-17 1988-09-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-09-16 1992-03-17 1992-09-16 $7700.00 Window Closed / Lapsed

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