Patent EP0075486B1 successfully refreshed from Google Patents.
EP0075486B1
Expired / Lapsed
EP
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Process for preparing curable mixtures
Assignee: Polysar Ltd
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Filing: 1982-09-22
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Granted: 1988-08-17
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Expires: 2002-09-22
Abstract
No abstract record available.
Inventors
- 👤 Keith Alexander Callander
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 00:44
CPC Classifications
C; C08; C08L; C08L9/00; C08L9/02; C08J; C08J3/00; C08J3/20; C08J3/203; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; C08K3/34; C08K5/00; C08K5/0008; C08K5/0016; C08K5/04; C08K5/14; C08L61/00; C08L61/04; C08L61/06; C08L93/00; C08L93/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
213 words
Process for producing soft compounds which are curable by heat to rubbery elastomers, which process is characterized by the steps: (a) adding to a trough type blade mixer one or more inorgunic filler(s), organic tackifying resin(s), butadiene-acrylonitrile copolymer(s), organic peroxidic compound(s), and polymerizable monomer(s) having two or three polymerizable carbon-carbon double bonds, the amount of said polymerizable monomer(s) being from about 20 to about 60 parts by weight per 100 parts by weight of said copolymer(s), said trough type blade mixer being selected from sigma-blade mixers, Z-blade mixers, horizontal dispersion-blade mixers and double Naben-blade mixers; (b) initiating the mixing in said mixer and continuing mixing for a time of from about 5 to about 30 minutes; '(c) then adding to said mixer organic plasticizer(s) and continuing mixing for a time of from about 5 to about 30 minutes, the amount of said organic plasticizer(s) being from about 5 to about 40 parts by weight per 100 parts by weight of said copolymer(s); (d) then adding to said mixer organic peroxidic compound(s) and continuing mixing for a time of from about 5 to about 30 minutes; wherein said mixing is at a temperature of from about 20 to about 50°C; and removing the final mixture from said mixer as an essentially homogeneous soft compound.
Claim 2
Dependent Claim
213 words
Process for producing soft compounds which are curable by heat to rubbery elastomers, which process is characterized by the steps: (a) adding to a trough type blade mixer one or more inorgunic filler(s), organic tackifying resin(s), butadiene-acrylonitrile copolymer(s), organic peroxidic compound(s), and polymerizable monomer(s) having two or three polymerizable carbon-carbon double bonds, the amount of said polymerizable monomer(s) being from about 20 to about 60 parts by weight per 100 parts by weight of said copolymer(s), said trough type blade mixer being selected from sigma-blade mixers, Z-blade mixers, horizontal dispersion-blade mixers and double Naben-blade mixers; (b) initiating the mixing in said mixer and continuing mixing for a time of from about 5 to about 30 minutes; '(c) then adding to said mixer organic plasticizer(s) and continuing mixing for a time of from about 5 to about 30 minutes, the amount of said organic plasticizer(s) being from about 5 to about 40 parts by weight per 100 parts by weight of said copolymer(s); (d) then adding to said mixer organic peroxidic compound(s) and continuing mixing for a time of from about 5 to about 30 minutes; wherein said mixing is at a temperature of from about 20 to about 50°C; and removing the final mixture from said mixer as an essentially homogeneous soft compound.
Claim 3
Dependent Claim
16 words
Process as claimed in claim 1, characterized by that said mixer is a horizontal dispersion-blade mixer.
Claim 4
Dependent Claim
28 words
Process as claimed in claim 1 or 2, characterized in that said filler(s) is selected from silicas, calcium silicates, calcium carbonates, clays, talcs, and any mixture chosen therefrom.
Claim 5
Dependent Claim
34 words
Process as claimed in any one of claims 1 to 3, characterized by that said filler(s) is from about 50 to about 200 parts by weight per 100 parts by weight of said copolymer(s).
Claim 6
Dependent Claim
41 words
Process as claimed in any one of claims 1 to 5, characterized in that said tackifying resin(s) is selected from terpene-phenolic resins; terpene polymers; alkylphenol-formaldehyde resins; glycerol or pentaerythritol esters of rosin or of hydrogenated rosin; and any mixture chosen therefrom.
Claim 7
Dependent Claim
35 words
Process as claimed in any one of claims 1 to 6, characterized by that said tackifying resin(s) is from about 10 to about 50 parts by weight per 100 parts by weight of said copolymer(s).
Claim 8
Dependent Claim
32 words
A process as claimed in any one of claims 1 to 6, characterized by that said copolymer(s) to be utilized corresponds to from about 15 to about 40 weight percent of acrylonitrile.
Claim 9
Dependent Claim
32 words
Process as claimed in any one of claims 1 to 7, characterized by that said copolymer(s) to be utilized has a Mooney value (ML 1+4 @100°C) from about 35 to about 70.
Claim 10
Dependent Claim
37 words
Process as claimed in any one of claims 1 to 8, characterized by that said copolymer(s) to be utilized contains up to about 50 parts by weight of plasticizer(s) per 100 parts by weight of said copolymer(s).
Claim 11
Dependent Claim
48 words
Process as claimed in any one of claims 1 to 9, characterized by that said monomer(s) is selected from ethylene glycol di-acrylate or di-methacrylate; tetra-ethylene glycol di-acrylate or di-methacrylate; 1,3-butylene glycol di-acrylate or di-methacrylate; tri-methylol propane tri-acrylate or tri-methacrylate; pentaerythritol tri-acrylate or tri-methacrylate; and any mixture chosen therefrom.
Claim 12
Dependent Claim
37 words
Process as claimed in any one of claims 1 to 10, characterized by that said plasticizer(s) is selected from di-2-ethylhexyl phthalate or sebacate; di-butyl or di-butoxyethyl phthalate, sebacate, or adipate; di-butoxy-ethoxy-ethyl formal; and any mixture chosen therefrom.
Claim 13
Dependent Claim
31 words
Process as claimed in any one of claims 1 to 11, characterized by that said peroxidic compound(s) is selected from benzoyl peroxide, dicumyl peroxide, lucidyl peroxide, and any mixture chosen therefrom.
Claim 14
Dependent Claim
35 words
Process as claimed in any one of claims 1 to 12, characterized by that said peroxidic compound(s) is from about 0.5 to about 5.0 parts by weight per 100 parts by weight of said copolymer(s).
Claim 15
Dependent Claim
24 words
Rubbery elastomers, characterized by being thermal vulcanizate(s) of said soft compounds produced by a process as claimed in any-one of claims 1 to 13.
References Cited (Backward Citations)
No citation records indexed.
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