Patent EP0203737A2 successfully refreshed from Google Patents.
EP0203737A2
Expired / Lapsed
EP
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Radiation grafting of organopolysiloxanes
Assignee: Raychem Corp
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Filing: 1986-05-01
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Granted: —
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Expires: 2006-05-01
Abstract
Abstract This invention provides for the radiation grafting of certain organopolysiloxanes to polymeric supports. The organopolysiloxane material is partially crosslinked mixture which contains from about 10% to about 90% by weight of uncrosslinked organopolysiloxane oil and has a cone penetration of about 100 to about 350 (10 -1 mm) and an ultimate elongation of at least about 100%. The organopolysiloxane fluid may be placed on the polymeric support and crosslinked to produce an organopolysiloxane material having the above properties and being bonded to the polymeric support. The organopolysiloxane material also can be crosslinked to the above properties by conventional means then placed in contact with the polymeric support and irradiated to crosslink the material to the polymeric support without substantially changing the properties of the organopolysiloxane material.
Inventors
- 👤 Robert S. Dubrow
- 👤 William David Uken
- 👤 Catherine A. Dittmer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 19:03
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J2483/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
94 words
A method of forming an organopolysiloxane material bonded to a polymeric support comprising placing an organopolysiloxane fluid on a polymeric support; and irradiating said fluid and support with ultraviolet light or high energy radiation to crosslink a portion of said fluid to produce a material which is bonded to said support and which comprises a mixture of crosslinked organopolysiloxane and from about 10% to about 90% by weight uncrosslinked organopolysiloxane oil and has a cone penetraton between about 100 and about 350 (10- 1 mm) and an ultimate elongation of at least about 100%.
Claim 2
Independent Claim
94 words
A method of forming an organopolysiloxane material bonded to a polymeric support comprising placing an organopolysiloxane fluid on a polymeric support; and irradiating said fluid and support with ultraviolet light or high energy radiation to crosslink a portion of said fluid to produce a material which is bonded to said support and which comprises a mixture of crosslinked organopolysiloxane and from about 10% to about 90% by weight uncrosslinked organopolysiloxane oil and has a cone penetraton between about 100 and about 350 (10- 1 mm) and an ultimate elongation of at least about 100%.
Claim 3
Dependent Claim
19 words
A method according to claim 1 wherein the uncrosslinked organopolysiloxane oil is present between about 25% and about 75%.
Claim 4
Dependent Claim
27 words
A method according to claim 1 or 2, wherein the organopolysiloxane comprises a polydimethylsiloxane and up to about 5% of the polydimethylsiloxane is terminated with divinylmethylsiloxane groups.
Claim 5
Independent Claim
18 words
A method according to any preceding claim, wherein the irradiation is by ultraviolet light or an electron beam.
Claim 6
Independent Claim
102 words
A method of bonding an organopolysiloxane material to a polymeric support comprising contacting a polymeric support with material comprising a mixture of crosslinked organopolysiloxane and from about 10% to about 90% by weight uncrosslinked organopolysiloxane oil and having a cone penetration between about 100 and about 350 (10- 1 mm) and an ultimate elongation of at least about 100%; and irradiating said polymeric support and organopolysiloxane material with ultraviolet light or high energy radiation sufficient to effect a bond of the organopolysiloxane material to the polymeric support but without substantially changing the cone penetration and ultimate elongation values of the organopolysiloxane material.
Claim 7
Independent Claim
102 words
A method of bonding an organopolysiloxane material to a polymeric support comprising contacting a polymeric support with material comprising a mixture of crosslinked organopolysiloxane and from about 10% to about 90% by weight uncrosslinked organopolysiloxane oil and having a cone penetration between about 100 and about 350 (10- 1 mm) and an ultimate elongation of at least about 100%; and irradiating said polymeric support and organopolysiloxane material with ultraviolet light or high energy radiation sufficient to effect a bond of the organopolysiloxane material to the polymeric support but without substantially changing the cone penetration and ultimate elongation values of the organopolysiloxane material.
Claim 8
Dependent Claim
19 words
A method according to claim 5 wherein the uncrosslinked organopolysiloxane oil is present between about 25% and about 75%.
Claim 9
Dependent Claim
27 words
A method according to claim 5 or 6 wherein the organopolysiloxane comprises a polydimethylsiloxane and up to about 5% of the polydimethylsiloxane is terminated with divinylmethylsiloxane groups.
Claim 10
Dependent Claim
20 words
A method according to claim 5, 6 or 7 wherein the irradiation is by ultraviolet light or an electron beam.
Claim 11
Dependent Claim
50 words
An article comprising a polymeric support and grafted thereon a mixture of a crosslinked organopolysiloxane and from about 10 to about 90% by weight uncrosslinked organopolysiloxane oil which mixture has a cone penetration of about 100 to 350 (10- 1 mm) and an ultimate elongation of at least about 100%.
Claim 12
Dependent Claim
50 words
An article comprising a polymeric support and grafted thereon a mixture of a crosslinked organopolysiloxane and from about 10 to about 90% by weight uncrosslinked organopolysiloxane oil which mixture has a cone penetration of about 100 to 350 (10- 1 mm) and an ultimate elongation of at least about 100%.
Claim 13
Dependent Claim
19 words
An article according to claim 9 wherein the uncrosslinked organopolysiloxane oil is present between about 25% and about 75%.
Claim 14
Dependent Claim
30 words
An article according to claim 9 or 10 wherein wherein the organopolysiloxane material comprises a polydi- methysiloxane and up to about 5% of the polydimethylsiloxane is terminated with divinylmethylsiloxane groups.
Claim 15
Dependent Claim
22 words
An article according to any one of claims 9 to 11 wherein the irradiation is by ultraviolet light or an electron beam.
Claim 16
Dependent Claim
21 words
An article according to any one of claims 9 to 12 wherein the article is in the form of a tape.
References Cited (Backward Citations)
No citation records indexed.
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