US4594134A
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Method for preparing a spherical cured polymer or a composition thereof containing linear organopolysiloxane blocks
Assignee: DuPont Toray Specialty Materials KK
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Filing: 1984-11-09
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Granted: 1986-06-10
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Expires: 2004-11-09
Abstract
Abstract Provided is a method for preparing a spherical cured product having a diameter of 5 mm or less of a polymer or a polymer composition containing at least 10 wt % of the linear organopolysiloxane blocks represented by the following general formula (1), characterized by curing in an atomized state a curable polymer or a curable polymer composition containing at least 10 wt % of the linear organopolysiloxane blocks represented by the following general formula (1): --R.sub.2 SiO].sub.n (1) wherein R's are the same or different monovalent hydrocarbon groups and n is an integer of 5 or more.
Inventors
- 👤 Tsuneo Hanada
- 👤 Yoshitsugu Morita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:02
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08L; C08L63/00; C08L83/00; C08L83/04; C08L83/10; C08G; C08G77/00; C08G77/42; C08G77/70; C08J2383/00; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
82 words
A method for preparing a spherical cured product having a diameter of 5 mm or less comprising curing, in an atomized state, a curable material selected from the group consisting of a curable polymer containing at least 10 weight percent of linear organopolysiloxane blocks having the structural formula --R.sub.2 SiO].sub.n wherein R's are the same or different and are monovalant hydrocarbon groups; and n is an integer of 5 or more; and a curable polymer composition, said composition including said curable Polymer.
Claim 2
Independent Claim
82 words
A method for preparing a spherical cured product having a diameter of 5 mm or less comprising curing, in an atomized state, a curable material selected from the group consisting of a curable polymer containing at least 10 weight percent of linear organopolysiloxane blocks having the structural formula --R.sub.2 SiO].sub.n wherein R's are the same or different and are monovalant hydrocarbon groups; and n is an integer of 5 or more; and a curable polymer composition, said composition including said curable Polymer.
Claim 3
Dependent Claim
16 words
A method as set forth in claim 1, wherein the curable organopolysiloxane is organopolysiloxane heat curable.
Claim 4
Dependent Claim
26 words
A method as set forth in claim 1 wherein said curable polymer is a curable organopolysiloxane and said curable organopolysiloxane composition is a curable organopolysiloxane composition.
Claim 5
Dependent Claim
31 words
A method as set forth in claim 3 wherein the curing reaction is a reaction selected from the group consisting of hydrosilylation, dehydration, deoximation and radical reaction by an organic peroxide.
Claim 6
Dependent Claim
19 words
A method as set forth in claim 3 wherein the curable organopolysiloxane is cured using irradiation with high-energy rays.
Claim 7
Dependent Claim
15 words
A method as set forth in claim 5, wherein the high-energy rays are ultraviolet rays.
Claim 8
Dependent Claim
19 words
A method as set forth in claim 1 wherein the curable polymer is a curable organopolysiloxane/organic resin block copolymer.
Claim 9
Dependent Claim
16 words
A method as set forth in claim 7, wherein the organic resin is an epoxy resin.
Claim 10
Dependent Claim
22 words
A method as set forth in claim 8 wherein the organopolysiloxane/epoxy resin is cured by a ring-opening addition of said epoxy resin.
Claim 11
Dependent Claim
23 words
A method as set forth in claim 1 wherein the curable material is atomized after being dissolved or dispersed in a liquid medium.
Claim 12
Dependent Claim
40 words
A method as set forth in claim 1 wherein the curable polymer is a mixture of said organopolysiloxane and a monomer, oligomer or polymer of an organic resin, said polymer characterized by curing while copolymerizing to form a block copolymer.
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) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |