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US4818614A Expired / Lapsed US ⏱️ 0.0 years remaining

Modified powder

Assignee: Shiseido Co Ltd
•
Filing: 1986-07-25
•
Granted: 1989-04-04
•
Expires: 2006-07-25
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Abstract

Abstract A modified powder or particulate material coated on substantially the entire surface thereof with a film of a silicone polymer carrying a pendant group thereon, this powder or particulate material being produced by a process comprising the steps of (a) coating the powder or particulate material with a film of a silicone polymer having at least one Si-H moiety, and (b) carrying out an addition reaction of a compound capable of reacting with an Si--H moiety to the Si--H moiety in the silicone polymer of step (a), whereby the pendant group derived from said compound is bonded to the silicone polymer.

Inventors

  • 👤 Hiroshi Fukui
  • 👤 Ryujiro Namba
  • 👤 Tsutomu Saito
  • 👤 Yutaka Ohtsu
  • 👤 Asa Kimura
  • 👤 Motokiyo Nakano
  • 👤 Okitsugu Nakata
  • 👤 Kenichi Tomita
  • 👤 Kazuo Tokubo
  • 👤 Kazuhisa Ohno
  • 👤 Toshio Yoneyama
  • 👤 Takashi Ogawa
  • 👤 Hideo Morohoshi
  • 👤 Junichi Koyama
  • 👤 Taketoshi Kanda
  • 👤 Kunihiro Kawaguchi
  • 👤 Yuzo Shimizu

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 17:15
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/11; A61K8/18; A61K8/19; A61K8/25; A61K8/26; A61K8/29; A61K8/30; A61K8/58; A61K8/585; A61K8/72; A61K8/84; A61K8/89; A61K8/891; A61Q; A61Q1/00; A61Q1/02; A61Q1/04; A61Q1/06; A61Q1/10; A61Q1/12; A61Q17/00; A61Q17/04; A61Q3/00; A61Q3/02; C; C01; C01B; C01B13/00; C01B13/14; C01B13/145; C01B32/00; C01B32/30; C01B32/354; C01B32/372; C01B39/00; C01B39/02; C01B39/026; C09; C09B; C09B67/00; C09B67/0001; C09B67/0004; C09B67/0008; C09B67/0013; C09C; C09C3/00; C09C3/12; G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/712; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412; C01P; C01P2002/00; C01P2002/70; C01P2002/72; C01P2002/80; C01P2002/82; C01P2002/87; C01P2004/00; C01P2004/01; C01P2004/03; C01P2006/00; C01P2006/60; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2995; Y10T428/2998

Claims Analysis

Total Claims: 33
Claim 1
Independent Claim 123 words
A modified powder coated on substantially the entire surface thereof with a film of a silicone polymer carrying a pendant group on one side thereof opposite the other side which is in contact with the surface of said powder, said powder being produced by a process comprising the steps of (a) coating the powder with a film of a silicone polymer having at least one Si--H moiety, and (b) carrying out an addition reaction of a compound capable of reacting with an Si--H moiety, to the Si--H moiety in the outer surface of the film of the silicone polymer of step (a), whereby the pendant group derived from said compound is bonded to the outer surface of the film of the silicone polymer.
Claim 2
Dependent Claim 123 words
A modified powder coated on substantially the entire surface thereof with a film of a silicone polymer carrying a pendant group on one side thereof opposite the other side which is in contact with the surface of said powder, said powder being produced by a process comprising the steps of (a) coating the powder with a film of a silicone polymer having at least one Si--H moiety, and (b) carrying out an addition reaction of a compound capable of reacting with an Si--H moiety, to the Si--H moiety in the outer surface of the film of the silicone polymer of step (a), whereby the pendant group derived from said compound is bonded to the outer surface of the film of the silicone polymer.
Claim 3
Dependent Claim 33 words
A modified powder or particulate material as claimed in claim 1, wherein said film of said silicone polymer of step (a) is derived from a silicone compound having at least one Si--H moiety.
Claim 4
Dependent Claim 166 words
A modified powder as claimed in claim 2, wherein the silicone compound used in step (a) is a silicone compound having a general formula (I): (R.sup.1 HSiO).sub.a (R.sup.2 R.sup.3 SiO).sub.b (R.sup.4 R.sup.5 R.sup.6 SiO.sub.1/2).sub.c (I) wherein R 1 , R 2 , and R 3 represent, independently, hydrogen or a hydrocarbon residue having 1 to 10 carbon atoms, which may be substituted with at least one halogen atom, provided that R 1 , R 2 , and R 3 are not hydrogen at the same time, R 4 , R 5 , and R 6 represent, independently, hydrogen or a hydrocarbon residue having 1 to 10 carbon atoms, which may be substituted with at least one halogen atom, a is zero or an integer of 1 or more, b is zero or an integer of 1 or more, and c is zero or 2, provided that a+b is an integer of 3 or more when c is zero, and the maximum value of a+b+c is 10,000.
Claim 5
Dependent Claim 66 words
A modified powder as claimed in claim 2, wherein the silicon compound is brought into contact with the powder having an active site on the surface thereof, said active site capable of catalytically polymerizing a silicon compound having a siloxane bond or a hydrosilyl moiety, whereby the silicone compound is polymerized on substantially the entire surface of the powder to form said film of silicone polymer.
Claim 6
Dependent Claim 28 words
A modified powder as claimed in claim 4, wherein the silicone compound in the form of a vapor is brought into contact with the powder or particulate material.
Claim 7
Dependent Claim 25 words
A modified powder as claimed in claim 4, wherein the silicone polymer formed in step (a) has a weight-average molecular weight of more than 200,000.
Claim 8
Dependent Claim 58 words
A modified powder as claimed in claim 5, wherein, in step (a), the silicone compound is brought into contact with the powder or particulate material at a temperature of 120° C. or less in a closed chamber in such a manner that the vaporized silicone compound is deposited under a molecular state on the surface of the powder.
Claim 9
Dependent Claim 27 words
A modified powder as claimed in claim 7, wherein the silicone compound is brought into contact with the powder under a pressure of 200 mmHg or less.
Claim 10
Dependent Claim 35 words
A modified powder as claimed in claim 5, wherein, in step (a), the silicone compound is brought into contact with the powder by feeding a gas mixture of the silicone compound and a carrier gas.
Claim 11
Dependent Claim 27 words
A modified powder as claimed in claim 9, wherein the silicone compound is brought into contact with the powder at a temperature of 120° C. or less.
Claim 12
Dependent Claim 27 words
A modified powder as claimed in claim 2, wherein, in step (a), the silicone compound is dissolved in a solvent and brought into contact with the powder.
Claim 13
Dependent Claim 31 words
A modified powder as claimed in claim 2, wherein, in step (a), the silicone compound in the form of a liquid is brought into contact with the powder or particulate material.
Claim 14
Dependent Claim 14 words
A modified powder as claimed in claim 12, wherein the contact is mechanochemically effected.
Claim 15
Dependent Claim 45 words
A modified powder as claimed in claim 1, wherein, in step (a), the powder or particulate material is coated with said film of silicone polymer having Si--H moieties in an amount of 1% or more of the total Si atoms contained in the silicone polymer.
Claim 16
Dependent Claim 30 words
A modified powder as claimed in claim 1, wherein said compound used in step (b) is an unsaturated hydrocarbon compound or a compound having an OH group or SH group.
Claim 17
Dependent Claim 89 words
A modified powder as claimed in claim 15, wherein the unsaturated hydrocarbon compound is a compound having the general formula (V): ##STR19## wherein R 11 , R 12 , R 13 , and R 14 represent, independently, hydrogen, halogen, hydroxyl, mercapto, acyloxy, alkoxy, amino, nitro, carboxyl, sulfo, or an unsubstituted or substituted hydrocarbon residue having 1 to 30 carbon atoms, or R 11 and R 13 may represent a single bond to thereby from --C.tbd.C--, or R 12 and R 14 may form, together with --C═C--, an alicyclic ring.
Claim 18
Dependent Claim 15 words
A modified powder as claimed in claim 1, wherein said material is an inorganic pigment.
Claim 19
Dependent Claim 17 words
A modified powder as claimed in claim 1, wherein said material is a metallic oxide or hyroxide.
Claim 20
Dependent Claim 14 words
A modified powder as claimed in claim 1, wherein said material is a mica.
Claim 21
Dependent Claim 15 words
A modified powder as claimed in claim 1, wherein said material is an organic pigment.
Claim 22
Dependent Claim 15 words
A modified powder as claimed in claim 1, wherein said material is a pearling pigment.
Claim 23
Dependent Claim 15 words
A modified powder as claimed in claim 1, wherein said material is a mineral silicate.
Claim 24
Dependent Claim 15 words
A modified powder as claimed in claim 1, wherein said material is a porous material.
Claim 25
Dependent Claim 14 words
A modified powder as claimed in claim 1, wherein said material is a carbon.
Claim 26
Dependent Claim 14 words
A modified powder as claimed in claim 1, wherein said material is a metal.
Claim 27
Dependent Claim 17 words
A modified powder as claimed in claim 1, wherein said material is a composite powder or particulate.
Claim 28
Dependent Claim 14 words
A modified powder as claimed in claim 1, wherein said powder is a biopolymer.
Claim 29
Dependent Claim 10 words
A cosmetic composition comprising a modified powder of claim 1.
Claim 30
Dependent Claim 10 words
A coating composition comprising a modified powder of claim 1.
Claim 31
Dependent Claim 66 words
A modified powder as claimed in claim 3, wherein the silicone compound is brought into contact with the powder having an active site on the surface thereof, said active site capable of catalytically polymerizing a silicone compound having a siloxane bond or a hydroxysilyl moiety, whereby the silicone compound is polymerized on substantially the entire surface of the powder to form said film of silicone polymer.
Claim 32
Dependent Claim 28 words
A modified powder as claimed in claim 30, wherein the silicone compound in the form of a vapor is brought into contact with the powder or particulate material.
Claim 33
Dependent Claim 47 words
A modified powder as claimed in claim 31, wherein the silicone compound used in step (a) is a cyclic silicone compound having the general formula (I) in which a+b is 3 to 7 and c is zero, provided that the compound has at least two Si--H moieties.

References Cited (Backward Citations)

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US3920865A Cited
US3849152A Cited
US4034139A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-04-03 1992-10-03 1993-04-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-04-03 1996-10-03 1997-04-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-04-03 2000-10-03 2001-04-04 $7700.00 Window Closed / Lapsed

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