Patent US646741A successfully refreshed from Google Patents.
Patent EP0229750A2 successfully refreshed from Google Patents.
Patent EP0213931A2 successfully refreshed from Google Patents.
EP0213931A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Inorganic fillers
Assignee: Imerys Minerals Ltd
•
Filing: 1986-08-27
•
Granted: —
•
Expires: 2006-08-27
Abstract
Abstract A process for preparing an inorganic filler comprising treating a particulate inorganic material with a natural or synthetic latex composition and dewatering and drying the resultant mixture. The surface-treated inorganic filler can be used with advantage in a polymeric resin composition.
Inventors
- 👤 David George Jeffs
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 14:05
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/10; C08; C08K; C08K9/00; C08K9/04; C08K3/00; C08K3/34; C08K9/08; C01; C01P; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/51; C01P2004/60; C01P2004/61; C01P2004/80; C01P2006/00; C01P2006/20; C01P2006/60; C01P2006/90; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
28 words
A process for preparing an inorganic filler which comprises treating a particulate inorganic material with a natural or synthetic latex composition and dewatering and drying the resultant mixture.
Claim 2
Dependent Claim
28 words
A process for preparing an inorganic filler which comprises treating a particulate inorganic material with a natural or synthetic latex composition and dewatering and drying the resultant mixture.
Claim 3
Dependent Claim
29 words
A process according to claim 1, characterised in that the particulate inorganic material is a kaolinitic clay, a calcined kaolinitic clay, a calcium carbonate, wollastonite, bauxite, talc or mica.
Claim 4
Dependent Claim
24 words
A process according to claim 1 or 2, characterised in that substantially all the particles in the inorganic material are not larger than 0.100mm.
Claim 5
Dependent Claim
42 words
A process according to claim 1, 2 or 3, characterised in tha the latex solids are formed from a natural rubber or a natural rubber which has been substituted with functional groups or a styrene butadiene rubber (SBR) or a poly(vinyl acetate).
Claim 6
Dependent Claim
96 words
A process according to claim 1, 2, 3 or 4, characterised in that an aqueous suspension containing from 5% to 50% by weight of the inorganic material is mixed with a natural or synthetic latex composition containing from about 40% to about 60% by weight of solids, a water-soluble salt having a multi-valent cation is added to the resulting mixture, the pH of the resulting mixture is adjusted to a value greater than 4.0 to form floccs, the mixture containing the flocculated material is dewatered, and the dewatered solids are dried to a substantially bone-dry state.
Claim 7
Dependent Claim
46 words
A process according to any one of claims 1 to 5, characterised in that the amount of the natural or synthetic latex composition added is such as to provide from 1% to 10% by weight of latex solids, based on the weight of dry inorganic material.
Claim 8
Dependent Claim
22 words
A polymeric resin composition which includes an inorganic filler prepared by the process claimed in any one of claims 1 to 7.
Claim 9
Dependent Claim
17 words
A polymeric resin composition as claimed in claim 8, wherein the polymeric resin is a thermosetting resin.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.