Pulverulent, non-tacky, free-flowing filled rubber base...

C - Chemistry – Metallurgy – 03 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

400/9065, 400/91

C03C 1/00 (2006.01) C08J 3/14 (2006.01) C08J 3/215 (2006.01) C08K 3/34 (2006.01)

Patent

CA 1057881

ABSTRACT A process for the manufacture of a pulverulent, non-tacky, free- flowing filled rubber base mixture which comprises mixing a rubber latex or an aqueous stable emulsion of a rubber solution with less than the envisaged total amount of solid filler in the form of an aqueous dispersion or suspen- sion thereof to give a stable, homogeneous mixture; feeding the stable, homogeneous mixture to a multi-stage precipitation pro- cess by (1) mixing the stable, homogeneous mixture into water containing a precipi- tant and a sodium silicate whereupon the rubber and filler conjointly pre- cipitate as a rubber premix, and distilling off rubber solvent which may be present, (ii) adjusting the aqueous suspension of the rubber premix, thus obtained to a pH value of 4.0 to 9.0 for the precipitation of dissolved silica in the presence of a silica precipitant and (iii) mixing the suspension, thus obtained, of rubber premix and precipi- tated silica with the remainder of the envisaged total amount of solid filler in the form of an aqueous suspension; separating the precipitated material plus filler together constituting the filled rubber base mixture from the water; and drying the rubber base mixture with constant agitation. The rub- ber base mixtures of this invention find many uses, in particular the manu- facture of extended products.

233548

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Pulverulent, non-tacky, free-flowing filled rubber base... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pulverulent, non-tacky, free-flowing filled rubber base..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulverulent, non-tacky, free-flowing filled rubber base... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-417645

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.