Dried porous crumbs of hydrogenated block copolymer

Details Dried porous crumbs of hydrogenated block copolymer Dried porous crumbs of hydrogenated block copolymer

1999-04-28

2009-08-25

Zemel, Irina S (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

C521S064000, C521S142000, C521S146000, C521S148000, C525S098000, C525S316000, C528S480000, C528S500000

Reexamination Certificate

active

07579385

ABSTRACT:
Disclosed are dried porous crumbs of a hydrogenated block copolymer which is obtained by hydrogenating a block copolymer comprising (a) at least one polymer block composed mainly of aromatic vinyl monomer units and (b) at least one polymer block composed mainly of conjugated diene monomer units, and which has a molecular weight of 70,000 or more. The dried porous crumbs have a water content of 1% by weight or less and having the capability of absorbing an oil in an amount of 1.0 or more, in terms of the ratio of the weight of an oil, which is absorbed by the dried porous crumbs when the dried porous crumbs are immersed in the oil at 25° C. under atmospheric pressure for 1 minute, to the weight of the dried porous crumbs. Also disclosed is a method for producing the same. When the dried porous crumbs are used as a modifier in the production of a molding resin composition from a thermoplastic resin and a liquid additive, such as a softening agent or a silicone oil, a shaped article having an excellent appearance can be produced by molding the molding resin composition.

REFERENCES:
patent: 2905658 (1959-09-01), Dietz
patent: 3968003 (1976-07-01), Wolfe
patent: 4423207 (1983-12-01), Flock et al.
patent: 5616652 (1997-04-01), Kusano et al.
patent: 0497411 (1992-08-01), None
patent: 0731111 (1996-09-01), None
patent: 554845 (1993-08-01), None
patent: 713091 (1995-02-01), None
patent: 8301929 (1996-11-01), None
patent: A8301929 (1996-11-01), None
patent: 1017611 (1998-01-01), None
patent: A1017611 (1998-01-01), None
Encyclopedia of Chemical Technology, Centrifugal Separation, John Wiley & Sons, vol. 5, pp. 505-551.
English language abstract of JP 61 108607 A (May 27, 1986).

Affiliated with

Also associated with

Rating

Dried porous crumbs of hydrogenated block copolymer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dried porous crumbs of hydrogenated block copolymer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dried porous crumbs of hydrogenated block copolymer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4095840