Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1997-03-20
1998-05-12
Buttner, David
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
524271, C09J15302, C09J17112, C08L 5302
Patent
active
057506221
ABSTRACT:
The present invention provides high service temperature, low viscosity rubber compounds and hot melt adhesive and/or sealant compositions by combining from 2 to 30% by weight of a polyphenylene ether resin having an I.V. of 0.07 to 0.25 deciliters per gram (dl/g) with from 70 to 98% by weight of an asymmetric radial elastomeric vinyl aromatic hydrocarbon/conjugated diene block copolymer having one of the following formulae: (I) (A--HD).sub.x --Y--(UD).sub.z or (II) (UD--A--HD).sub.x --Y or (III) (UD--A--HD).sub.x --Y--(UD).sub.z wherein A is a vinyl aromatic hydrocarbon block having a weight average molecular weight of from 4000 to 16,000, HD is a hydrogenated conjugated diene block having a weight average molecular weight of from 10,000 to 50,000, Y is a multifunctional coupling agent, UD is a partially hydrogenated conjugated diene block having a weight average molecular weight of from 1000 to 45,000, x is an integer from 2 to 30, z is an integer from 1 to 20, and x+z ranges from 3 to 31. These compositions may be used in adhesive and sealant compositions by adding to them from 20 to 400 parts per 100 parts of copolymer of a tackifying resin.
REFERENCES:
patent: 4104323 (1978-08-01), Hansen
patent: 4141876 (1979-02-01), Hansen
patent: 5118748 (1992-06-01), Fujita et al.
patent: 5229464 (1993-07-01), Erickson et al.
patent: 5393841 (1995-02-01), Himes et al.
International Search Report of 2 Jun. 1997.
Buttner David
Haas Donald F.
Shell Oil Company
LandOfFree
High temperature low viscosity thermoplastic elastomer block cop does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High temperature low viscosity thermoplastic elastomer block cop, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High temperature low viscosity thermoplastic elastomer block cop will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-979821