Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1986-12-31
1988-10-04
Short, Patricia
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 44, 525 92, 525112, 525122, 525171, 525531, 525 63, C08L 6706, C08L 6310
Patent
active
047757183
ABSTRACT:
An elastomeric homopolymer or copolymer is reacted with or, in effect, grafted onto an unsaturated polyester and the reaction product or graft polymer may then be used in a thermosetting unsaturated polyester resin composition. The chemical linkage between the elastomeric polymer and the unsaturated polyester is a cyclic structure comprising 6 carbon atoms. The chemical bond is achieved by first treating the elastomeric polymer to incorporate a conjugated diolefin structure and then adding the conjugated diolefin group to an ethylenically unsaturated group in the polyester or a monomeric dienophile. When added to a monomeric dienophile, the polyester is then grafted onto the elastomeric polymer at the site of the monomeric dienophile. The chemical linkage or bonding occurs through a 4+2 Diels Alder addition. The reaction or grafting effectively incorporates an elastomer segment into the thermosetting polyester resin composition and imparts improved surface characteristics and impact resistance without risk of destructive phase separation which has, heretofore, occurred when thermoplastic elastomers were incorporated into thermosetting polyester resin compositions.
REFERENCES:
patent: 3004003 (1961-10-01), Batzer
patent: 3078253 (1963-02-01), Davies
patent: 3179623 (1965-04-01), Bowen
patent: 3231635 (1966-01-01), Holden et al.
patent: 3256266 (1966-06-01), Burt
patent: 3301743 (1967-01-01), Fekete et al.
patent: 3317465 (1967-05-01), Doyle et al.
patent: 3367992 (1968-02-01), Bearden
patent: 3377406 (1968-04-01), Newey et al.
patent: 3489707 (1970-01-01), Fry
patent: 3705208 (1972-12-01), Nakamuta
patent: 3892819 (1975-07-01), Najvar
patent: 3925299 (1975-12-01), Phillips
patent: 3925300 (1975-12-01), Roberts et al.
patent: 4238202 (1980-12-01), Trepka et al.
patent: 4465808 (1984-08-01), Dix
Shell Oil Company
Short Patricia
LandOfFree
Modified polyester, methods of preparing same and compositions c does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Modified polyester, methods of preparing same and compositions c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modified polyester, methods of preparing same and compositions c will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2156836