Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1995-12-14
1997-11-11
Gorr, Rachel
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524774, 524775, 528 265, 528 28, 528 78, 4284256, 264 465, 521110, 521112, C08G 1850
Patent
active
056865260
ABSTRACT:
The invention provides polyurethane components and compositions capable of providing internal mold release properties in SRIM applications. The polyol composition of the invention has an isocyanate reactive polyol (A) having a number average molecular weight from 100 to about 10,000 and an effective amount of internal mold release composition (B) having a silicon-containing polymer (a) and an at least diester functional compound (b) which is the reaction product of (i) an aromatic carboxylic acid, and (ii) alcohols having from 2 to 30 carbons. The invention further provides an SRIM polyurethane composition useful in the preparation of molded polyurethane articles having internal mold release properties, the composition comprising an isocyanate component (I) and the isocyanate reactive polyol composition (component (II)) disclosed above. In another aspect of the invention, the invention provides methods of using the claimed compositions as well as the rigid cellular polyurethane SRIM articles resulting from such processes.
REFERENCES:
patent: 3772222 (1973-11-01), Steward et al.
patent: 3875069 (1975-04-01), Worschech et al.
patent: 4052495 (1977-10-01), Uhlmann et al.
patent: 4076660 (1978-02-01), Olstowski et al.
patent: 4111861 (1978-09-01), Godlewski
patent: 4457887 (1984-07-01), Porsche
patent: 4477366 (1984-10-01), Robertson
patent: 4498929 (1985-02-01), Robertson
patent: 4499254 (1985-02-01), Dominguez et al.
patent: 4504314 (1985-03-01), Barker et al.
patent: 4546145 (1985-10-01), Robertson
patent: 4562290 (1985-12-01), Korczak
patent: 4681926 (1987-07-01), Goel
patent: 4708971 (1987-11-01), Goel et al.
patent: 4722946 (1988-02-01), Hostettler
patent: 4769174 (1988-09-01), Kilgour
patent: 4769204 (1988-09-01), Oba et al.
patent: 5073576 (1991-12-01), Kuyzin
patent: 5389696 (1995-02-01), Dempsey et al.
BASF Corporation
Borrego Fernando A.
Gorr Rachel
LandOfFree
Process of making molded polyurethane articles does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process of making molded polyurethane articles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of making molded polyurethane articles will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1229908