Reaction injection molded elastomer containing an internal mold

Details Reaction injection molded elastomer containing an internal mold Reaction injection molded elastomer containing an internal mold

1982-09-13

1983-12-13

Phynes, Lucille M.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

2643282, 2643286, 264DIG83, 521126, C12P 1316, C12P 1704

Patent

active

044205708

ABSTRACT:
The invention is a method of making a molded reaction injection molded elastomer which will release from its mold with reduced frequency of application of external mold release agents. The reaction injection molded (RIM) elastomer is made by injecting exactly two streams via a RIM machine into a mold cavity of the desired configuration, a formulation comprising in the first stream a high molecular weight polyhydric polyether, a low molecular weight active hydrogen containing compound of at least two functionality and an internal mold release agent, and in the second stream an aromatic polyisocyanate and tin catalyst in an amount equal to 100% of the tin catalyst present in the formulation. The resulting RIM elastomer may be removed from the mold easily. RIM elastomers are useful, for example, for automobile body parts.

REFERENCES:
patent: 3523918 (1970-08-01), Gonzales
patent: 3838076 (1974-09-01), Moss et al.
patent: 4130698 (1978-12-01), Sparrow et al.
patent: 4218543 (1980-08-01), Weber et al.
patent: 4246363 (1981-01-01), Turner et al.
patent: 4254069 (1981-03-01), Dominguez et al.
patent: 4269945 (1981-05-01), Vanderhider et al.
patent: 4272618 (1981-06-01), Dominguez et al.
patent: 4273885 (1981-06-01), Dominguez et al.
patent: 4281096 (1981-07-01), Nomura et al.
patent: 4314962 (1982-02-01), Wollensak et al.
patent: 4314963 (1982-02-01), Boden et al.
patent: 4374210 (1983-02-01), Ewen et al.
Amine Modified Polyols in Reinforced Polyurethane RIM Elastomers, Cornell, et al., SPI, 1482, Session 5A.
Dow-Corning--New Product Information--Dow-Corning.RTM. Q2-7119 Fluid for RIM Internal Release.

Affiliated with

Also associated with

Rating

Reaction injection molded elastomer containing an internal mold does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reaction injection molded elastomer containing an internal mold , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reaction injection molded elastomer containing an internal mold will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-804657