Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1987-03-06
1989-05-23
Briggs, Sr., Wilbert J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
71 3, 71 65, 424 78, 525479, 528 26, 528 28, A61K 3174, C08L 8312
Patent
active
048332186
ABSTRACT:
This invention provides compositions which are curable to hydrophilic, water-absorbing silicone-organic copolymer elastomers via free radical polymerization such as by the use of free radical precursors, ultraviolet light or electron beam radiation. The compositions are mixtures of (A) from 50 to 95 parts by weight of block copolymers containing polydiorganosiloxane segments and polyalkyleneoxy segments which block copolymers contain terminal aliphatically unsaturated groups such as those derived from the reaction of isocyanoethyl methacrylate with terminal free hydroxyl groups present on the polyalkyleneoxy segments and the polyalkyleneoxy segments are ultimately attached to the silicon atoms by means of a linkage formed by reaction with a diisocyanate compound and (B) from 5 to 50 parts by weight of at least one substantially water insoluble aliphatically unsaturated organic monomer which is compatible with (A) such as methyl methacrylate. The cured elastomers, some of which are optically clear, are useful as membranes for gas or fluid separations or for the controlled release of bioactive agents such as insecticides, herbicides, or drugs.
REFERENCES:
patent: 3484394 (1969-12-01), Holdstock
patent: 4136250 (1979-01-01), Mueller et al.
patent: 4235985 (1980-11-01), Tanaka et al.
patent: 4260725 (1981-04-01), Keogh et al.
patent: 4309529 (1982-01-01), Wendling
patent: 4320221 (1982-03-01), Hoffman
patent: 4369300 (1983-01-01), Carter et al.
patent: 4486577 (1984-12-01), Mueller et al.
patent: 4543398 (1985-09-01), Bany et al.
patent: 4563539 (1986-01-01), Gornowicz et al.
patent: 4584337 (1986-04-01), Lee et al.
patent: 4600751 (1986-07-01), Lee et al.
patent: 4605712 (1986-08-01), Mueller et al.
Briggs Sr. Wilbert J.
Cornwall Susan M.
Dow Corning Corporation
LandOfFree
Hydrophilic silicone-organic copolymer elastomers containing bio does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydrophilic silicone-organic copolymer elastomers containing bio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrophilic silicone-organic copolymer elastomers containing bio will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1731390