Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1995-08-29
1997-12-02
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
528 86, 528 88, 528107, 528113, 528118, 528129, 528220, 528228, 528230, 528254, 528264, 528267, 525480, 525489, 525509, 525521, 525534, 525540, 522 6, 522 33, 522 71, C08F28300, C08G 828, C08L 6134
Patent
active
056937253
ABSTRACT:
Novel polymers of general formula: ##STR1## wherein where n is a whole number from 2 to 10; R is a spacing group comprising (a) at least one of m methylene units where m is a whole number from 1 to 20, m' methine units where m' is a whole number from 0 to 20, a mixture of m methylene units and m' methine units where m+m'.ltoreq.20, and units of formula --(CH.sub.2 -CHX-O).sub.m" --, where m" is a whole number from 0 to 200 and X is H, CH.sub.3 or C.sub.2 H.sub.5, or (b) an aromatic ring having one, two or three members; R' is H, an alkyl group having no more than 20 carbon atoms, an aryl group having no more than three rings, or a combination thereof; R" is a group containing at least two active hydrogen atoms and having at least two but no more than 20 carbon atoms; and R'" is a group containing at least two active hydrogen atoms and is selected from the group consisting of alkyl, aryl and mixed alkyl-aryl species having from 1 to 200 carbon atoms; polyalkylene oxides; and urea formaldehyde resin.
REFERENCES:
patent: 4231759 (1980-11-01), Udelhofen et al.
patent: 4396517 (1983-08-01), Gemmill, Jr. et al.
patent: 4561901 (1985-12-01), Schilling
patent: 4912247 (1990-03-01), Roling
patent: 5016495 (1991-05-01), Takizawa
Acquah Samuel A.
Jojani Inc.
Lifesource International, Ltd.
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